Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness
We demonstrate a smartphone based spectrometer design that is standalone and supported on a wireless platform. The device is inherently low-cost and the power consumption is minimal making it portable to carry out a range of studies in the field. All essential components of the device like the light...
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2017
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| Online Access: | http://hdl.handle.net/1721.1/108073 https://orcid.org/0000-0001-6142-6265 https://orcid.org/0000-0002-3254-3224 |
| _version_ | 1826202105758613504 |
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| author | Wahi, Akshat Kothari, Ishan Das, Anshuman Jyothi Raskar, Ramesh |
| author2 | Massachusetts Institute of Technology. Media Laboratory |
| author_facet | Massachusetts Institute of Technology. Media Laboratory Wahi, Akshat Kothari, Ishan Das, Anshuman Jyothi Raskar, Ramesh |
| author_sort | Wahi, Akshat |
| collection | MIT |
| description | We demonstrate a smartphone based spectrometer design that is standalone and supported on a wireless platform. The device is inherently low-cost and the power consumption is minimal making it portable to carry out a range of studies in the field. All essential components of the device like the light source, spectrometer, filters, microcontroller and wireless circuits have been assembled in a housing of dimensions 88 mm × 37 mm × 22 mm and the entire device weighs 48 g. The resolution of the spectrometer is 15 nm, delivering accurate and repeatable measurements. The device has a dedicated app interface on the smartphone to communicate, receive, plot and analyze spectral data. The performance of the smartphone spectrometer is comparable to existing bench-top spectrometers in terms of stability and wavelength resolution. Validations of the device were carried out by demonstrating non-destructive ripeness testing in fruit samples. Ultra-Violet (UV) fluorescence from Chlorophyll present in the skin was measured across various apple varieties during the ripening process and correlated with destructive firmness tests. A satisfactory agreement was observed between ripeness and fluorescence signals. This demonstration is a step towards possible consumer, bio-sensing and diagnostic applications that can be carried out in a rapid manner. |
| first_indexed | 2024-09-23T12:01:57Z |
| format | Article |
| id | mit-1721.1/108073 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:01:57Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1080732022-09-27T23:39:46Z Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness Wahi, Akshat Kothari, Ishan Das, Anshuman Jyothi Raskar, Ramesh Massachusetts Institute of Technology. Media Laboratory Program in Media Arts and Sciences (Massachusetts Institute of Technology) Das, Anshuman Jyothi Raskar, Ramesh We demonstrate a smartphone based spectrometer design that is standalone and supported on a wireless platform. The device is inherently low-cost and the power consumption is minimal making it portable to carry out a range of studies in the field. All essential components of the device like the light source, spectrometer, filters, microcontroller and wireless circuits have been assembled in a housing of dimensions 88 mm × 37 mm × 22 mm and the entire device weighs 48 g. The resolution of the spectrometer is 15 nm, delivering accurate and repeatable measurements. The device has a dedicated app interface on the smartphone to communicate, receive, plot and analyze spectral data. The performance of the smartphone spectrometer is comparable to existing bench-top spectrometers in terms of stability and wavelength resolution. Validations of the device were carried out by demonstrating non-destructive ripeness testing in fruit samples. Ultra-Violet (UV) fluorescence from Chlorophyll present in the skin was measured across various apple varieties during the ripening process and correlated with destructive firmness tests. A satisfactory agreement was observed between ripeness and fluorescence signals. This demonstration is a step towards possible consumer, bio-sensing and diagnostic applications that can be carried out in a rapid manner. Massachusetts Institute of Technology. Tata Center for Technology and Design Tata Trusts 2017-04-12T16:27:19Z 2017-04-12T16:27:19Z 2016-09 2016-04 Article http://purl.org/eprint/type/JournalArticle 2045-2322 http://hdl.handle.net/1721.1/108073 Das, Anshuman J., Akshat Wahi, Ishan Kothari, and Ramesh Raskar. “Ultra-Portable, Wireless Smartphone Spectrometer for Rapid, Non-Destructive Testing of Fruit Ripeness.” Scientific Reports 6 (September 8, 2016): 32504. © 2016 Macmillan Publishers Limited, part of Springer Nature. https://orcid.org/0000-0001-6142-6265 https://orcid.org/0000-0002-3254-3224 en_US http://dx.doi.org/10.1038/srep32504 Scientific Reports Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | Wahi, Akshat Kothari, Ishan Das, Anshuman Jyothi Raskar, Ramesh Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness |
| title | Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness |
| title_full | Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness |
| title_fullStr | Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness |
| title_full_unstemmed | Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness |
| title_short | Ultra-portable, wireless smartphone spectrometer for rapid, non-destructive testing of fruit ripeness |
| title_sort | ultra portable wireless smartphone spectrometer for rapid non destructive testing of fruit ripeness |
| url | http://hdl.handle.net/1721.1/108073 https://orcid.org/0000-0001-6142-6265 https://orcid.org/0000-0002-3254-3224 |
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