Graphene-Based Infrared Position-Sensitive Detector for Precise Measurements and High-Speed Trajectory Tracking.
Nano Lett
; 19(11): 8132-8137, 2019 11 13.
Article
em En
| MEDLINE
| ID: mdl-31556623
ABSTRACT
Noncontact optical sensing plays an important role in various applications, for example, motion tracking, pilotless automobile, precision machining, and laser radars. A device with features of high resolution, fast response, and safe detection (operation wavelength at infrared (IR)) is highly desired in such applications. Here, a near IR position-sensitive detector constructed by graphene-Ge Schottky heterojunction has been demonstrated. The device shows high responsivity (minimum detectable power of â¼10 nW), excellent spatial resolution (<1 µm), fast response time (â¼µs), and could operate in a wide spectral range (from visible to â¼1600 nm). Applications of precise angle (â¼5 × 10-6 degree) and vibration frequency (up to 10 kHz) measurements, as well as the trajectory tracking of a high-speed infrared target (â¼100 km/h), have been realized based on this device. This work therefore provides a promising route for a high-performance noncontact IR optical sensing system.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Nano Lett
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
China