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Minimizing Device-to-Device Variation in the Spectral Response of Portable Spectrometers
2019
Journal of Sensors
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Experimental results show that the proposed method can minimize the device-to-device variation in spectral response of portable spectrometers. ...
The device-to-device variation in the spectral response of portable spectrometers is a critical issue in a machine learning-based service scenario since the classification performance is highly dependent ...
Acknowledgments This work was supported by the Institute for Information and communications Technology Promotion (IITP) grant funded by the Korea Government (MSIT) (No. 2016-0-00080, Germanium on silicon ...
doi:10.1155/2019/8392583
fatcat:ulcnlr6w6ncm7gadt2zpvi7e2u
Evaluation of Salmon, Tuna, and Beef Freshness Using a Portable Spectrometer
2020
Sensors
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In addition, a CNN-based machine learning algorithm with a shift-invariant feature can minimize the effect of the variation caused using multiple devices in a real environment. ...
In this study, we demonstrated a system to determine food freshness by analyzing the spectral response from a portable visible/near-infrared (VIS/NIR) spectrometer using the Convolutional Neural Network ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/s20154299
pmid:32752216
fatcat:ksalcyyyebg2hkzu54heuubixe
Holographic planar lightwave circuit for on-chip spectroscopy
2014
Light: Science & Applications
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While maintaining the total device footprint below 2 cm 2 , the newly developed spectrometer achieved a spectral resolution of 0.15 nm in the red and near infrared range, over a 148 nm spectral range and ...
Here, we demonstrate that the integration of multiple holograms on a single device increases the overall spectral range of the spectrometer and offsets any performance decrement resulting from miniaturization ...
Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the United States Department of Energy under contract DEAC02-05CH11231. ...
doi:10.1038/lsa.2014.84
fatcat:kp5e2cfc4ffvdamt52f7wq2ycq
Low-Cost Hyperspectral Imaging with A Smartphone
2021
Journal of Imaging
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Recent advances in smartphone technologies have opened the door to the development of accessible, highly portable sensing tools capable of accurate and reliable data collection in a range of environmental ...
To the best of our knowledge, this represents the first smartphone capable of hyperspectral data collection without the need for extensive post processing. ...
McGonigle acknowledges support from the Rolex Institute.
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/jimaging7080136
pmid:34460772
fatcat:4z3y5nv5dbbytmmjtd6y7xmena
Single-nanowire spectrometers
2019
Science
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Spectrometers with ever-smaller footprints are sought after for a wide range of applications in which minimized size and weight are paramount, including emerging in situ characterization techniques. ...
Our devices are capable of accurate, visible-range monochromatic and broadband light reconstruction, as well as spectral imaging from centimeter-scale focal planes down to lensless, single-cell–scale in ...
Girish Rughoobur and Xingyi Wu for use of probe station. ...
doi:10.1126/science.aax8814
pmid:31488686
fatcat:db3aautdfrbubb4ghi5aqzk5ce
Express: Evaluating Low Cost Optical Spectrometers for the Detection of Simulated Substandard and Falsified Medicines
2019
Applied Spectroscopy
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Portable, nondestructive screening devices can support regulatory authorities in their defense against the spread of SF medicines. ...
In the formulation accuracy tests, data from all devices, other than the silicon photodiode array NIR spectrometer, were able to create regression models with less than 6% error. ...
Acknowledgments The authors thank Kris Natarajan of Global Good for his help in reviewing the manuscript. ...
doi:10.1177/0003702819877422
pmid:31617368
pmcid:PMC7066480
fatcat:bcnlbwgss5a6hdmcrrsd6n2h2m
A Multi-Source Portable Light Emitting Diode Spectrofluorometer
2008
Applied Spectroscopy
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Excitation using a sequence of seven individual broad-band LED emission sources enabled the generation of excitationemission spectra using a light weight (,1.5 kg) spectrometer. ...
Application of multi-way principal component analysis (MPCA) to the resulting three-dimensional data sets enabled discernment among these various diet constituents. ...
A.D.P. also acknowledges the financial assistance of the USDA-ARS Workforce Program for College Students with Disabilities. ...
doi:10.1366/000370208783759722
pmid:18339242
fatcat:fqs226uo6rfhbfvwsmtrugchbi
Portable IoT NIR Spectrometer for Detecting Undesirable Substances in Forages of Dairy Farms
2019
2019 International Conference on Sensing and Instrumentation in IoT Era (ISSI)
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Through the Internet of Things (IoT) tools, data are sent to the cloud for processing while being accessible for any device. ...
Food security and the agriculture sustainable development are two important challenges that arise in the Common Agricultural Policy (CAP) of the European Union. ...
