欧美激情一区二区三区|欧美日本一区二区视频在线观看|91福利国产在线在线播放|?v天堂最新一区二区三区|中文字幕不卡在线一区二区|国产欧美日本在线观看|最新精品国偷自产在线|欧美专区在线

2022

2022

  • Record 325 of

    Title:Picosecond Pulsed Laser Deposition Technique to Fabricate Zinc-Oxide Thin Films Through Burst Mode
    Author(s):Wu, Enli(1,2); Dai, Shoujun(1,2,3); Xuan, Xinxiang(4); He, Jianguo(1,2,3); Liu, Yang(1,2,3); Tan, Yu(5); Mo, Zeqiang(1,2,3); Yu, Jin(1,2)
    Source: Zhongguo Jiguang/Chinese Journal of Lasers  Volume: 49  Issue: 6  DOI: 10.3788/CJL202249.0603003  Published: March 25, 2022  
    Abstract:Objective Pulsed laser deposition (PLD) is a technique, for removing material from the surface of a target that uses laser energy pulses. It has several advantages over other depositions methods, including high particle energy to form film, fast deposition rate, and no restriction on the target materials. PLD technology has advanced rapidly in recent years, and it is now widely used in the production of metals, ceramics, transparent electrodes, and high-temperature superconducting films. For traditional PLD technology, nanosecond single-pulse lasers are commonly used as excitation sources. One disadvantage of using nanosecond pulsed laser is the possibility of selective ablation, which could result in a lack of stoichiometry during the process. This is a critical challenge that nanosecond PLD (ns-PLD) technologies for scientific research and industrial applications. With the increasing availability of commercial ultrashort laser sources, in recent years, and its distinct advantage of efficient laser ablation, the ultrashort pulse PLD is gaining popularity as a method for producing thin films. Ultrashort pulse PLD demonstrates its potential capacity to control the emission of droplets due to the diverse ablation mechanisms, even though it may not be the ultimate solution in smooth film deposition. Furthermore, the pulse sequence presented in this article has the potential to change the laser-matter interaction, which can be used to improve the deposit' s surface quality and optical properties. Methods A method for pulsed deposition of picosecond laser based on different pulse burst modes is presented, consisting of four main components: seed oscillator, pulse selector, laser amplifier, and power controller (Fig. 1). The laser burst mode is set from 1 to 4 (Fig. 2) with a 532 nm output wavelength, 100 kHz laser frequency, 33.3 ns intrapulse interval, and 10 ;is interpulse string interval. Zinc oxide (ZnO) transparent conductive thin films are deposited on glass substrates and single-crystal silicon substrates via the proposed method. The effect of different pulse burst modes on the crystal structure, surface morphology, and optical properties of the ZnO film is studied thoroughly using spectroscopic ellipsometry, atomic force microscopy, X-ray diffractometry, ultraviolet-visible spectrophotometry, and scanning electron microscopy. Results and Discussions We obtain film thickness (Fig. 3), refractive index, and extinction coefficient data (Table 1) created for various burst modes (from 1 to 4) and discover that the deposition rate decreases and are accompanied by an increase in refractive index as the number of burst modes increases. To begin, the intrapulse period in multipulse mode is set to 33.3 ns and the average plasma velocity is around 104 cm/s. Therefore, using a burst mode of 4, the plasma in the multipulse mode is not completely disengaged from the target when the last pulse is incident, resulting in laser-plasma contact and partial absorption of the pulsed laser energy by the plasma, and limiting target material extraction. Furthermore, the energy distribution of laser pulses is related to the fact that the first pulse energy gradually decreases as the multipulse burst mode increases in size, reducing the first energy interaction between the laser and the target. The roughness diminishes as the multipulse burst mode is increased (Fig. 4). As the laser-plasma interaction is strengthen, the plasma's kinetic energy increases, resulting in longer plasma lifetimes, longer diffusion durations on the substrate, and eventually favoring the orderly formation of thin films. In the single-pulse mode of laser deposition, large particles and droplets are present; however, the laser-plasma interaction in the multipulse mode can further heat up and break down the large particles in the plasma, resulting in fewer large particles on the film surface and smoother, denser films (Figs. 5 and 6). The crystal structure of the prepared films is examined using XRD (Fig. 7) and the crystal structure data for different pulse burst modes (from 1 to 4) are compared, as shown in Table 1, and it is discovered that the different pulse burst mode does not affect the crystal structure. However, when the pulse burst mode is 4, it has some subtle effects on the crystal size, diffraction peak angle, and film intensity, with larger crystal size and better film quality. The transmittance curves of the films deposited in various pulse burst modes are determined (Fig. 8), In the visible range (380-800 nm), the average transmittances of the films are 90. 31%, 92. 72%, 93. 98%, and 94. 81%, respectively. The optical band gaps (Fig.9) are 3.317, 3.343, 3.362, and 3.427 eV, which are comparable to the normal ZnO bandgap (3.3 eV), which corresponds to the tendency of the central wavelength of the absorption edge in the transmittance curve to move in the direction of short wave. Finally, we calculate resistivity curves for the deposited films under various pulse burst modes (Fig. 10) and discover that the film resistivity is lowest when the pulse burst mode is 4. Conclusions The high-quality ZnO films are deposited on glass and silicon substrates using a laser deposition process in different burst modes, with the number of subpulses in each burst increasing from 1 to 4. The effects of different burst modes of picosecond lasers on the film thickness, roughness, surface topography, crystal structure, optical properties, and electrical properties of ZnO films are investigated. When the pulse burst mode is set to 4, the film surface has less roughness, smaller particle size, higher transmittance, better crystalline quality, and lower resistivity when compared with other burst modes. This is extremely important for relevant optical applications to the production of ZnO thin film. ? 2022 Science Press. All rights reserved.
    Accession Number: 20224513088976
  • Record 326 of

