Spectroscopy system using digital camera as two dimensional detectors for undergraduate student laboratory

Plaipichit, Suwan; Wicharn, Surawut; Buranasiri, Prathan

doi:10.1016/j.matpr.2018.01.030

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…Several low-cost spectrophotometers based on a smartphone camera were proposed for examining atomic spectra in high school and undergraduate laboratories [39], [40]. On the other hand, Hosker [41] constructed a spectrophotometer based on an ambient light sensor.…”

Section: Smartphone-based Spectrophotometers and Infrared Detectorsmentioning

confidence: 99%

Smart scientific instruments based on smartphones: a brief review

Sirisathitkul

Sirisathitkul²

2023

IJECE

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<span>Smartphone has gone beyond a communication hub to be a measurement device itself, thanks to various built-in sensors. This article reviewed achievements in transforming ubiquitous smartphones into cost-effective scientific instruments for educational laboratories, environmental studies, point-of-care diagnostics, home-based health monitoring, and rehabilitation. Magnetic fields were precisely measured by built-in magnetometers, leading to demonstrations for engineering and medical applications. The smartphone-based joint-angle measurement was a viable alternative to traditional goniometers. Characterizations of optical signals captured by cameras led to portable spectrophotometers and colorimeters for both educational and practical uses. Interestingly, smartphones became a platform for high-resolution microscopes and fluorescence microscopes were developed with add-on components. These smart instruments become even more attractive options in the pandemic period with limited facility and laboratory access.</span>

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Section: Smartphone-based Spectrophotometers and Infrared Detectorsmentioning

confidence: 99%

Smart scientific instruments based on smartphones: a brief review

Sirisathitkul

Sirisathitkul²

2023

IJECE

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“…The light, usually coming from a broadband light source, passes through the sample, and is then dispersed into individual wavelengths by the dispersing element. This light is then often focused by lenses [ 4 , 13 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. These optical elements are expensive and have to be arranged accurately for a precise, reproducible measurement.…”

Section: Introductionmentioning

confidence: 99%

Portuino—A Novel Portable Low-Cost Arduino-Based Photo- and Fluorimeter

Nonno

Ulber

2022

Sensors

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A novel portable low-cost Arduino-controlled photo- and fluorimeter for on-site measurements has been developed. The device uses LEDs as a light source and a phototransistor as a light sensor. The circuit is based on the discharge of a capacitor with the photocurrent from the phototransistor. Validation experiments for absorbance measurements were performed by measuring protein concentration using the Bradford method and measuring phosphate ions in water using a commercial test kit. The emission light of the excited fluorescent dyes rhodamine 6G and calcofluor white was measured to validate the usability of the device as a fluorescence photometer. In all validation experiments, similar correlation coefficients and limit of detection could be achieved with the portable photo- and fluorimeter and a laboratory spectrometer and fluorimeter. Real sample analysis was performed, measuring phosphate concentration in freshwater and concentration of green fluorescent protein, extracted from Escherichia coli.

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“…Two basic modes of operation are available. The first mode of operation includes a broadband light source (e.g., white light LEDs, tungsten) and light dispersing elements such as prisms [19,20] and diffraction gratings [21], which are often combined with other optical elements, including lenses [20,[22][23][24][25][26][27][28][29][30][31][32][33][34][35] or light guides [19]. This first mode of operation allows the capture of a complete transmission spectrum, though the optical elements required are expensive and must be aligned accurately.…”

Section: Introductionmentioning

confidence: 99%

Specification and Simplification of Analytical Methods to Determine Wine Color

et al. 2022

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The color of wine is an important quality parameter essential for the first impression of consumers. The International Organization of Vine and Wine (OIV) recommends two methods to describe wine color: color calculation according to Glories and the determination of coordinates in the CIE L*a*b* color space. The measurement of wine color is often not feasible for winemakers because the required instrumentation is expensive and bulky. In this study, the influence of photometer settings on the calculated color was investigated based on 14 wines. Furthermore, the CIE L*a*b* and Glories system were compared using 56 red and 56 white wines. Photometer settings were found to influence the reproducibility of color determination. In addition, CIE L*a*b* system do not correlate in all wines with the Glories system and Glories probably provides less information about wine color. Using interpolation, CIE L*a*b* coordinates were calculated from single wavelength measurements taken by a small-sized and inexpensive portable analysis system, which could be used by winemakers in the future.

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Spectroscopy system using digital camera as two dimensional detectors for undergraduate student laboratory

Cited by 4 publications

References 10 publications

Smart scientific instruments based on smartphones: a brief review

Smart scientific instruments based on smartphones: a brief review

Portuino—A Novel Portable Low-Cost Arduino-Based Photo- and Fluorimeter

Specification and Simplification of Analytical Methods to Determine Wine Color

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