A miniaturized near infrared spectrometer for non-invasive sensing of bio-markers as a wearable healthcare solution

Bae, Jong‐Soo; Druzhin, Vladislav V.; Anikanov, Alexey G.; Afanasyev, S. V.; Shchekin, A. A.; Медведев, А. С.; Morozov, Alexander; Kim, Dongho; Kim, Sang Kyu; Moon, Hee-Sung; Jang, Hyeongseok; Shim, Jina; Park, Jongae

doi:10.1117/12.2256293

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…MCS, due to their miniature size, low cost, and high resolution, can be another sensor equipped into consumer devices such as smartphones, watches, and other wearable devices. Spectroscopy on a cell phone has been previously demonstrated in the visible [208], nearinfrared [209], and Raman [210]. Equipping smartphones with MCS allows users to capture spectral data easily, which can breed a number of new applications.…”

Section: Consumer Devicesmentioning

confidence: 99%

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Review of Miniaturized Computational Spectrometers

Guan,

Lim,

Sun

et al. 2023

Sensors

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Spectrometers are key instruments in diverse fields, notably in medical and biosensing applications. Recent advancements in nanophotonics and computational techniques have contributed to new spectrometer designs characterized by miniaturization and enhanced performance. This paper presents a comprehensive review of miniaturized computational spectrometers (MCS). We examine major MCS designs based on waveguides, random structures, nanowires, photonic crystals, and more. Additionally, we delve into computational methodologies that facilitate their operation, including compressive sensing and deep learning. We also compare various structural models and highlight their unique features. This review also emphasizes the growing applications of MCS in biosensing and consumer electronics and provides a thoughtful perspective on their future potential. Lastly, we discuss potential avenues for future research and applications.

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Section: Consumer Devicesmentioning

confidence: 99%

“…Numerous additional applications exist, although unaddressed within the scope of this discussion. The prospective market size for MCS is projected at approximately 900 million dollars [210]. As applications expand across various domains, it is anticipated that more and more will benefit from MCS.…”

Section: Consumer Devicesmentioning

confidence: 99%

Review of Miniaturized Computational Spectrometers

Guan,

Lim,

Sun

et al. 2023

Sensors

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“…Examples of recent research activity in this field can be provided, for example, refs. [123], [124].…”

Section: Miniaturized Nir Spectroscopy In Practical Applicationsmentioning

confidence: 99%

Principles and Applications of Miniaturized Near‐Infrared (NIR) Spectrometers

Beć

Grabska

Huck

2020

Chemistry A European J

253

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This review article focuses on the principles and applications of miniaturized near‐infrared (NIR) spectrometers. This technology and its applicability has advanced considerably over the last few years and revolutionized several fields of application. What is particularly remarkable is that the applications have a distinctly diverse nature, ranging from agriculture and the food sector, through to materials science, industry and environmental studies. Unlike a rather uniform design of a mature benchtop FTNIR spectrometer, miniaturized instruments employ diverse technological solutions, which have an impact on their operational characteristics. Continuous progress leads to new instruments appearing on the market. The current focus in analytical NIR spectroscopy is on the evaluation of the devices and associated methods, and to systematic characterization of their performance profiles.

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“…Nevertheless, the extensive use of benchtop spectrometers for in situ measurements is severely limited by their bulky sizes, sensitivity to platform vibration, and relatively high power consumption. There is an ever-growing demand for portable, handheld, and even wearable spectrometers in many emerging applications, such as intelligent health monitoring 4 and portable optical coherent tomography 5 . This impetus has led to the rapid development of miniatured spectrometers implemented on metasurfaces 6 , micro-optoelectro-mechanical systems (MOEMS) 7 , and photonic integrated circuits (PIC) [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Breaking the resolution-bandwidth limit of chip-scale spectrometry by harnessing a dispersion-engineered photonic molecule

Qin

et al. 2023

Light Sci Appl

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The chip-scale integration of optical spectrometers may offer new opportunities for in situ bio-chemical analysis, remote sensing, and intelligent health care. The miniaturization of integrated spectrometers faces the challenge of an inherent trade-off between spectral resolutions and working bandwidths. Typically, a high resolution requires long optical paths, which in turn reduces the free-spectral range (FSR). In this paper, we propose and demonstrate a ground-breaking spectrometer design beyond the resolution-bandwidth limit. We tailor the dispersion of mode splitting in a photonic molecule to identify the spectral information at different FSRs. When tuning over a single FSR, each wavelength channel is encoded with a unique scanning trace, which enables the decorrelation over the whole bandwidth spanning multiple FSRs. Fourier analysis reveals that each left singular vector of the transmission matrix is mapped to a unique frequency component of the recorded output signal with a high sideband suppression ratio. Thus, unknown input spectra can be retrieved by solving a linear inverse problem with iterative optimizations. Experimental results demonstrate that this approach can resolve any arbitrary spectra with discrete, continuous, or hybrid features. An ultrahigh resolution of <40 pm is achieved throughout an ultrabroad bandwidth of >100 nm far exceeding the narrow FSR. An ultralarge wavelength-channel capacity of 2501 is supported by a single spatial channel within an ultrasmall footprint (≈60 × 60 μm2), which represents, to the best of our knowledge, the highest channel-to-footprint ratio (≈0.69 μm−2) and spectral-to-spatial ratio (>2501) ever demonstrated to date.

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A miniaturized near infrared spectrometer for non-invasive sensing of bio-markers as a wearable healthcare solution

Cited by 4 publications

References 2 publications

Review of Miniaturized Computational Spectrometers

Review of Miniaturized Computational Spectrometers

Principles and Applications of Miniaturized Near‐Infrared (NIR) Spectrometers

Breaking the resolution-bandwidth limit of chip-scale spectrometry by harnessing a dispersion-engineered photonic molecule

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