    Title:Design and Optimization of Image Slicer in Coherent Dispersive Spectrometer
    Author(s):Wang, Yidong(1,2); Wei, Ruyi(1,2,3,4); Xie, Zhengmao(1); Zhang, Kai(5); Chen, Shasha(1)
    Source: Guangzi Xuebao/Acta Photonica Sinica  Volume: 51  Issue: 9  DOI: 10.3788/gzxb20225109.0922002  Published: September 2022  
    Abstract:Image slicer is an important optical device in astronomical observation spectrometer. It can effectively improve the resolution and energy transmittance of the instrument. The image slicer can divide the circular image spot into strips and arrange the strips in a straight line, so that all the image spots can pass through the spectrometer slit. Image slicers are commonly used in astronomical observation spectrometers to help instruments achieve high spectral resolution with medium apertures. Image slicers can be divided into 4 categories according to their working principles. Among them, Bowen-Walraven type is the most widely used image slicer type. Coherent dispersive spectroscopy is a technique that combines an interferometer and an intermediate resolution spectrometer. It measures the phase change of the interference fringes of the stellar spectral lines after the Doppler frequency shift, and calculates the radial velocity change of the star and the mass of the planet. Since the phase difference has a certain amplification factor relative to the wavelength offset, when the spectral resolution is the same, the radial velocity detection accuracy of the coherent dispersion technique can be greatly improved compared with the traditional echelle grating method.This paper is based on the coherent dispersive spectrometer used to detect exoplanets by the radial velocity method. The radial velocity detection accuracy is expected to be less than 1 m/s, and the detection target is K/M dwarf stars. The structure of the coherent dispersion spectrometer consists of collimating mirror, Sagnac interferometer, imaging mirror group, image slicer, relay mirror group, slit, dispersion grating and CCD. The working spectral range of the spectrometer is 660~900 nm, the system transmittance at the center wavelength is about 0.4, and the spectral resolution is 0.03 nm. In order to meet the requirements of energy utilization and spectral resolution, the system needs to use the image slicer to realize the target surface multiplexing of the CCD and the reasonable matching of the numerical aperture. Therefore, setting a reasonable number of segmented images and the F number of the imaging lens group to achieve a good segmentation effect is of great significance to the improvement of system performance.In order to reduce the influence of imaging defects on the system, two design schemes of the image slicer are modeled and calculated in this paper. This paper also studies the relationship between the thickness of the reflective cavity and the incident angle and the defocusing and object point repetition, and deduces the general design formula of the thickness of the optical reflective cavity, which provides an important reference for the design of the image slicer. In addition, for the coherent dispersive spectrometer system used for exoplanet detection, this paper simulates the defocus and object point repetition under different F numbers and segmentation numbers. By analyzing the simulation results, the following conclusions are obtained: 1) With the increase of the F number and the number of divisions, the defocus amount increases significantly, and the defocus phenomenon becomes more obvious. 2) The phenomenon of object point repetition appears in all simulation results, which is determined by the design principle and cannot be avoided. 3) The design results of the two design schemes are relatively similar. Since the optical path in the Bowen?Walraven type design is propagated through the glass medium, the defocus amount is larger than that of the simplified type. The ratio of the diffuse spot diameter to the image spot diameter is the same for both methods. Based on the comprehensive simulation effect, and considering the requirements of the coherent dispersion spectrometer system, it can be considered that the imaging defects are relatively balanced and the energy loss is less when the star image is divided into 4 under the condition of F/24, which is a relatively suitable solution. In addition, since the defocus amount of the simplified type is smaller, and only the flat mirror needs to be processed, the cost is lower, so the simplified design scheme can be adopted.The work of this paper plays an important role in achieving the expected performance of the instrument, and provides a reference and application reference for other high-resolution spectrometers to determine system parameters. At the same time, the work of this paper provides a general design idea for Bowen?Walraven and simplified image slicer design, which is instructive for optimizing the design process of image slicer. ? 2022 Chinese Optical Society. All rights reserved.
    Accession Number: 20224413024351
  • Record 327 of

    Title:An end-to-end laser-induced damage change detection approach for optical elements via siamese network and multi-layer perceptrons
    Author(s):Kou, Jingwei(1,2); Zhan, Tao(3); Wang, Li(2); Xie, Yu(4); Zhang, Yihui(2); Zhou, Deyun(1); Gong, Maoguo(5)
    Source: Optics Express  Volume: 30  Issue: 13  DOI: 10.1364/OE.460417  Published: June 20, 2022  
    Abstract:With the presence of complex background noise, parasitic light, and dust attachment, it is still a challenging issue to perform high-precision laser-induced damage change detection of optical elements in the captured optical images. For resolving this problem, this paper presents an end-to-end damage change detection model based on siamese network and multi-layer perceptrons (SiamMLP). Firstly, representative features of bi-temporal damage images are efficiently extracted by the cascaded multi-layer perceptron modules in the siamese network. After that, the extracted features are concatenated and then classified into changed and unchanged classes. Due to its concise architecture and strong feature representation ability, the proposed method obtains excellent damage change detection results efficiently and effectively. To address the unbalanced distribution of hard and easy samples, a novel metric called hard metric is introduced in this paper for quantitatively evaluating the classification difficulty degree of the samples. The hard metric assigns a classification difficulty for each individual sample to precisely adjust the loss assigned to the sample. In the training stage, a novel hard loss is presented to train the proposed model. Cooperating with the hard metric, the hard loss can up-weight the loss of hard samples and down-weight the loss of easy samples, which results in a more powerful online hard sample mining ability of the proposed model. The experimental results on two real datasets validate the effectiveness and superiority of the proposed method. ? 2022 Optica Publishing Group
    Accession Number: 20222512252426
  • Record 328 of

    Title:Laser Cavity-Solitons and Turing Patterns Microcombs: the Interaction of Slow and Fast Nonlinearities
    Author(s):Pasquazi, Alessia(1); Rowley, Maxwell(1); Hanzard, Pierre Henry(1); Cutrona, Antonio(1); Chu, Sai T.(2); Little, Brent E.(3); Morandotti, Roberto(4,5); Moss, David J.(6); Gongora, Juan Sebastian Totero(1); Peccianti, Marco(1)
    Source: 2022 Conference on Lasers and Electro-Optics, CLEO 2022 - Proceedings  Volume:   Issue:   DOI:   Published: 2022  
    Abstract:Slow nonlinearities are critical in microresonator-based frequency combs, regulating essential phenomena, from stability to soliton starting and formation. We discuss their effect in a microresonator-filtered fiber laser. ? Optica Publishing Group 2022, ? 2022 The Author(s)
    Accession Number: 20224212987047
  • Record 329 of

    Title:Versatile, high bandwidth, RF and microwave photonic Hilbert transformers based on Kerr micro-combs
    Author(s):Li, Yang(1); Tan, Mengxi(2); Wu, Jiayang(1); Xu, Xingyuan(3); Sun, Yang(1); Boes, Andreas(2); Corcoran, Bill(4); Nguyen, Thach G.(2); Chu, Sai T.(5); Little, Brent E.(6); Morandotti, Roberto(7); Mitchell, Arnan(2); Moss, David J.(1)
    Source: Proceedings of SPIE - The International Society for Optical Engineering  Volume: 12004  Issue:   DOI: 10.1117/12.2607903  Published: 2022  
    Abstract:We experimentally demonstrate bandwidth-tunable RF photonic Hilbert transformer based on an integrated Kerr microcomb source. The micro-comb is generated by an integrated micro-ring resonator with a free spectral range of 48.9 GHz, yielding 75 micro-comb lines in the telecom C-band. By programming and shaping the generated comb lines according to calculated tap weights, we demonstrate high-speed Hilbert transform functions with tunable bandwidths ranging from 1.2 GHz to 15.3 GHz, switchable center frequencies from baseband to 9.5 GHz, and arbitrary fractional orders. The experimental results show good agreement with theory and confirm the effectiveness of our approach. ? 2022 SPIE.
    Accession Number: 20222312194149
  • Record 330 of

