AI Article Synopsis
- A two-dimensional (2D) multispectral imager is developed using nanohole arrays (NHAs) in a gold film to differentiate various colors into distinct spectral bands.
- Each NHA has a unique pattern that allows for varying light transmission properties, enabling the system to capture images across the visible and near-infrared spectrum.
- The imager successfully obtained 2D multispectral images in both reflection and transmission modes, covering specific wavelengths from 662 nm to 832 nm, and has potential applications in various imaging systems.
Article Abstract
We present a two-dimensional (2D) snapshot multispectral imager that utilizes the optical transmission characteristics of nanohole arrays (NHAs) in a gold film to resolve a mixture of input colors into multiple spectral bands. The multispectral device consists of blocks of NHAs, wherein each NHA has a unique periodicity that results in transmission resonances and minima in the visible and near-infrared regions. The multispectral device was illuminated over a wide spectral range, and the transmission was spectrally unmixed using a least-squares estimation algorithm. A NHA-based multispectral imaging system was built and tested in both reflection and transmission modes. The NHA-based multispectral imager was capable of extracting 2D multispectral images representative of four independent bands within the spectral range of 662 nm to 832 nm for a variety of targets. The multispectral device can potentially be integrated into a variety of imaging sensor systems.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3763253 | PMC |
| http://dx.doi.org/10.1038/srep02589 | DOI Listing |
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