Zhang Shi

University of Chinese Academy of Sciences

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Li Han

Shanghai Institute of Technical Physics

Kaixuan Zhang

University of Chinese Academy of Sciences

Zhenrong Sun

East China Normal University

Jiali Yao

East China Normal University

Mengjie Jiang

Institute of Psychology, Chinese Academy of Sciences

Xiaoshuang Chen

Shanghai Institute of Technical Physics

Yuecheng Shen

Sun Yat-sen University

Lianzhong Deng

East China Normal University

Shijian Tian

Donghua University

Dalong Qi

East China Normal University

Cooperative Institutions

Chinese Academy of Sciences

Shanghai Institute of Technical Physics

East China Normal University

University of Chinese Academy of Sciences

State Council of the People's Republic of China

Zhejiang University

Donghua University

University of Shanghai for Science and Technology

Shanxi University

Hunan University

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Spatiotemporal shearing-based ultrafast framing photography for high performance transient imaging

Photonics Research (2025)

Yuqi He Yunhua Yao Jiali Yao Zhengqi Huang Mengdi Guo

Shearing (physics)

Framing (construction)

Ultrafast optics

Point spread function

10.1364/prj.550060

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LD PUMPED Cr~(4+) :Nd~(3+):YAG SELF Q-SWITCHED LASER

Jun Chen Zhang Shi

WT5”BZ]Using the Laser diode with λ =808nm and 4W power to pump the Cr 4+ :Nd 3+ :YAG microchip, the self Q switched laser pulses are obtained. In the case of CW pumping the output laser is pulsed with the repetition rate of 10kHz and pulse width of 40ns. In the case of pulsed pumping the output laser serial with several sub pulses is obtained. Using a certain base current adding on the rectangular pulsed pump current the stable single pulse is obtained. [WT5”HZ]

Q-switching

Pulsed laser

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Supplementary document for Surface birefringence of regular periodic nanoripples produced on glass coated with indium tin oxide film using a low-fluence femtosecond laser through a cylindrical lens - 4804761.pdf

Long Chen Kaiqiang Cao Jukun Liu Tianqing Jia Zhang Shi

Indium tin oxide

10.6084/m9.figshare.12923867.v1

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Surface Microstructure and Superhydrophobic Abilities of Euphorbia Antiquorum and Euphorbia Neriifolia var. Cristata Leaves

Zhang Shi

Euphorbia antiquorum and Euphorbia neriifolia var.cristata are desert plants with superhydrophobic abaxial epidermis of leaves and hydrophobic adaxial epidermis of leaves.Using contact angle meter,SEM and surface tension tester,we tested the superhydrophobicity,observed the surface microstructure and mea-sured the surface adhesion of their leaves.We mimicked the microstructure of the leave's surface through the solvent-evaporation-driven nano-imprint pattern transfer process,using polyvinyl alcohol(PVA) as template and polystyrene(PS) as substrate to acquire a PS film.By studying on the superhydrophobicity,surface microstructure and the surface adhesion of the film,we discovered that superhydrophobic and high-adhesive film can be built by lamellar microstructure with an average protrusion distance of 1—3 μm.

Lotus effect

Euphorbia

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PROGRESS OF RESEARCH ON PROPERTIES AND APPLICATION OF SrTiO 3 BASED ELECTROCERAMIC MATERIAL

Mining and Metallurgy (2001)

Zhang Shi

SrTiO 3 based electroceramics is one of the most excellent electroceramic materials, with low tan δ and good thermal stability. It is widely used in high voltage capacitor, grain boundary layer capacitor, varistor and PTCR. In this paper, the properties, applications and recent progress of SrTiO 3 based electroceramic material in different fields were reviewed.