    Title:Modified active disturbance rejection control scheme with sliding mode compensation for airborne star tracker driven by Permanent Magnet Synchronous Motor
    Author(s):Wang, Fan(1,3,5); Cheng, Tianji(1,2,4); Zhu, Hua(1,2,4); Liu, Zhiwen(1,2,4); Han, Chongyang(1,2,4); Wang, Ranjun(1,4); Liu, Enhai(1,4)
    Source: Control Engineering Practice  Volume: 127  Issue:   DOI: 10.1016/j.conengprac.2022.105267  Published: October 2022  
    Abstract:For an airborne star tracker, pointing and switching the target stars with high precision and fast response is necessary for the star observation. However, under airborne circumstances, the control performance of star tracker will be deteriorated by multiple types of disturbance. Therefore, the disturbance suppression is indispensable. In this paper, a high-precision position control scheme for a Permanent Magnet Synchronous Motor (PMSM) driven airborne star tracker is presented based on active disturbance rejection control (ADRC) to overcome the disturbance and improve the robustness of the system. Firstly, to reduce the disturbance estimation error, a modified extended state observer (MESO) with predictive factor is proposed. The stability analysis verifies its feasibility based on input to state stability (ISS) framework and parameter tuning method of MESO via frequency domain analysis is also given. Secondly, aiming at the problem of insufficient disturbance compensation ability of classical ADRC because of the estimation error in control gain and of chattering phenomenon in the conventional sliding mode control, a chattering-reduced sliding mode (SM) component is added to the state error feedback. It is proved that the SM component can make the system reach the sliding surface in limited time via Lyapunov theory and the closed loop stability of the controller can also be ensured. Finally, comparative simulations and experiments are conducted to verify the effectiveness of the proposed control scheme. The simulations show the superiorities of the proposed methods in anti-disturbance capability and robustness. The experimental results testify to the feasibility and better performance of the proposed methods in practical applications of star tracker. ? 2022 Elsevier Ltd
    Accession Number: 20223112457238
  • Record 331 of

    Title:Enhanced Photoluminescence of Monolayer MoSe2 in a Double Resonant Plasmonic Nanocavity with Fano Resonance and Mode Matching
    Author(s):Li, Chenyang(1); Wang, Qifa(1); Diao, Hang(1); Hao, Zhen(1); Yu, Weixing(2); Liu, Kaihui(3); Gan, Xuetao(1); Xiao, Fajun(1); Zhao, Jianlin(1)
    Source: Laser and Photonics Reviews  Volume: 16  Issue: 2  DOI: 10.1002/lpor.202100199  Published: February 2022  
    Abstract:Two-dimensional transition metal dichalcogenides exhibit remarkable optical properties. However, their applications in electronics and photonics are severely limited by the intrinsically low absorption and emission rates. Here, the photoluminescence (PL) enhancement by integrating the monolayer MoSe2 into an Ag nanowire-on-mirror (NWoM) nanocavity is reported. From the dark-field scattering spectrum, a Fano resonance resulting from the coupling between discrete exciton state of MoSe2 and broad plasmon mode of nanocavity is observed. This Fano resonance, as a characteristic of intermediate plasmon–exciton coupling, shows remarkable ability to accelerate emission rate of MoSe2. Furthermore, the nanocavity with multiple resonances provides an excellent spatial mode overlap at excitation and emission wavelengths that affords the intriguing opportunity to resonantly enhance the absorption and PL quantum yield at the same location. The combination of Fano resonance and mode matching allows the attainment of over 1800-fold PL enhancement. These results provide a facile way to enhance the PL intensity of monolayer MoSe2 that may facilitate highly efficient optoelectronic devices. ? 2021 Wiley-VCH GmbH
    Accession Number: 20215011328383
  • Record 332 of

    Title:Large Dispersion-Managed Broadband High-Energy Fiber Femtosecond Laser System with Sub 300 Fs Pulses and High Beam Quality Output
    Author(s):Li, Feng(1); Zhao, Wei(1); Wang, Yishan(1); Li, Dongjuan(1); Li, Qianglong(1); Yang, Yang(1); Wen, Wenlong(1); Song, Dongdong(1)
    Source: SSRN  Volume:   Issue:   DOI: 10.2139/ssrn.4094138  Published: April 26, 2022  
    Abstract:We experimentally demonstrate a high-energy sub 300 fs polarization maintaining fiber chirped pulse amplification (CPA) system. The preamplifier is a monolithic fiberized system that uses two cascaded temperature-assisted dispersion-tuning broadband chirped fiber Bragg gratings (CFBGs) with a reflected bandwidth of 20 nm as stretchers. To make full use of the stretcher to lower the system’s nonlinearity accumulation, a homemade mode locked fiber laser with a spectral width of 14.8 nm (full width at half maximum) is selected as the seeder to offer a stretched pulse width of 1.69 ns. The main amplifier is based on a one-stage simple Yb:YAG single crystal fiber amplifier with an amplified output power of 40.6 W at a repetition rate of 200 kHz, and the beam quality is conserved in a single mode beam profile with beam quality of 1.246 and 1.142 in the horizontal direction and vertical direction, respectively. During amplification, the spectral gain narrowing effect is observed. To achieve the high-speed switch of the laser, an acoustical optical modulator (AOM) is inserted before the compressor to achieve high-speed turn-on/off control. The compressor is based on a diffraction grating pair with a groove density of 1600 line/mm to offer a dispersion match with the stretcher of the CFBGs. With the CFBG’s fine-tuned capacity of second-order dispersion and higher-order dispersion, the compressed average power of 29.6 W and pulse duration of 278 fs, corresponding to a pulse energy of 148 μJ and a peak power of 532 MW, is obtained. The beam quality is well conserved after compression, and the beam quality is 1.250 and 1.196 in the horizontal direction and vertical direction, respectively. A power fluctuation of 0.1% (root mean square) and a beam pointing drift of 8.47 μrad/°C over 8 hours are realized. This high peak power and high beam quality femtosecond laser is promising in science and industrial applications. ? 2022, The Authors. All rights reserved.
    Accession Number: 20220091664
  • Record 333 of

    Title:Rotation-Invariant Attention Network for Hyperspectral Image Classification
    Author(s):Zheng, Xiangtao(1); Sun, Hao(1,2); Lu, Xiaoqiang(1); Xie, Wei(3)
    Source: IEEE Transactions on Image Processing  Volume: 31  Issue:   DOI: 10.1109/TIP.2022.3177322  Published: 2022  
    Abstract:Hyperspectral image (HSI) classification refers to identifying land-cover categories of pixels based on spectral signatures and spatial information of HSIs. In recent deep learning-based methods, to explore the spatial information of HSIs, the HSI patch is usually cropped from original HSI as the input. And 3 × 3 convolution is utilized as a key component to capture spatial features for HSI classification. However, the 3 × 3 convolution is sensitive to the spatial rotation of inputs, which results in that recent methods perform worse in rotated HSIs. To alleviate this problem, a rotation-invariant attention network (RIAN) is proposed for HSI classification. First, a center spectral attention (CSpeA) module is designed to avoid the influence of other categories of pixels to suppress redundant spectral bands. Then, a rectified spatial attention (RSpaA) module is proposed to replace 3 × 3 convolution for extracting rotation-invariant spectral-spatial features from HSI patches. The CSpeA module, the 1 × 1 convolution and the RSpaA module are utilized to build the proposed RIAN for HSI classification. Experimental results demonstrate that RIAN is invariant to the spatial rotation of HSIs and has superior performance, e.g., achieving an overall accuracy of 86.53% (1.04% improvement) on the Houston database. The codes of this work are available at https://github.com/spectralpublic/RIAN. ? 1992-2012 IEEE.
    Accession Number: 20222412225942
  • Record 334 of

