期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Simulating the obstacle avoidance behavior day and night based on the visible-infrared MoS_(2)/Ge heterojunction field-effect phototransistor
1
作者 Zhao Han Bo Wang +11 位作者 Jie You Qiancui Zhang Yichi Zhang Tian Miao Ningning Zhang Dongdong Lin Zuimin Jiang Renxu Jia Jincheng Zhang Hui Guo Huiyong Hu Liming Wang 《Nano Research》 SCIE EI CSCD 2023年第8期11296-11302,共7页
The contradiction between the high number of visually handicapped people and the scarcity of guide dogs has stimulated the demand for electronic guide dogs(EGDs).Here,we demonstrate an EGD by leveraging piezoresistors... The contradiction between the high number of visually handicapped people and the scarcity of guide dogs has stimulated the demand for electronic guide dogs(EGDs).Here,we demonstrate an EGD by leveraging piezoresistors on a MoS_(2)/Ge heterostructure for simultaneous pressure-sensing and optical-sensing functions.The device has excellent gating capability and exhibits large positive and negative photoresponses under visible(532 nm,182 A/W)and infrared(1550 nm,37 A/W)illumination.These characteristics allow the device to efficiently classify different obstacles at all times of day using pressure and light signals.The device reaches nearly 100%accuracy after 48 training sessions when used to classify frequent scenes.The device adopts passive and active detection modes during the day and night,respectively,which improves the battery life of the EGD.This work provides a significant reference for the future design of EGDs,which may help a greater number of visually impaired people by reducing the cost of such devices. 展开更多
关键词 electronic guide dogs dual-band photodetection pressure and light synergy work round the clock
原文传递
Sensitive detection of infrared photons using a high-Q microcantilever 被引量:1
2
作者 张逢新 朱银芳 +1 位作者 杨晋玲 曹立新 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2011年第9期66-69,共4页
A new approach based on microcantilevers is presented to detect infrared photons with high sensitivity. Infrared photons are measured by monitoring the amplitude change of a vibrating microcantilever under light press... A new approach based on microcantilevers is presented to detect infrared photons with high sensitivity. Infrared photons are measured by monitoring the amplitude change of a vibrating microcantilever under light pressure force.The irradiating light is modulated into sinusoidal and pulsed waves,and to be in-phase and anti-phase with the cantilever driving signal.A linear relationship between the amplitude change of the cantilever and the light power distributing on the cantilever was observed.Under a vacuum of 10^(-4) Pa,an infrared light power of 7.4 nW was detected with the cantilever.The in-phase and anti-phase modulation to the cantilever vibration using a pulsed light results in an enhanced response of the cantilever. 展开更多
关键词 infrared photon detection light pressure force CANTILEVER
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部