Haofei Shi
Chinese Academy of Sciences
Terahertz radiationMetamaterialPlasmonOpticsPhysicsDielectricFabricationSurface plasmonSurface plasmon polaritonNanotechnologyElectrodeMaterials sciencePhotodetectorNear and far fieldCondensed matter physicsGrapheneRefractive indexOptoelectronicsChemical vapor depositionAbsorption (electromagnetic radiation)
Publications 89
#1Hao Jiang (University of Electronic Science and Technology of China)H-Index: 2
#2Jintao Fu (CAS: Chinese Academy of Sciences)H-Index: 1
Last. Haofei Shi (CAS: Chinese Academy of Sciences)H-Index: 26
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Abstract null null In this paper, a position-sensitive detector (PSD) with an enhanced position detection performance has been proposed using graphene-silicon-on-insulator (GSOI) structure. By introducing the gate manipulation, the separation efficiency and diffusion speed of the photo-induced charges have been greatly improved. We experimentally observe a 10-fold increase in the generated photocurrent and the response time is shorten by around 8 times, compared to the counterpart without modula...
Highly efficient near- and medium-wave infrared detection at room temperature is considered one of the most intensive studies due to the robust detection under foggy weather or other low visibility conditions. 2D atomic layer graphene has an unconventional broad optical spectrum and high electron or hole mobility properties for next-generation electronic and optoelectronic devices. Single-layer graphene has a lower quantum efficiency, and PbSe has a direct narrow bandgap with a highly sensitive ...
#9Jun Yang (CAS: Chinese Academy of Sciences)H-Index: 23
Flexible pressure sensors have aroused tremendous attention, owing to their broad applications in healthcare, robotics, and prosthetics. So far, it remains a critical challenge to develop low-cost and controllable microstructures for flexible pressure sensors. Herein, a high-sensitivity and low-cost flexible piezoresistive sensor was developed by combining a controllable graphene-nanowalls (GNWs) wrinkle and a polydimethylsiloxane (PDMS) elastomer. For the GNWs-PDMS bilayer, the vertically grown...
1 CitationsSource
#1Yongna Zhang (CAS: Chinese Academy of Sciences)H-Index: 2
#2Deping Huang (CAS: Chinese Academy of Sciences)H-Index: 5
Last. Haofei ShiH-Index: 26
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Batch production of continuous and uniform graphene films is critical for the application of graphene. Chemical vapor deposition (CVD) has shown great promise for mass producing high-quality graphene films. However, the critical factors affected the uniformity of graphene films during the batch production need to be further studied. Herein, we propose a method for batch production of uniform graphene films by controlling the gaseous carbon source to be uniformly distributed near the substrate su...
3 CitationsSource
#2Binbin ZhouH-Index: 18
Last. Peter BøggildH-Index: 49
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1 CitationsSource
#5Jun Yang (CAS: Chinese Academy of Sciences)H-Index: 23
The coupling system with dynamic manipulation characteristics is of great importance for the field of active plasmonics and tunable metamaterials. However, the traditional metal-based architectures suffer from a lack of electrical tunability. In this study, a metamaterial composed of perpendicular or parallel graphene-Al2O3-graphene stacks is proposed and demonstrated, which allows for the electric modulation of both graphene layers simultaneously. The resultant absorption of hybridized modes ca...
1 CitationsSource
#1Hao Wu (HIT: Harbin Institute of Technology)H-Index: 3
An effective approach for general measurement based on weak value amplification using non-Gaussian broadband light sources is demonstrated. This scheme can reduce the difficulty of preparing the measurement apparatus and correcting the systematic error caused by the imperfection of device's wave function, thus making the weak-value amplification scheme more convenient and robust for practical field applications. The influence of several common noise sources in a general application based on weak...
#1Jun Yang (CAS: Chinese Academy of Sciences)H-Index: 23
Silicon/graphene nanowalls (Si/GNWs) heterojunctions with excellent integrability and sensitivity show an increasing potential in optoelectronic devices. However, the performance is greatly limited by inferior interfacial adhesion and week electronic transport caused by the horizontal buffer layer. Herein, a diamond-like carbon (DLC) interlayer is first introduced to construct Si/DLC/GNWs heterojunctions, which can significantly change the growth behavior of the GNWs film, avoiding the formation...
6 CitationsSource
#1Chan Yang (CAS: Chinese Academy of Sciences)
#2Shuanglong Feng (CAS: Chinese Academy of Sciences)H-Index: 17
Last. Haofei Shi (CAS: Chinese Academy of Sciences)H-Index: 26
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1 CitationsSource
#1Jinpeng Nong (Chongqing University)H-Index: 10
#2Linlong Tang (CAS: Chinese Academy of Sciences)H-Index: 13
Last. Wei Wei (Chongqing University)H-Index: 29
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10 CitationsSource