    Title:A Large Area Dynode-MCP-PMT Design With High CE and Good Time Performance
    Author(s):Chen, Lin(1); Wang, Xingchao(2,3); He, Jianli(4); Tian, Li Liping(1); Tian, Jinshou(5); Wang, Qilong(2); Shen, Lingbin(1); Wang, Yunji(1); Ding, Dongyan(1); Ji, Ke(1); Yang, Jie(1)
    Source: IEEE Transactions on Nuclear Science  Volume: 69  Issue: 10  DOI: 10.1109/TNS.2022.3204791  Published: October 1, 2022  
    Abstract:A 20-in. photomultiplier tube based on dynode and microchannel plates (Dynode-MCP-PMT) with high collection efficiency (CE) and good time performance is proposed in this article. To obtain a tailless time distribution, a pair of uncoated MCPs are employed. For a high CE, a dynode with two large openings is placed in front of the MCPs. The dynode is designed as a spherical shape to prevent secondaries from escaping the multiplication system and assist them moving to the MCPs for further multiplication. A 3-D model is developed by CST Studio Suite to validate its feasibility. Finite integral technique and Monte Carlo method are combined to simulate the photoelectron collection and multiplication processes. Results predict that for the shielded Dynode-MCP-PMT, CE is expected to be 100%. Tailless transit time distributions are observed. Transit time spread (TTS) of the photoelectrons from the cathode top point to the dynode achieves 3.7 ns. If this PMT is exposed to the geomagnetic field, it should be operated in the north and south direction, in which CE and TTS are expected to be 100% and 3.8 ns, respectively. ? 1963-2012 IEEE.
    Accession Number: 20223812755051
  • Record 335 of

    Title:R&D and application of the Abyssal Bottom Boundary Layer Observation System (ABBLOS)
    Author(s):Ji, Chunsheng(1); Jia, Yonggang(1,2); Zhu, Junjiang(3,4); Hu, Naili(1); Fan, Zhihan(1); Hu, Cong(1); Feng, Xuezhi(1); Yu, Heyu(1); Liu, Bo(5)
    Source: Earth Science Frontiers  Volume: 29  Issue: 5  DOI: 10.13745/j.esf.sf.2021.9.28  Published: September 2022  
    Abstract:In order to further study the influence of marine dynamics on the bottom boundary layer (BLL) of the northern slope, South China Sea, the Abyssal Bottom Boundary Layer Observation System (ABBLOS) was developed for in situ observations. The ABBLOS-a carrier platform with a maximum operating water depth of 6700 m (actual depth limits depend on the carried equipment)-is an important technological innovation for studying the deep-sea BBL. The platform is compose of upper and lower frames. The upper frame is used to carry and recover observation equipment, and the lower supporting frame is a counterweight and used to provide an observational space 1 meter from the seabed. A simple and effective "slot positioning with bolt fastening" connection was designed to connect the two frames to ensure a successful upper frame recovery. The ABBLOS integrates 75k-ADCP, high-frequency ADCP, ADV, high-precision pressure gauge, as well as sensors for methane, temperature, salinity, turbidity, dissolved oxygen, and ORP. For the first time, the ABBLOS achieves simultaneous observation of marine dynamic processes (such as internal waves and midscale vortices) and dynamic changes of physical and chemical parameters in the deep-sea BBL. In particular, the water flow velocity profile at 1 meter height above the seafloor can be observed with a 7 mm vertical layer resolution. The platform was successfully deployed and recovered in 2020 in the Shenhu sea area, northern slope of the South China Sea, at water depths of 655 and 1405 m. The total observation time was 34 days, and the seawater velocity profile structure was obtained. Also captured were a once-a-day (on average) internal wave action process and a set of physicochemical parameters for the BBL. After a preliminary analysis of the observation data at 655 m water depth, it was found that the temperature, pressure, dissolved oxygen, density and salinity in the BBL were controlled by the tidal process; especially, the change of temperature and pressure was in synch with tide. During a tidal cycle, the oxidative environment of the BBL was relatively stable, whilst the concentration of dissolved methane decreased with time but kept within the global background value range. Compared to the tidal process, internal waves had little impact on the abyssal BBL, but could obviously cause sediment resuspension. The turbidity of the BBL caused by internal waves increased from 0.01 to 48 NTU and meanwhile the submarine cameras also recorded turbid seawater in the BBL during the internal wave propagation, indicating the internal waves in the South China Sea can affect the transport of submarine sediment. ? 2022 Science Frontiers editorial department. All rights reserved.
    Accession Number: 20223912802110
  • Record 336 of

