A5028141618- Gas Sensing Nanomaterials and Sensors
- Graphene research and applications
- 2D Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Photonic and Optical Devices
- Ga2O3 and related materials
- Advanced Fiber Optic Sensors
- Perovskite Materials and Applications
- Spam and Phishing Detection
- Conducting polymers and applications
- Advanced Photonic Communication Systems
- Photoacoustic and Ultrasonic Imaging
- Graphene and Nanomaterials Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Image Fusion Techniques
- Image Enhancement Techniques
- Quantum Dots Synthesis And Properties
- Advanced Fiber Laser Technologies
- Advanced Malware Detection Techniques
- Plasmonic and Surface Plasmon Research
- Acoustic Wave Resonator Technologies
- Advanced MEMS and NEMS Technologies
- MXene and MAX Phase Materials
- Advanced Optical Sensing Technologies
- Analytical Chemistry and Sensors
Northwestern Polytechnical University
2021-2024
State Key Laboratory of Silicon Materials
2017-2022
Zhejiang University
2017-2022
Abstract Silicon photonics is being extended from the near‐infrared window of 1.3–1.5 µm for optical fiber communications to mid‐infrared (mid‐IR) wavelength‐band 2 or longer satisfying increasing demands in many applications. Mid‐IR waveguide photodetectors on silicon have attracted intensive attention as one indispensable elements various photonic systems. However, when combining traditional semiconductor materials with silicon, there are some challenges due lattice mismatch and thermal...
By exploiting the adsorbent gaseous molecules induced changes in intrinsic properties of graphene/silicon (Gr/Si) Schottky junction, authors report a sensitive, low‐power consuming, multimode environmental sensor. combining an array Gr/Si diodes with differential amplifier circuit, are able to not only differentiate temperature coefficient and humidity sensing, but also monitor sun‐light exposure time. Our device is particularly sensitive toward both forward reverse biased, works resistive...
We report a high-performance graphene/ultra-thin silicon metal-semiconductor-metal (MSM) ultraviolet (UV) photodetector, which benefits from the mechanical flexibility and high-percentage visible light rejection of ultra-thin silicon. In near- mid-UV spectral region, proposed UV photodetector exhibits high photo-responsivity (0.47 A/W @ 3 V), fast time response (1 ps), specific detectivity (2.5 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The ultimate image with important information and better visuals can be obtained by fusing infrared visual images. Several fusion methods consist of complex networks to derive the finest parameters from different source images do not exploit reliable salient completely. To avoid limitations loss feature information, we have proposed a multilayer triple dense network for visible named as MTDFusion, which completely exploits features utilizes residual combination input adaptively. encoding is...
Abstract A metal-oxide-semiconductor heterostructure is a prominent solid-state device used extensively in photo detection and logic operations. The insulating dielectric layer crucial for the device's performance. When operated under dynamic high electric field conditions, leakage current due to Fowler-Nordheim tunneling oxide, leads power consumption. injection of hot carriers into oxide can create pin-holes cause breakdown, further degrading characteristics.&#xD;In this study, we...
The realization of high-speed optical communication and sensitive light detection with self-powered perovskite photodetectors (PDs) is imperative for advancing AI-driven optoelectronic systems, including visible (VLC), surveillance, environmental...
Hot electron transistors (HETs) containing two-dimensional (2D) materials promise great potential in high-frequency analog and digital applications. Here, we experimentally demonstrate all-2D van der Waals (vdW) HETs formed by graphene, hBN, WSe2, which the polarity of carriers could be tuned changing bias conditions. We proposed a theoretical model to distinguish hot hole components ambipolar vdW HET. Importantly, both modes are achieved with pronounced saturation behavior as well...
This work presents the development of flexible dual-mode surface acoustic wave (SAW) sensor based on single crystalline thin film lithium niobate (TF-LN). Numerical modeling is conducted to investigate SAW propagation and effects strain sensitivity. The dependence sensitivity angles between applied direction analyzed numerically experimentally, showing that maximum at 45° rather than longitudinal direction. 128° Y-cut TF-LN (~50 µm), obtained by micromachining technique, utilized as...
Cryopreservation is essential to effectively extend the shelf life of delicate biomaterials while maintaining proper levels cell functions. requires a cryoprotective agent (CPA) suppress intracellular ice formation during freezing, but it must be removed prior clinical use due its toxicity. Conventional multistep CPA loading and unloading approaches are time consuming, often creating osmotic shocks causing mechanical injuries for biological samples. An efficient surface-acoustic-wave- (SAW-)...
The lubricating ability of graphite largely depends on the environmental humidity, essentially amount water in between its layers. In general, intercalated molecules layered materials modify their extraordinary properties by interacting with To understand interaction graphene layers, we performed Raman measurements bi-layer at various humidity levels and observed an additional peak close to that low-frequency layer breathing mode two is attributed vibration We further propose monolayer...
The proliferation of multimedia-based deepfake content in recent years has posed significant challenges to information security and authenticity, necessitating the use methods beyond dependable dynamic detection. In this paper, we utilize powerful combination Deep Generative Adversarial Networks (GANs) Transfer Learning (TL) introduce a new technique for identifying deepfakes multimedia systems. Each GAN architectures may be customized detect subtle changes different formats by combining...
Among various one-dimensional (1D) materials, antimony selenide (Sb2Se3) has the large visible to near-infrared (vis–NIR) absorption cross section and excellent stability; thus, it shows a huge potential be applied as photodetectors. However, low electrical conductivity (10–6 Ω–1·m–1 in bulk state) largely limits extensive applications of Sb2Se3. By hot-injection-based Sn/Sb substitution strategy, we prepare 1D Sb2–xSnxSe3 microrods further improve photodetecting performances Sb2Se3...
Graphene-based optical sensing devices have been widely studied for their broad band absorption, high carrier mobility, and mechanical flexibility. Due to graphene's weak light studies on graphene-based thus far focused hybrid heterostructure enhance photo-absorption. Such need a complicated integration process lead deteriorating mobility as result of heterogeneous interfaces. Rippled or wrinkled graphene has in electronic optoelectronic devices. However, concrete demonstrations the impact...
Parametric optimization of gold (Au) square-shaped nanopillars (AuNPLs) arrays deposited on glass substrate (AuNPLs/glass) was performed through optical characteristics for high-performance detection and biosensing purpose from visible to very near-infrared spectral (0.5 ≤ λ ≤0.8μm). This is aimed at predicting optimum parameters which result in strong enhancement next-generation optronic devices. The were limited the AuNPLs height (H), interslit distance (W1), slit width (W2) investigating...