Richard A. Crocombe, "Handheld spectrometers in 2018 and beyond: MOEMS, photonics, and smartphones", Proc. SPIE 10545, MOEMS and Miniaturized Systems XVII, 105450C (22 February 2018); doi: 10.1117/12.2286492.
This paper outlines the portable spectrometer field, and discusses databases, calibrations and algorithms, and also caveats on crowd-sourced data, especially for heterogeneous samples.
Richard A. Crocombe, “Handheld spectrometers: the state of the art”, in “Next-Generation Spectroscopic Technologies VI”, SPIE Proceedings, Vol. 8726, 87260R-1 – 87260R-14 (2013).
The challenge over the last dozen years, as instruments have moved into the field, has been to make spectrometers smaller, affordable, rugged, easy-to-use, but most of all capable of delivering actionable results, which can dramatically improve the efficiency of a testing process and transform the way business is done.
Richard A. Crocombe, “Miniature Optical Spectrometers: The Art of the Possible. Part IV: New Near-Infrared Technologies and Spectrometers”, Spectroscopy, 23(6), 26-37 (2008).
In Part IV, we see how the massive investment in telecommunications, micro-electro-mechanical systems (MEMS), and micro-opto-electro-mechanical systems (MOEMS) is starting to impact NIR spectroscopy.
Richard A. Crocombe, “Miniature Optical Spectrometers: Part III: Conventional and Laboratory Near-Infrared Spectrometers”, Spectroscopy, 23(5), 40-50 (2008).
In Part III, we summarize some of the conventional approaches to miniaturizing near-infrared (NIR) spectrometers.
Richard A. Crocombe, “Miniature Optical Spectrometers: Follow The Money. Part II: The Telecommunications Boom”, Spectroscopy, 23(2), 56-69 (2008).
We examine the technologies developed during the telecommunications boom of the late 1990s, focusing on miniaturized optical techniques generally called micro-opto-electro-mechanical systems (MOEMS). Some of these technologies only began to be applied to spectroscopy a few years ago, and we have yet to see their full impact.
Richard A. Crocombe, “Miniature Optical Spectrometers: There’s Plenty of Room at the Bottom. Part 1, Background and Mid-Infrared Spectrometers”, Spectroscopy, 23(1), 38-56 (2008).
Optical spectrometers employing devices based upon photonic and micro electro mechanical systems (MEMS) technologies are described here. We can anticipate that there will be rapid growth in the number of miniature spectrometers and their applications because, as Feynman noted in his celebrated talk, there's "plenty of room at the bottom".