    Title:Remote Epitaxy and Exfoliation of GaN via Graphene
    Author(s):Han, Xu(1,2,3); Yu, Jiadong(1,2,3); Li, Zhenhao(1,3); Wang, Xun(1,3); Hao, Zhibiao(1,2,3,3); Luo, Yi(1,2,3); Sun, Changzheng(1,2,3); Han, Yanjun(1,2,3); Xiong, Bing(1,2,3); Wang, Jian(1,2,3); Li, Hongtao(1,2,3); Zhang, Yuantao(3,4); Duan, Bin(3,5); Ning, Jing(3,6); Wu, Haidi(3,6); Wang, Lai(1,2,3)
    Source: ACS Applied Electronic Materials  Volume: 4  Issue: 11  DOI: 10.1021/acsaelm.2c00997  Published: November 22, 2022  
    Abstract:The remote epitaxy of GaN via graphene has attracted much attention due to the potential of easy mechanical exfoliation, and the exfoliated layers can be transferred onto foreign substrates according to the application needs, which is beneficial to improve the performance of GaN-based devices. In this work, a GaN epi-layer was grown by metal-organic chemical vapor deposition on the monolayer-graphene-coated AlN/sapphire or GaN substrates. The influence of growth temperature, carrier gas, and substrate on the exfoliation of the GaN epi-layer was studied. When the growth temperature is no more than 800 °C and N2is used as the carrier gas, the monolayer graphene can be retained on the AlN/sapphire substrate during the growth process. Thus, the GaN epi-layer can be exfoliated successfully. However, the monolayer graphene will be destroyed under a growth temperature of 850 °C, and lead to the failure of exfoliation. Besides, the monolayer graphene can also be damaged when the H2carrier gas or GaN substrate is employed with a growth temperature of 800 °C. This causes the GaN epi-layer to be exfoliated not as well. The experimental results illustrate that suitable growth conditions and substrate are important for realizing the exfoliation of a GaN epi-layer. ? 2022 Authors. All rights reserved.
    Accession Number: 20224513055384
欧美一级内射| 曰本无码人妻丰满熟妇啪啪| 久久久精品国产sm调教网站| 国内熟女乱伦视频| 欧美香蕉视频| 免费黄色在线网站| 欧美性爱第1页| 亚洲精品成人网站| 国产91视频| av老司机在线| 三年片在线观看大全中国| 婷婷在线免费视频| 制服丝袜在线视频| 日本久久99| 99er热精品视频| 国产家庭性爰| 人妻无码久久精品人妻性色AV | 亚洲国产精品久久久久久6q| 欧美成人精品一区二区三区| 中文在线中文资源| 韩国三级少妇高潮在线观看| 久久人体| 日韩久久久久久久| 久久老熟女| 国产流白浆| 99精品视频一区二区三区| 91天堂在线| 精品福利| 日韩精品一| 日韩一级无码毛片| 岛国无码av在线播放| 黄色网址在线观看视频| 日韩一区二区在线播放| 男女黄色搞网站| 97超碰人人操| 久久久久无码精品国产sm果冻| 一区二区国产精品| 日本欧美在线| 国产精品高清无码| 成人免费黄色| 奇米影视久久| 久久给综久久线| 欧美精品一区二区三区四区| 91精品国产自产精品男人的天堂| 熟女乱伦视频一二三区| 一区二区三区欧美视频| 国产av大全| 91视频免费观看| 精产国产伦理一二三区| 91在线免费看片| 国内熟女乱伦视频| 偷偷鲁2020精品偷拍视频| 人妻精品久久久久中文字幕69| 日韩一区二区视频| 黄频在线播放| 啪,精品视频| 极品少妇XXXX精品少妇偷拍| 亚洲天堂AV网| 人人操人人摸人人爱| 产国传媒91一区久久无码| 日韩人妻精品中文字幕| 无码在线观看一区| 精品少妇一区二区三区免费观看| 青青草华人在线| 亚洲一区电影| 日本免费高清| 国产精品美女久久久久aⅴ国产馆| 久久噜噜噜| www.