Multichannel Smartphone Spectrometer Using Combined Diffraction Orders

Biswas, PC; Rani, S; Hossain, MA; Islam, MR; Canning, J

Multichannel Smartphone Spectrometer Using Combined Diffraction Orders

Biswas, PC Rani, S Hossain, MA Islam, MR Canning, J

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Publisher:: Institute of Electrical and Electronics Engineers (IEEE)
Publication Type:: Journal Article
Citation:: IEEE Sensors Letters, 2020, 4, (9), pp. 1-4
Issue Date:: 2020-09-01

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Field	Value	Language
dc.contributor.author	Biswas, PC
dc.contributor.author	Rani, S
dc.contributor.author	Hossain, MA
dc.contributor.author	Islam, MR
dc.contributor.author	Canning, J https://orcid.org/0000-0001-8281-7783
dc.date.accessioned	2021-03-07T21:58:17Z
dc.date.available	2021-03-07T21:58:17Z
dc.date.issued	2020-09-01
dc.identifier.citation	IEEE Sensors Letters, 2020, 4, (9), pp. 1-4
dc.identifier.issn	2475-1472
dc.identifier.issn	2475-1472
dc.identifier.uri	http://hdl.handle.net/10453/146873
dc.description.abstract	© 2017 IEEE. A robust multichannel smartphone spectrometer exploiting multiorder diffraction imaging on a smartphone camera is reported. The instrument utilizes a thin film diffractive element generating multiple orders of diffracted light from a broadband visible source (white LED, λ = 400-700 nm). The smartphone's CMOS camera captures all the diffraction orders simultaneously, producing a 2-D image. Each of these diffraction orders can be utilized as a single optical channel for dedicated samples enabling simultaneous multiple sample analysis. The wavelength distribution along the diffraction direction produces a tunable spectral resolution of δλ ∼1.6 to 3.0 nm/pixel over the bandwidth of Δλ = 300 nm. A customized app processes each diffraction image into spectra. 3-D printing is used to create the entire instrument prototype. As an initial demonstration, simultaneous absorption measurements of reference and sample cells using the first diffraction orders (m = +1 and -1) is shown. Absorption spectra for a laser dye (Rhodamine B) and a pH-responsive buffer (bromothymol blue) are measured. This offers a low cost (<30) portable instrument layout comparable to conventional double beam benchtop instruments in performance but more rugged for field use.
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartof	IEEE Sensors Letters
dc.relation.isbasedon	10.1109/LSENS.2020.3015590
dc.rights	© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Multichannel Smartphone Spectrometer Using Combined Diffraction Orders
dc.type	Journal Article
utslib.citation.volume	4
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2021-03-07T21:58:16Z
pubs.issue	9
pubs.publication-status	Published
pubs.volume	4
utslib.citation.issue	9

Abstract:

© 2017 IEEE. A robust multichannel smartphone spectrometer exploiting multiorder diffraction imaging on a smartphone camera is reported. The instrument utilizes a thin film diffractive element generating multiple orders of diffracted light from a broadband visible source (white LED, λ = 400-700 nm). The smartphone's CMOS camera captures all the diffraction orders simultaneously, producing a 2-D image. Each of these diffraction orders can be utilized as a single optical channel for dedicated samples enabling simultaneous multiple sample analysis. The wavelength distribution along the diffraction direction produces a tunable spectral resolution of δλ ∼1.6 to 3.0 nm/pixel over the bandwidth of Δλ = 300 nm. A customized app processes each diffraction image into spectra. 3-D printing is used to create the entire instrument prototype. As an initial demonstration, simultaneous absorption measurements of reference and sample cells using the first diffraction orders (m = +1 and -1) is shown. Absorption spectra for a laser dye (Rhodamine B) and a pH-responsive buffer (bromothymol blue) are measured. This offers a low cost (<30) portable instrument layout comparable to conventional double beam benchtop instruments in performance but more rugged for field use.

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http://hdl.handle.net/10453/146873