[1] D. Lupton. The digitally engaged patient: self-monitoring and self-care in the digital health era. Social Theory Health, 11, 256-270(2013).

[2] A. Pantelopoulos, N. G. Bourbakis. A survey on wearable sensor-based systems for health monitoring and prognosis. IEEE Trans. Syst., Man, Cybern., Part C (Appl. Rev.), 40, 1-12(2009).

[3] A. K. Amerov et al. Scattering and absorption effects in the determination of glucose in whole blood by near-infrared spectroscopy. Anal. Chem., 77, 4587-4594(2005).

[4] I. Yusoff et al. Non invasive cholesterol meter using near infrared sensor, 100-104(2015).

[5] D. D. Cunningham, J. A. Stenken. In Vivo Glucose Sensing(2009).

[6] A. K. Amerov et al. The influence of glucose upon the transport of light through the whole blood. Proc. SPIE, 5330, 101-111(2004).

[7] J. M. Hollas. Modern Spectroscopy(2004).

[8] U. Dahlstrand et al. Extended-wavelength diffuse reflectance spectroscopy with a machine-learning method for in vivo tissue classification. PLoS One, 14, e0223682(2019).

[9] K. B. Beć, J. Grabska, C. W. Huck. Miniaturized NIR spectroscopy in food analysis and quality control: promises, challenges, and perspectives. Foods, 11, 1465(2022).

[10] B. G. Barthès et al. Performance comparison between a miniaturized and a conventional near infrared reflectance (NIR) spectrometer for characterizing soil carbon and nitrogen. Geoderma, 338, 422-429(2019).

[11] M. Rani et al. Miniaturized near-infrared (MicroNIR) spectrometer in plastic waste sorting. Materials, 12, 2740(2019).

[12] T. S. Yeh, S. S. Tseng. A low cost LED based spectrometer. J. Chin. Chem. Soc., 53, 1067-1072(2006).

[13] Z. Yang et al. Miniaturization of optical spectrometers. Science, 371, eabe0722(2021).

[14] K. B. Beć et al. Handheld near-infrared spectrometers: where are we heading?. NIR News, 31, 28-35(2020).

[15] J. Zhang et al. Cascaded nanobeam spectrometer with high resolution and scalability. Optica, 9, 517-521(2022).

[16] G. Y. Belay et al. Miniaturized broadband spectrometer based on a three-segment diffraction grating for spectral tissue sensing. Opt. Lasers Eng., 134, 106157(2020).

[17] F. Kneubühl. Diffraction grating spectroscopy. Appl. Opt., 8, 505-519(1969).

[18] M. Dami et al. Ultra compact spectrometer using linear variable filters. Proc. SPIE, 10565, 1056559(2018).

[19] J. Ekkers, W. Flygare. Pulsed microwave Fourier transform spectrometer. Rev. Sci. Instrum., 47, 448-454(1976).

[20] J. Xiong et al. Dynamic brain spectrum acquired by a real-time ultraspectral imaging chip with reconfigurable metasurfaces. Optica, 9, 461-468(2022).

[21] V. Saptari, K. Youcef-Toumi. Design of a mechanical-tunable filter spectrometer for noninvasive glucose measurement. Appl. Opt., 43, 2680-2688(2004).

[22] N. A. O’Brien et al. Miniature near-infrared (NIR) spectrometer engine for handheld applications. Proc. SPIE, 8374, 837404(2012).

[23] B. Wiesent, D. Dorigo, A. Koch. 3.3-A miniaturized MID-IR-spectrometer based on a linear variable filter and pyroelectric line array–monitoring oil condition, 59-64(2013).

[24] A. Emadi et al. Design and implementation of a sub-nm resolution microspectrometer based on a linear-variable optical filter. Opt. Express, 20, 489-507(2012).

[25] B. R. Wiesent, D. G. Dorigo, A. W. Koch. Limits of IR-spectrometers based on linear variable filters and detector arrays. Proc. SPIE, 7767, 77670L(2010).

[26] L. Zhang et al. Miniature spectrometer based on linear variable interference filters. Proc. SPIE, 3855, 42-50(1999).

[27] T. Westover et al. Visible and short-wavelength infrared light collimation through carbon nanotube, parallel-hole collimators. Opt. Express, 30, 22679-22686(2022).

[28] K. Laughlin, R. R. Vanfleet, R. C. Davis. Mechanically robust vertically aligned carbon nanotube composites for applications in ultralow reflectance optical elements. ACS Appl. Nano Mater., 5, 6989-6994(2022).

[29] G. Chen et al. Fabrication of high aspect ratio millimeter-tall free-standing carbon nanotube-based microelectrode arrays. ACS Biomater. Sci. Eng., 4, 1900-1907(2018).

[30] W. C. Fazio et al. Material properties of carbon-infiltrated carbon nanotube-templated structures for microfabrication of compliant mechanisms(2011).

[31] Z. A. Westhoff. Microcontroller-Integrated Miniature Infrared Spectrometer for Noninvasive Sensing of Physiological Signals(2021).

[32] A. Kenda et al. Development, characterization and application of compact spectrometers based on MEMS with in-plane capacitive drives. Proc. SPIE, 9101, 910102(2014).

[33] M. Ware, J. Peatross. Physics of Light and Optics(2015).