夜夜操| 日韩毛片在线观看| 婷婷激情久久| 日韩精品久久久久久久酒店| 91黑丝| 美女超碰| 91人妻人人澡人人爽人人精吕| 苍井空无码一区二区三区| 啪啪免费的视频| 无码一本| 在线观看国产黄| 无码成人一区二区三区入厕偷拍 | 扒开双腿猛进入的视频免费| 无码国产精品96久久久久孕妇| 尤物AV在线| 91在线观| 亚洲一区二区三区中文字幕| 欧美一级黄色大片| 久久精品成人一区二区三区蜜臀| 丝袜老师办公室里做好紧好爽| 亚洲一区二区三区在线播放| 欧美综合在线观看| 无码人妻精品一区二区蜜桃色| 91人妻人人澡人人爽人人精品 | 草草影院CCYYCOM国产绿帽| 国产AV无码一区二区| 天堂а在线中文在线新版| 日韩一级黄色大片| 国产一区二区三区毛片| 丁香五月v国产| 亚洲毛片在线| 亚洲无码成人网站| 艹逼艹久肏| 嫩草午夜少妇在线影视| 亚洲性爱无码| 成人在线视频观看| 毛片在线视频| 欧美精品一区二区三区四区| 亚洲国产影院| 国产精品V日韩精品V在线观看| 国产成人精品一区二区| 熟女一区二区三区四区| 伊人五月| 国产精品无码在线| 国产精品人妻无码久久久苍井空| 青青草手机视频在线观看| 中文字幕人妻无码系列第三区 | 日韩无码影院| 国产精品激情偷乱一区二区∴ | 国产V综合V亚洲欧美久久 | 国产精品无码在线观看| 欧美性爱视频在线播放| 老熟妇一区二区三区啪啪| 被体育老师抱着c到高潮| 人人操人人草人人操人人看| 99热最新| 日本不卡视频| 久久中文字幕av| 91AV在线视频蜜乳| 成年免费视频黄网站在线观看| 操逼网站视频| 亚洲天堂av无码| 成人在线中文字幕| 婷婷综合五月| 91人妻无码| 日韩久久影院| 老熟女太熟了A91V| 天天操狠狠干| 六十路熟女视频| 99视频内射三四| 91看片在线观看| 91偷拍精品一区二区三区| 91成人片| 蜜桃av在线| 午夜成人福利视频| 久久综合伊人| 久久久久国产| 欧美高清一区二区| 久久99精品久久久久久水蜜桃| 亚洲精品一区二区三区在线观看| 国产成人精品区一二三影院竹菊 | 一级a一级a爰片免费免免免下载| 做受无码免费一区二区| 伊人网视频| 亚州国产| 91高清无码视频| 911精品国产一区二区在线| 国产aⅴ| 人人看人人干| 久久久久91| 人人看人人干| 91偷拍一区二区三区精品| 婷婷综合影院| 激情久久AV一区AV二区AV三区 | 日韩视频一区二区三区| 日本三级少妇三级99夜在线观看 | 国产96在线| 无遮挡无掩盖的网站| 中文字幕免费| 午夜丰满极品美女A片| 日韩无套| 日韩一级黄色片| 99精品免费久久久久久久久| 天堂网在线视频| 青青草国产| 极品91尤物被啪到呻吟喷水| 久久综合99| 精品久久久久久人妻无码中文字幕| 欧洲免费视频| 人妻中文av| 性爱一区二区三区| 欧美高清HD18日本| 成人乱人乱一区二区三区| AV无码免费| 日本三级中国三级99人妇网站| 亚洲无码字幕| 国产精品三级片| 2023年中文字幕无码不卡| 四虎毛片| 精品视频99| 亚洲天堂手机版| 91成人在线| 中文字幕在线视频免费观看 | 亚洲中文字幕久久精品无码一区| 人与禽性视频77777| 香蕉视频一区二区| 国产美女裸体永久免费无遮挡| 免费观看黄色网| 极品视频在线| 污视频在线播放| 二区免费视频| 国产精品18| 男女激情网站| 国产中文在线观看| 老熟妇午夜毛片一区二区三区| 毛片久久| 中文幕无线码中文字夫妻| 日韩三级在线观看视频| 超碰 97一区二区| 午夜福利理论片一区二区三区| 中文字幕在线播放| 无码人妻少妇一区二区三区波多| 久久香蕉黄色电影| 色婷婷av久久久久久久| 黄色小视频在线观看| 无码电影院| 欧美三日本三级三级在线播放| 人人看人人摸人人干人人操| 精灵梦叶罗丽第八季| 无码视频专区| 黄页在线观看| 国产精品久久久久久久久久久新郎 | av天堂中文在线观看| 一区二区自拍| 日韩国产精品一级毛片在线| 欧美高清视频| 五月婷婷大香蕉| 成人三级片在线观看| 性色AV蜜臀AV色欲AV| 日韩做a爱片久久毛片A片| 亚洲欧洲综合| 国产特级黄片| 琪琪午夜成人久久电影网| 国产免费一区二区三区在线观看| 最新国产无码| 乱老女人一区二| 秋霞伦理视频| 精品国产亚洲AV| 无码一级毛片一区二区视频孕妇| 一级AV电影| 少妇人妻真实偷人精品| 日韩啪啪啪网站| 亚洲综合国产成人小说| 日本无码成人片在线观看波多| 99久久这里只有精品| 久久久久久久久久一级| 日本精品三区| 婷婷五月天激情网站| 激情乱伦五月天| 日韩欧美性爱视频| 欧美香蕉视频| 天天干天天爽| 国产精品爽爽久久久久久豆腐| 欧美日韩一| 亚洲黄色天堂| 国产毛片在线| 熟女综合网| 9l视频自拍蝌蚪9l视频成人| 国产操逼网址| 婷婷综合色| 成人午夜福利视频| 亚洲AV丰满熟妇在线播放| 精品无码区| 99视频免费在线观看| 天天视频色| 一级大片网站| 九九热视频在线| 人人妻人人摸| 日本黄色一级| 91免费在线| 狠狠人妻久久久久久综合蜜桃 | 久久99综合| 人妻中文字幕一区| 性国产精品| 人妻中文无码| 国产女人爽到高潮a毛片| 亚洲另类春色| 男女啪啪网址| 欧美黑人xxx| 欧美操逼视频| 久热精品在线| 色午夜婷婷| 国产精品 家庭乱伦| 欧美一区二区三区AA大片漫| 欧美一级特黄片| 国产SUV精品一区二区6| 亚洲无码一区二区av| 国产欧美黄片| 秋霞在线视频| 一级片在线观看| 国产成人无码精品亚洲| 视频一区二区无码| 韩国无码在线| 黄色91视频| 日韩午夜精品| 粉嫩av久久一区二区三区小说| 久久国产精彩视频| 久久99视频精品| 色爱综合网| 亚洲精品成人| 国产深夜视频| 黄片在线免费播放| 91中文人妻熟女乱又乱精品| 在线看91| 日本一级A片| 国产欧美视频在线| 狠狠操夜夜操天天爱| 黄色一级网站| 国产精品大片| A片高潮狂喷白浆| 丰满少妇爆乳无码免费| www夜片内射视频日韩精品成人| 日韩无码一级片| 日韩精品中文字幕一区| 午夜丰满少妇性开放视频| 一区二区不卡| 国产无码精品一区| 亚洲综合成人网| 国产在线成人| 色欲AV伊人久久大香线蕉影院| 激情操逼视频| 精品一区在线| 日韩成人片在线观看| 欧美激情精品久久久久久| 99久久久国产精品免费蜜臀| 久久免费精品| 欧美日韩精品免费观看视频| 成人网站在线观看免费| 亚洲无码二区| 性爰黄一级| 红桃视频一区二区三区免费| 99色色视频| 日韩在线中文字幕| 三人成全免费观看电视剧高清| 国产婷婷色一区二区三区在线| 日韩黄色片| 四季AV一区二区夜夜嗨| 东北亲子乱子伦视频| 一区二区日韩无码| 日本性爱视频在线观看| 欧美专区二区| 国产人妻人伦精品1国产盗摄| 91婷婷国产欧美一区二区| 亚洲精品毛片| 豪妇荡乳1一5潘金莲| 亚洲国产精选| 天天干夜夜欢| 丰满熟妇大号BBWBBWBBW| 精品无码久久久久| 欧美草逼视频| 中文字幕狠狠玩| 少妇喷水| 亚洲综合国产精品| 国产成人亚洲综合| 一区在线播放| 91久久人人操人人爱人人摸| 免费AV观看| 色翁荡熄又大又硬又粗又视频| 无码在线不卡| 中文在线免费看视频| 日韩一级淫片| 国产精品三级| 亚洲精品无码一区二区四区| 嫩草影院一区二区| 精品人妻一区二区三区日产乱码| 欧美激情乱伦| 天天色天天操天天| 亚洲成人精品一区二区三区| 国产一级a毛一级a在线观看| 国产黄色影院| japan极品人妻videos| 国产精品亚洲精品| 国产一区精品在线| 国产一级a毛一级a免费看视频| 中文字幕无码在线观看| 日韩精品操屄| 国产又粗又猛又大爽| 黄色A级大片| 五月婷婷丁香| 