A5085659238- Terahertz technology and applications
- Random lasers and scattering media
- Photonic and Optical Devices
- Thermography and Photoacoustic Techniques
- Optical and Acousto-Optic Technologies
- IoT-based Smart Home Systems
- Plasmonic and Surface Plasmon Research
- Infrared Thermography in Medicine
- Spectroscopy Techniques in Biomedical and Chemical Research
- Water Quality Monitoring Technologies
- Wireless Sensor Networks and IoT
- Advanced Chemical Sensor Technologies
- Neural Networks and Reservoir Computing
- IoT and Edge/Fog Computing
- Advanced Optical Imaging Technologies
- Ultrasonics and Acoustic Wave Propagation
- Optical Systems and Laser Technology
- Spectroscopy and Laser Applications
- Advanced Sensor and Control Systems
- Fractal and DNA sequence analysis
- Astronomical Observations and Instrumentation
- Photonic Crystals and Applications
- Optical measurement and interference techniques
Chinese Academy of Sciences
2016-2024
Shenzhen Institutes of Advanced Technology
2016-2024
University of Chinese Academy of Sciences
2019-2024
Chinese University of Hong Kong
2016-2023
Shenzhen University
2021
Jinan University
2014
We demonstrate an automatic recognition strategy for terahertz (THz) pulsed signals of breast invasive ductal carcinoma (IDC) based on a wavelet entropy feature extraction and machine learning classifier. The packet transform was implemented into the complexity analysis transmission THz signal from tissue sample. A novel index energy to Shannon ratio (ESER) proposed distinguish different tissues. Furthermore, principal component (PCA) method classifier were further adopted optimized...
As an alternative solution to the lack of cost-effective multipixel terahertz cameras, single-pixel imaging that is free from pixel-by-pixel mechanical scanning has been attracting increasing attention. Such a technique relies on illuminating object with series spatial light patterns and recording detector for each one them. This leads trade-off between acquisition time image quality, hindering practical applications. Here, we tackle this challenge demonstrate high-efficiency based...
In this article, we demonstrate an efficient terahertz single-pixel imaging system incorporating deep learning networks. Experimental results show that by combining a Hadamard with the network, sampling time per pattern can be reduced to 1/20 of conventional and number patterns 10% pixels while maintaining high image quality acceptable signal-to-noise ratio above 20 dB structural similarity more than 0.85. We thus expect article advance development real-time promote its applications.
We propose and demonstrate a single-pixel imaging method based on deep learning network enhanced singular value decomposition. The theoretical framework the experimental implementation are elaborated compared with conventional methods Hadamard patterns or convolutional autoencoder network. Simulation results show that proposed approach is capable of reconstructing images better quality especially under low sampling ratio down to 3.12%, fewer measurements shorter acquisition time if image...
We demonstrate Fourier single-pixel imaging in the terahertz regime. The experimental system is implemented with a photo-induced coded aperture setup, where monolayer graphene on high-resistance silicon substrate illuminated by laser beam works as modulator. Results show that high-quality images can be reconstructed using greatly reduced number of measurements. further find deep modulation adding and high power significantly improve image quality. Compared to Hadamard re-ordered matrix,...
Spectroscopic measurements and terahertz imaging of the cornea are carried out by using a rapid scanning time domain spectroscopy (THz-TDS) system. A voice coil motor stage based optical delay line (VCM-ODL) is developed to provide rather simple robust structure with both high speed large length. The system used for THz spectroscopic corneal tissue different amounts water content, measurement results show consistence reported results, in which VCM-ODL factor 360 shorter than traditional...
As the continuous development of Internet Things (IOT), life intelligent gradually. Therefore, home devices remote/short-range monitoring become inevitable trend development. Based on this background, smart system is presented based STM32 and ZigBee technology. The uses a low-power-cost processor as main controller porting μC/OS-II μC/GUI achieved. resistive touch screen human-computer interaction interface, combined with technology to achieve short-range devices. transplanted modified...
We numerically investigate the thermal effects in a cornea illuminated by terahertz radiation. By modifying bioheat and Arrhenius equations, we studied heat-transfer temperature distributions corneal tissue, evaluated potential damage. The influence of beam radius power density are discussed. also estimated effective cornea-collagen shrinkage region, degree damage cornea. expect this work to open up novel safe thermal-treatment approach based on THz radiation for reshaping field ophthalmology.
We demonstrate terahertz single-pixel imaging is improved by using a photomodulator based on silicon passivated with SiO 2 . By exploring various thicknesses, we show that the modulation factor of as-fabricated can reach 0.9, three times bare silicon. This improvement originates from chemical passivation, as well anti-reflection. Single-pixel experiments compressed sensing method reconstructed images adopting new have better quality than conventional modulator Since passivation process...
We demonstrate a deep residual network with transfer learning strategy for automatic terahertz (THz) recognition of the hidden defects in fiber reinforced polymer (FRP) composites small-scale training data. The performance high accuracy, precision, sensitivity and specificity indicate effectiveness proposed method automatically identifying different THz nondestructive applications.
We propose and demonstrate a low-cost single-pixel terahertz imaging method based on near-field photomodulation compressed sensing. By using monolayer graphene silicon substrate as the photomodulator, continuous-wave laser digital micromirror device for effective patterned photomodulation, we achieve fast sensing algorithm. further show that adopting leads to deeper modulation depth thus better image quality than high-resistance substrate. expect this work will advance development of promote...
Here, we propose an effective classification strategy for THz pulsed signals of breast tissues based on wavelet packet energy (WPE) feature exaction and machine learning classifiers. The parafin-embedded tissue samples were adopted in this study identified as tumor (226 samples), healthy fibrous (233 samples) or adipose (178 the histological results. Firstly, acquired using a standard transmission time-domain spectrometer. Then, decomposed by transform (WPT) features WPE extracted. To reduce...
The study has design and implementation of smart home intranet based on ZigBee. As the continuous development Internet Things (IOT), life intelligent gradually. Therefore, designed become inevitable trend development. is going to talk about an Intelligent Monitoring System ZigBee which was by author. system uses a low-power-cost CC 2430 processor as central controller, present gateway wireless access scheme base network. touch screen interface allows technology achieve monitoring device....