Electroceramics

Varistor

Thermal Stability

Source

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Notched terahertz Bowtie metamaterials with strongly enhanced near-field and narrowed resonance linewidth

Applied Optics (2019)

Zhang Shi Xupeng Zhu Huimin Shi Yasi Wang Zhiquan Chen

Enhanced near-field and quality factor of resonance are key issues in plasmonic structures. Here, we demonstrate a kind of notched bowtie metamaterials in the terahertz (THz) regime with narrow linewidth and extremely enhanced near field. The notched bowtie is a variation of common bowtie structure created by introducing symmetric notches on the two sides of the triangular metallic structure. Benefiting from the introduction of notches, the modulation depth of transmittance spectra and near-field enhancement of the notched bowtie arrays were strongly enhanced due to the increase of the structure-derived equivalent inductance. The results demonstrated that near-field enhancement can be increased to above 4000. In addition, the designed structure possesses a narrowed resonance linewidth, and thus an improved quality factor, which could be a promising platform for THz sensing and other potential applications of THz metamaterials.

Laser linewidth

Q factor

10.1364/ao.58.006295

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Multispectral Integrated Black Arsenene Phototransistors for High-Resolution Imaging and Enhanced Secure Communication

ACS Nano (2024)

Li Han Zhang Shi Shijian Tian Libo Zhang Yingdong Wei

The demand for broadband, room-temperature infrared, and terahertz (THz) detectors is rapidly increasing owing to crucial applications in telecommunications, security screening, nondestructive testing, and medical diagnostics. Current photodetectors face significant challenges, including high intrinsic dark currents and the necessity for cryogenic cooling, which limit their effectiveness in detecting low-energy photons. Here, we introduce a high-performance ultrabroadband photodetector operating at room temperature based on two-dimensional black arsenene (b-As) nanosheets. This device demonstrates responsivity across visible, near-infrared, and THz spectral ranges, with responsivities reaching 91.6 A/W at 520 nm, 6.3 A/W at 1550 nm, and 7.8 V/W at 0.27 THz. The exceptional THz responsivity is attributed to the use of plasma-wave rectification in antenna-integrated field-effect transistors with asymmetric antennas, enhancing light-matter interaction and facilitating nonlinear rectification within the two-dimensional electron gas of the transistor channel, achieving a voltage-dependent bipolar response. These advanced b-As-based photodetectors also enable secure THz communication through complex logic operations, achieving robust data encryption and high-performance signal processing.

10.1021/acsnano.4c14512

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Semiconductor ceramic capacitors.

Biao Li Zhang Shi

ELECTRONIC COMPONENTS MATERIALS (China), Vol 18, No 6, P 31 33(Dec 1999) In Chinese Introduced are semiconductor ceramic capacitors including general technology, ceramic structure, dielectric property and the differences between them and the capacitors of BaTiO 3. Emphasized are the problems related with DC aging at low voltage, including the causes and their relation with technology. (5 refs.)

Ceramic capacitor

Film capacitor

Filter capacitor

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Enhancement of terahertz response in a microstructure-integrated-type-II Dirac semimetal

AIP Advances (2023)

Xuyang Lv Kaixuan Zhang Mengjie Jiang Zhang Shi Libo Zhang

Terahertz detection technology has been confronted with formidable impediments, notably the paucity of sensitivity and operating temperature for photodetectors based on traditional bulk materials. In an attempt to surmount the difficulties, we propose an innovative terahertz detector based on a PtSe2 (type-II Dirac semimetallic material) integrated asymmetric antenna structure that can enhance the terahertz photoresponse by capitalizing on meticulous fabrication procedures. Experimental outcomes demonstrate the remarkable characteristics of the photodetector in the terahertz band, encompassing fast response time (7 µs), large responsivity (3.267 A/W), and low noise equivalent power (3.96 pW/Hz0.5). These accomplishments can be ascribed to the incorporation of the asymmetric metal contact of the four-leaf clover antenna structure and the excellent thermoelectric characteristics of PtSe2. This pioneering investigation consequently unveils a novel methodology for the creation of proficient PtSe2-based terahertz detectors and serves as a catalyst for the promotion of applications and further research within the terahertz sphere.

Noise-equivalent power

10.1063/5.0175151

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Line integral compressed ultrafast photography for large time scale measurements

Optics Letters (2025)

Chengzhi Jin Jiali Yao Zhengqi Huang Zihan Guo Yu He

10.1364/ol.555245

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