久久午夜视频| 中文字幕无码av| 国产精品久久久久野外| 午夜精品一区二区三区在线视频| 成人日韩无码| 欧美激情五月天| 国产一级做a爱片久久毛片A| 理论片无码| 天天操人人爱| 色婷婷亚洲| 日韩三级黄片| 中文字幕www| 99精品久久久久久| 91老肥熟| 国产麻豆剧传媒精品国产av| 一级黄片免费| 视频一区在线| 久久免费精品视频| 国产一区二区在线视频| 丁香婷婷在线| 国产伦精品一区二区三区高清| 熟女乱一区二区三区四区 | 北条麻妃精品毛片AV| 久久一本| 久久精品无码一区三区| 日本91视频| 亚洲国产永久7777kkk| 久久精品国产亚洲AV麻豆图片| 无码流出在线观看| A片免费网站| 91成人无码看片在线观看| 国产黄片一区二区| 色欲AV人妻精品一区二区三区| 国产一区二区免费| 91精品在线观看视频| 操逼免费| 91丝袜精品久久久久久无码人妻| 国产成人精品在线| 无码第一页| 国产91在线拍揄自揄拍无码九色 | 天堂中文在线视频| 亚洲大片在线观看| 日本黄色免费看| 欧美一二三| 小黄片在线免费观看| 久久午夜免费视频| 日本无码电影| 免费人妻无码| 国产免费无码一区二区| 三上悠亚在线视频| 欧美日韩视频在线| 欧美日韩性爱视频| 99精品视频在线| 天堂在线视频| 久久久久久亚洲av| 午夜AAAAAA片免费观看| 中文无码日本一级A片久久影视| 色欲无码精品一区二区三区99满| 国产伦精品一区二区三区妓女下载| 久久99精品国产| 国产精品情侣| 亚洲啪啪视频| 国产伦精品一区二区三区四区| 乱伦一区二区三区| 国产精品无码一区二区三级不卡不| 色哟哟国产精品| 精品人妻一区二区三区日产乱码卜| 亚洲一区视频| 漂亮人妻洗澡公日日躁| 俄罗斯毛毛xxxx喷水| 男人天堂av片| 亚洲巨爆乳一区二区三区四季网| 久久发布国产伦子伦精品| 97视频在线| 97国产色呦呦呦夜嗨嗨| 波多野结衣中文字幕久久| 天天干夜夜干。| 国产成人无码区二区三区牛牛影视| 18禁网站在线| 成人网址在线观看| 亚洲无码一区二区av| 91免费看片| 一区二区三区成人电影| 精品成人网| 久久夜色精品国产欧美乱极品| 无码在线一区二区三区| 手机特级视频免费在线观看| 凹凸视频在线| 国产精选视频| 亚洲AV小说| 蜜乳AV综合免费观看| 成人毛片18女人毛片免费| 99国产精品| av黄色在线免费观看| 日韩精品久久中文字幕 | 国产精品主播| 日韩美女网站| 黄色无码大片| 亚洲人成色777777网站| 国产毛毛浓密茂盛| 中文字幕第一区| 最近免费中文字幕大全免费版视频| 91中文字幕在线观看| 色欲aⅴ入口| 一区二区三区欧美| 国产精品久久AV无码| 精品人豆妻| 91口爆吞精国产对白| 91AV视频在线观看| 精品一区二区久久久久久无码 | 青娱乐国产视频| 福利120无码| 亚洲一区中文字幕| 无码性生活| 国产aⅴ激情无码久久久无码| 69国产| 91精品国产92久久久久| 婷婷在线综合| 国产一级无码Av片在线观看| 91popny丨九色丨白丝| 蜜桃五月天| 久久国产Av无码一区二区| 嫩草视频在线观看| 91精品久久久久久综合五月天| 热re99久久精品国产99热| 欧美日韩国产一区二区| 激情动态视频| 人人操人人舔| 一区二区三区成人| 国产高清不卡| 欧洲无乱码一二三区| 一级特黄视频| 成人在线中文字幕| 在线不卡视频| 日韩久久无码视频| 精品一区二区久久| 国产亚洲AV永久无码国产天堂| 精品99久久久久成人网站免费| 日韩一级二级三级| 国产精品一区二区不卡| 韩国一级毛片| 国产操逼综合| 免费高清无码| 91久久精品无码一区二区天美| 欧美日韩一| 无码第一页| 伦理片| 一区免费视频| 婷婷开心激情网| 欧美日韩性| 无码精品人妻| 一区二区三区四区在线播放| 精品亚洲国产成人AV制服丝袜| 精品一区二区无遮挡高潮大片| 亚洲h片| 国产黄片在线看| 日韩欧美国产视频 | av黄色在线免费观看| 久久久久久无码精品大片| 成人在线性爱免费视频| 三级片中文字幕| 国产一级一区| 亚洲最大激情网| 亚洲毛片在线| 免费在线观看毛片| 一级做a视频| 二区无码| 国产黄在线观看| 天天摸天天日| 日本熟女一区二区| 99久久精品免费视频| 国产精品久久久久久久久久辛辛| 精品久久久久久人妻无码中文字幕| 色婷婷九月天天综合| 国产又粗又大又黄| 91人妻无码| 日韩久久无码视频| 久久精品欧美一区二区三区不卡| 色妞视频| 色综合天天综合网国产成人网| 奶乳咪咪人无码AV网址| 午夜视频国产| 欧美综合在线观看| 午夜一区二区三区| 国产免费一区二区三区在线观看| www.操逼视频| 久久无码高清视频| 国产亚洲精品久久久久久91| 中文字幕专区| 国产家庭乱伦| 国产精品a免费一区久久网址| 欧美黄片一区二区三区| 69久久久| 日韩无码视频免费观看| 国产精品伦一区二区三区免费| 成人在线网站| 色悠悠在线| 国产真人无遮挡作爱免费视频| 欧美妞干网| 一级Av片| 中国黄色一级视频| 亚洲无码操逼| 国产中文字幕熟女乱伦| 精品亚洲国产成aV人片传媒| 国产精品毛片久久久久久久| 欧美高清视频| 日本伊人网| 97视频在线| 成人性爱视频在线观看| 黑人极品videos精品欧美裸| 999精品视频在线观看| 蜜臀导航| 青青草成人网| 成人无码日韩| 日韩无码视屏| 91麻豆精品91久久久久久清纯| 中文字幕第一区| 午夜操一操| 人妻中文字幕一区二区三区| 超碰在线国产| 日本人妻中文字幕| 亚洲午夜福利精品国产字幕制服| 亚洲一级黄色| 国产精品婷婷久久爽一下| 日韩黄色精品| 国内乱伦AV| 探花日韩无码| 黄网站免费观看| 国产精品无码一区二区三级不卡不| 国产人妻鲁鲁一区二区| 日韩精品无码免费| 99热最新| 久久久久久久久久一级| 久久riav| 国产成人精品久久二区二区| 一级无码毛片| 人妖AV| 国内精品久久久久久久影视4| 国产91丝袜在线熟女| 这里只有精品视频| 中文字幕影院| 久久久久无码国产精品Sm高潮 | 午夜成人福利视频| 三上悠亚一区二区| 亚洲精品无码视频| 97国精产品无人区一码二码| 免费看一级毛片| 久久精品WWW人人爽人人| 日韩欧美V| 一区二区三区xxx| 女人高潮被爽到呻吟在线观看| 91麻豆网| 91麻豆精品秘密入口| 亚洲图片一区二区| 欧美在线一区二区| 国产三级一区二区| 亚洲AV无码乱码国产精品牛牛| 国产不卡在线| 成人午夜sm精品久久久久久久| 日韩AV无码专区| 中文字幕综合网| 91成人网| 亚洲一区二区三区视频| 丰满肥臀无码一区二区三区| 天天操网站| 丰满熟妇乱又伦| 中文字幕黄色| 黄色A一级狂操| 国产一区在线午夜福利影片观看 | 91看黄片| 疼死了大粗了放不进去视频锡| 国产主播99| 黄片AV在线| 欧美日本一区二区| 久久国产成人精品av| 