Park, HyunsungCrozier, Kenneth B.2014-03-012013Park, Hyunsung, and Kenneth B. Crozier. 2013. “Multispectral imaging with vertical silicon nanowires.” Scientific Reports 3 (1): 2460. doi:10.1038/srep02460. http://dx.doi.org/10.1038/srep02460.2045-2322http://nrs.harvard.edu/urn-3:HUL.InstRepos:11855776Multispectral imaging is a powerful tool that extends the capabilities of the human eye. However, multispectral imaging systems generally are expensive and bulky, and multiple exposures are needed. Here, we report the demonstration of a compact multispectral imaging system that uses vertical silicon nanowires to realize a filter array. Multiple filter functions covering visible to near-infrared (NIR) wavelengths are simultaneously defined in a single lithography step using a single material (silicon). Nanowires are then etched and embedded into polydimethylsiloxane (PDMS), thereby realizing a device with eight filter functions. By attaching it to a monochrome silicon image sensor, we successfully realize an all-silicon multispectral imaging system. We demonstrate visible and NIR imaging. We show that the latter is highly sensitive to vegetation and furthermore enables imaging through objects opaque to the eye.en-USJournal Article2014-03-0110.1038/srep02460