Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

UV–Vis Spectrometers01:14

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. Samples for...

You might also read

Related Articles

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

Sort by
Same author

Direct Shear Stress Mapping Using a Gallium Nitride LED-Based Tactile Sensor.

Micromachines·2023
Same author

Miniaturizing a Chip-Scale Spectrometer Using Local Strain Engineering and Total-Variation Regularized Reconstruction.

Nano letters·2022
Same author

Ultrathin Optics-Free Spectrometer with Monolithically Integrated LED Excitation.

Micromachines·2022
Same author

Ultrathin Tactile Sensors with Directional Sensitivity and a High Spatial Resolution.

Nano letters·2021
Same author

Feasibility study of nanopillar LED array for color-tunable lighting and beyond.

Optics express·2019

Related Experiment Video

Updated: Jul 22, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
12:08

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

10.9K

Designing an Ultrathin Film Spectrometer Based on III-Nitride Light-Absorbing Nanostructures.

Juhyeon Kim1, Srinivasa Cheekati1, Tuba Sarwar1

  • 1Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Ave, Ann Arbor, MI 48109, USA.

Micromachines
|July 2, 2021
PubMed
Summary

This study presents an ultrathin spectrometer using local strain engineering in III-nitride semiconductors. The design achieves high light-harvesting efficiency for improved spectral reconstruction accuracy.

Keywords:
compressive sensinggallium nitridequantum confined Stark effectstrain control

More Related Videos

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

9.9K
Graphene-Assisted Quasi-van der Waals Epitaxy of AlN Film on Nano-Patterned Sapphire Substrate for Ultraviolet Light Emitting Diodes
07:00

Graphene-Assisted Quasi-van der Waals Epitaxy of AlN Film on Nano-Patterned Sapphire Substrate for Ultraviolet Light Emitting Diodes

Published on: June 25, 2020

7.4K

Related Experiment Videos

Last Updated: Jul 22, 2026

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
12:08

Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

Published on: July 18, 2015

10.9K
Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers
10:19

Solution-Processed "Silver-Bismuth-Iodine" Ternary Thin Films for Lead-Free Photovoltaic Absorbers

Published on: September 27, 2018

9.9K
Graphene-Assisted Quasi-van der Waals Epitaxy of AlN Film on Nano-Patterned Sapphire Substrate for Ultraviolet Light Emitting Diodes
07:00

Graphene-Assisted Quasi-van der Waals Epitaxy of AlN Film on Nano-Patterned Sapphire Substrate for Ultraviolet Light Emitting Diodes

Published on: June 25, 2020

7.4K

Area of Science:

  • Optoelectronics
  • Materials Science
  • Nanotechnology

Background:

  • Development of compact spectrometers is crucial for portable sensing applications.
  • Integrating multiple photodetectors with varying spectral responses on a single chip presents challenges.

Purpose of the Study:

  • To propose and validate an ultrathin spectrometer design with enhanced light-harvesting efficiency.
  • To demonstrate the use of local strain engineering in III-nitride semiconductors for tunable photodetector arrays.

Main Methods:

  • Utilizing local strain engineering in group III-nitride semiconductor nanostructures to create photodetectors with distinct absorption cut-off wavelengths.
  • Incorporating a cone-shaped back-reflector fabricated using patterned sapphire substrate processes to enhance light harvesting.
  • Validating the spectrometer design through numerical simulations using experimentally measured photodetector responsivities.

Main Results:

  • Achieved a high light-harvesting efficiency of up to 60% for visible wavelengths.
  • Demonstrated the integration of multiple photodetectors with different absorption characteristics on a single chip.
  • Confirmed improved spectral reconstruction accuracy due to the cone-shaped back-reflector design.

Conclusions:

  • The proposed spectrometer design enables an ultrathin form factor with high performance.
  • Local strain engineering in III-nitride nanostructures is an effective method for creating tunable photodetectors.
  • The cone-shaped back-reflector design is a simple yet effective approach to boost light harvesting and spectral accuracy.