国产免费操逼视频| 久草视频免费在线观看| 三人成全免费观看电视剧高清| 精品无人区一区二区三区蜜桃小说| 国产精品一区二区电影| 变态另类第一页| 精品视频在线观看99| 精品国产乱码久久久久久图片| 国产AV不卡| 国产精品偷伦免费观看视频| 成全视频观看免费高清第6季| 二区视频| 亚洲AV综合色区无码| 成年人免费视频网站| 国产一国产一级毛片日本导航| 啪啪免费无插件视频| 一区二区精品| 人妻一区二区三区四区| 国产精品一区二区免费看| 开心激情网站| 欧美一区永久视频免费观看 | 国产女人18水真多18精品一级做 | 亚洲黄色一区| 欧美性受XXXX黑人XYX性爽| 国产精品91在线| 日本不卡在线观看| 午夜精品久久久久久久四虎美女版| 欧美日韩视频一区二区| 国产伦精品一区二区三区视频免费| 欧美中文在线| 亚洲精品无码高潮喷水A片软| 日韩黄片小视频| 一级黄色大片| 久久精品黄片| 日韩av在线免费| 日日夜夜爽| 91精品国产色综合久久不卡电影| 理论片无码| 人妻99| 亚洲激情在线| 久久久婷婷五月亚洲国产精品| 人人爱人人摸| 狠狠躁三区二区久久天天| 国产欧美高清| 一区高清无码| 99在线播放| 91热久久| 日韩欧美爱爱| 熟女综合| 国模精品一区二区三区| 岛国av一区二区三区| 欧美视频| 免费看一级黄色片| 国产中文字幕视频| 黄色免费av| 欧美一级性爱视频| 91久久偷偷做嫩草影院| 无码做爰内谢免费视频| 日韩精品5| 国产欧美一区二区精品97| 精品人妻无码| 蜜桃久久av无码牛牛影视| 在线视频91| japanese老熟妇乱子伦视频| 潮喷在线| 人妻系列中文字幕| 日韩成人无码视频| 日韩免费看片| 久精品视频| 性爱一区| 成人在线视频观看| 中文字幕亚洲天堂| 无码人妻毛片丰满熟妇区毛片色欲 | 高清无码免费| 中文在线a√在线8| 日日噜噜夜夜狠狠久久丁香五月| 欧美伊人影院| 这里只有精品视频| 无码喷水| 一级黄色电影网站| 又做又爱视频免费| 国产日韩精品无码区免费专区国产| 久久人妻视频| 中文字幕一级| 国产性爱一级| 一区二区三区激情啪啪视频| 一区二区视频免费观看| 青青操av| 99在线视频免费观看| 日韩性爱av免费观看| 老妇高潮潮喷到猛进猛出| 五月丁香五月婷婷| 日本熟妇色| 欧美日韩国产精品| 日韩欧美在线看| 成人性生交大片免费看小优| A片高潮狂喷白浆| 国产精品人妻无码一区二区三区| 特级特黄AAAAAAAA片| 欧美熟女乱伦| 91视频免费观看| 91麻豆精品国产91久久久久久久久| 久久国产Av无码一区二区| 91视频精品| 人妻 丝袜美腿 中文字幕| 国产一级毛片精品A片在线美传媒| 最新中文字幕在线观看| 免费黄色大片| 欧美视频中文字幕| 日韩精品视频在线免费观看| 一区二区三区激情啪啪视频| 91av入口| 精品欧美久久| 日本一区二区不卡| 亚洲九九无码精品| 日韩黄色片在线观看| 9.1成人看片| 二区三区无码| 嫩草在线视频| 久久青草视频| 午夜一级黄色片| 嗯啊不要在线观看| 无码人妻精品一区二区蜜桃色| 人人插人人操| 国产精品天天狠天天看| 欧美一二三区| 欧美高清一区| 对白刺激国产子与伦| 精品一区二区三区四区| 亚洲网站在线观看| 天堂AV一区| 精灵梦叶罗丽第八季| 台湾无码A片一区二区| 精品一区二区三区中文字幕| 国产AV网站入口| 综合久久亚洲| 久草免费在线视频| 中文字幕无码专区| 亚洲欧洲在线观看| 欧美性爱乱伦| 日韩免费观看视频| 色午夜视频| 国产精品伦一区二区三区免费| 国产99久久| 一级二级毛片| 性爱在线网址| 毛片网站在线看| 日韩欧美三级在线| 在线小视频| 成人免费无码淫片在线观看免费| 精品一区二区不卡| 国产精品人| 日韩福利视频| 一级a爱大片免费视频| 五月婷婷视频在线观看| 国产黄片在线播放| 国产精品三级| 尤物网在线观看| 人妻无码内射| 国产大片免费看| 婷婷视频在线| 亚洲精品变态另类虐交| 一区高清无码| 亚洲一级黄色电影| 亚洲成a人片7777777影片| 精品无码黑人又粗又大又长| 色婷婷五月天| 精品在线一区二区| 国产无码自拍| 久久AV秘一区二区三区| 日韩一二三四五区| 亚洲一区二区三区AV天堂| 婷婷在线视频| 日韩国产欧美视频| 日韩一区二区三区视频在线观看| 97午夜福利| 日韩免费视频| 精品国产91久久久久久黄无码4438| 99久久久无码国产精品性九价| 亚洲AV无码变态另类在线播放 | 91视频免费观看| 欧美一a一片一级一片| 国产毛片在线| 在线观看一区| 亚洲丰满少妇在线播放| 国产精品久久久久久婷婷天堂| 色偷偷偷亚洲综合网另类| 91精品欧美| 一级特黄色片| а√天堂中文在线资源8| 91精品福利| 免费看一级毛片| 三级片免费观看网址| 中文字幕黄片| 99色婷婷| 日韩在线视频免费观看| 熟女乱亚洲| 99在线看| 久久久精品影院| 亚洲成a人片7777777影片| 国产高清成人久久| 午夜男人视频| 日韩操逼| 久久久精品欧美一区二区白云视色| 欧美三日本三级少妇三级在线播放| 99热网站| 国产黄片久久| 九九热在线观看| 国产精品国产三级国产专播I12| 国产精品国产成人国产三级| 国产一区中文字幕| 亚洲AV综合AV一区二区三区| AV电影在线观看| 日韩一级一级| 少妇高潮一区二区三区99刮毛| 日韩少妇无码视频| 精品国产一区二区三区久久久蜜月| 曰本欧美伊人久久| 日韩欧美视频在线| 婷婷五月天成人| 无码国产伦一区二区三区视频| 高清不卡无码| 国产精品无码一区二区三区,| 91麻豆精品视频| 精品久久99| 青青青青操| 女同一区二区三区| 久久精品国产精品| 精品一区在线| 九九色色| 激情五月天在线| 久久精品欧美一区二区三区不卡| 一区二区三区性爱视频| 色午夜视频| 国产亚洲色婷婷久久99精品| 国产乱国产乱老熟300部| 激情一区二区三区| 婷婷五月天成人| 无套内射在线观看| 无码人妻丰满熟妇片毛片| 丰满人妻熟女aⅴ一区| 天天干天天拍| av电影观看| 日本一本视频| 成人欧美一区二区三区白人| 国产精品国产三级国产普通话三级| 无码A片在线看www不卡福利姬| 91在线视频在线观看| 日本电影一区二区三区| 欧美精品一区二区三区久久久竹菊 | 全部孕妇孕交BBBBBB| 国产乱伦网站| 欧美在线一区二区三区| 无码视频二区| 99精品欧美一区二区三区黑人| 91精品久久久久久久久| 毛片免费试看| 美女AV网站| 国产乱视频| 欧美日韩精品一区二区三区四区| 亚洲无码在线观看免费| 天堂精品| 国产一区黄色| 乱伦视频区91| a级无码毛片| 欧美三级片视频| 亚洲一区二区三区四区在线| 久久亚洲网站| 亚洲综合精品| 91视频网址入口| 国产四区| 人妻毛片| 国产A级片| 成人午夜在线| 日韩天天操| 国产精品视频合集|