Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Raman Spectroscopy Instrumentation: Overview

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...

Spectrophotometry: Introduction

Spectrophotometry: Introduction

Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...

UV–Vis Spectrometers

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.

IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Eczema Herpeticum Following Topical Ruxolitinib Use: A Report of Two Cases.

Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology·2026

Same author

Reproductive Performance in Dairy Cattle: Determinants of Conception Rate and Economic Consequences in Bangladesh.

Reproduction in domestic animals = Zuchthygiene·2026

Same author

Meat quality assessment at different slaughter weights of broilers sold in the retail market of Dhaka City, Bangladesh: An integrated approach.

Journal of advanced veterinary and animal research·2026

Same author

Relationship Between Rectal Temperature and Infrared Temperatures of a Goat's External Body Surfaces.

Animals : an open access journal from MDPI·2026

Same author

Performance optimization and machine learning-guided parameter sensitivity analysis of lead-free KGeCl<sub>3</sub> perovskite solar cells.

RSC advances·2026

Same author

Thermogenesis in Adipose Tissue: Adrenergic and Non-Adrenergic Pathways.

Cells·2026

Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026

Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026

Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026

Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026

Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026

Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Mar 21, 2026

Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis

Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis

Published on: October 17, 2016

Optical fiber smartphone spectrometer.

Md Arafat Hossain, John Canning, Kevin Cook

|May 14, 2016

Summary

This summary is machine-generated.

This study presents a novel smartphone spectrometer using an endoscope for consistent illumination. The device enables easy analysis of agricultural produce, like detecting pigment changes in apples over storage time.

More Related Videos

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Related Experiment Videos

Last Updated: Mar 21, 2026

Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis

Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis

Published on: October 17, 2016

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Area of Science:

Optics and Photonics
Spectroscopy
Agricultural Science

Background:

Smartphone-based spectrometers offer portable analytical solutions.
Controlling illumination is crucial for accurate spectral measurements.
Endoscopic fiber bundles can enhance light delivery and collection in portable devices.

Purpose of the Study:

To demonstrate an optical fiber-based smartphone spectrometer.
To utilize an endoscopic fiber bundle for controlled sample illumination.
To assess the instrument's potential in agricultural applications.

Main Methods:

An endoscope transmitted smartphone LED light to the sample, minimizing background light interference.
Reflected spectra were dispersed onto the smartphone's CMOS camera using a reflecting diffraction grating.
Spectral resolution of ~2.0 nm over a 250 nm bandwidth was achieved with a 0.7 mm slit width.

Main Results:

The developed spectrometer successfully measured pigments in apples, including anthocyanins, carotenoid, and chlorophyll.
A decrease in these pigments correlated with increased apple storage time.
The instrument demonstrated straightforward spectral analysis capabilities for agricultural produce.

Conclusions:

The endoscope-equipped smartphone spectrometer provides a robust platform for portable spectral analysis.
This technology shows significant potential for industrial applications, particularly in agricultural produce quality assessment.
The ability to monitor pigment degradation offers insights into food quality and shelf-life.