Title :
Bioinspired broad-spectrum micro-photocollectors improve sensitivity of image sensors in low-light environment
Author :
Liu, H. ; Huang, Y. ; Jiang, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, WI, USA
Abstract :
This paper reports an imaging system inspired from the eyes of elephantnose fish for the detection of objects in low-light environment. Our bioinspired approach realizes broad-spectrum (wavelength 350 nm ~ 1000 nm) micro-photocollectors onto image sensors to increase their overall sensitivity by more than 3.5 times. The novel fabrication process that creates the micro-photocollectors on curved surfaces can be applied to fabricate other 3D microstructures.
Keywords :
image sensors; microfabrication; microsensors; object detection; photodetectors; 3D microstructure; bioinspired broad-spectrum microphotocollector; elephantnose fish; image sensor; low-light environment; object detection; wavelength 350 nm to 1000 nm; Biomedical imaging; Glass; Image sensors; Resists; Rough surfaces; Surface roughness; Surface treatment; 3D microstructures; Bioinspiration; Femtosecond laser; Imaging system;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2015 Transducers - 2015 18th International Conference on
Conference_Location :
Anchorage, AK
DOI :
10.1109/TRANSDUCERS.2015.7180948