The most common sources of light are still tungsten lamps, while in the case of detectors, portable devices are usually used from charge-coupled devices with diffraction gratings to arrays of photodiodes ...
doi:10.1109/issi47111.2019.9043656
fatcat:3rvxhpckxnanpdns2tx4fwigpe
Adapting Raman Spectra from Laboratory Spectrometers to Portable Detection Libraries
2013
Applied Spectroscopy
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The steps taken to adapt for device-dependent spectral resolution, wavenumber shifts between instruments, and relative intensity response are described. ...
Effects due to the differing excitation laser wavelengths were found to be minimal, indicating-at least for the near-infrared (NIR)-that data can be ported between different systems, so long as certain ...
Brauer is supported in part by an appointment to the Transportation Security Laboratory Visiting Science Program administered by the Oak Ridge Institute for Science and Education (ORISE) through an interagency ...
doi:10.1366/12-06759
pmid:23622433
fatcat:qqwignycufcfpkipo6d2ikzmg4
A Compact Detection Platform Based on Gradient Guided-Mode Resonance for Colorimetric and Fluorescence Liquid Assay Detection
2021
Sensors
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The results of our system exhibited suitable agreement with those of a commercial spectrometer in terms of the assay sensitivity and limit of detection (LOD). ...
In its current form, the GGP-GMR filter, which has a size of less than 2.5 mm, can achieve a spectral detection range of 500–700 nm. ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/s21082797
pmid:33921116
fatcat:jcvbho7m4naclgoptvdqnxtn6q
A MEMS based visible-NIR Fourier transform microspectrometer
2006
MEMS, MOEMS, and Micromachining II
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The vertical comb actuators have a travel range of 100µm under atmospheric pressure with 28V excitation, which yields a theoretical spectral resolution of 0.5nm in the visible and better than 5nm in the ...
The spectrometer utilizes resonant mode vertical comb actuators as a variable-depth diffraction grating and a single photodetector to monitor the 0th order of the diffraction pattern. ...
ACKNOWLEDGEMENTS The authors would like to thank Dr. Harald Schenk for sharing his experience on microspectrometers, and to Zeljko Skokic for his help on the mask design. ...
doi:10.1117/12.664781
fatcat:fpflauzxcne4nbvz7qp5xiw2qy
Application of Infrared and Raman Spectroscopy for the Identification of Disease Resistant Trees
2016
Frontiers in Plant Science
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Within the context of trees and tree diseases, we summarize vibrational spectroscopic and chemometric methods that have been used to distinguish between groups of trees which vary in disease susceptibility ...
We also provide specific examples from the literature of where these approaches have been used successfully. ...
Luis Rodriguez-Saona for pre-submission reviews, and two reviewers of the first submission for providing constructive feedback that led to significant improvements in the quality of the document. ...
doi:10.3389/fpls.2015.01152
pmid:26779211
pmcid:PMC4703757
fatcat:gwlsym2spvaczf5rywnn2v6kr4
An electronic portable device design to spectroscopically assess fruit quality
2017
Turkish Journal of Electrical Engineering and Computer Sciences
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Our device operates in 400 to 1100 nm range (blue, green, red, and NIR). ...
As a rapid and non-destructive sensing technique, reflection spectroscopy is useful in monitoring and managing horticultural production, that is, ripening of fruits and vegetables may be evaluated using ...
Acknowledgement We are grateful to Ateş PARLAR and Oğuzhan KAFALI for their invaluable support to use Lambda 900 Spectrophotometer (covering UV, Vis and NIR wavelength ranges) in their research laboratory ...
doi:10.3906/elk-1610-12
fatcat:akx5ciydprbaviv4fpstci47tu
A Low-cost and Portable Near-infrared Spectrometer using Open-source Multivariate Data Analysis Software for Rapid Discriminatory Quality Assessment of Medroxyprogesterone Acetate Injectables
2021
Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy
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field portable device is suitable for rapidly assessing samples in resource limited areas for consistency of manufacturing and sourcing. ...
The handheld device paired with open-source software resulted in a product discrimination accuracy of 100% (verified by benchtop UV-VIS-NIR and chemical testing data) as well indicating that the low-cost ...
It was found that the DMPA vials should be scanned as close to vortexing as possible to minimize variation in the spectra. ...
doi:10.1016/j.saa.2021.119917
pmid:33991812
fatcat:6xtd7tsnmrabxap732jvhaszze
Feasibility study into the use of a micro-machined grating spectrometer to measure fat and protein content in liquid milk products
1999
Sensors and Actuators A-Physical
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Using Beers-Lambert law, spectral absorption changes due to protein and fat variation in dairy samples are obtained, over the spectral region 800 to 1100 nm. ...
A study was undertaken to determine the feasibility of building a system capable of measuring the protein and fat content in dairy based samples. The system would be based upon a micro-spectrometer. ...
The objective of this exercise was to qualify and quantify the extent of spectral change caused by the variation in temperature. ...
doi:10.1016/s0924-4247(99)00190-9
fatcat:jji2enfodvg7xdvk36mo6mhmtm
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