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

Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

1.2K
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
1.2K
Gravitational Potential Energy for Extended Objects01:07

Gravitational Potential Energy for Extended Objects

2.0K
Consider a system comprising several point masses. The coordinates of the center of mass for this system can be expressed as the summation of the product of each mass and its position vector divided by the total mass:
2.0K
Photoreceptors and Plant Responses to Light02:00

Photoreceptors and Plant Responses to Light

28.4K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
28.4K
Light Acquisition02:16

Light Acquisition

9.6K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.6K
Light as Energy01:35

Light as Energy

95.9K
The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit...
95.9K
Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

726
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
726

You might also read

Related Articles

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

Sort by
Same author

WAveHCT: Wavelet-Attentive Hybrid Convolution-Transformer Network for Breast Cancer Diagnosis in Ultrasound Images.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Deep-Fusion of Scalogram and Spatio-Temporal EEG Features with Attention Mechanism for Autism Spectrum Disorder Identification.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Design and Optimization Study of a Linkage Driven Finger of a Hand Exoskeleton for use in Post Stroke Rehabilitation.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

An Efficient 1D CNN Architecture for Multi-Channel EEG Seizure Detection.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

EEG Artifact Removal using Stacked Multi-Head Attention Transformer Architecture.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Identification of hub genes to determine drug-disease correlation in breast carcinomas.

Medical oncology (Northwood, London, England)·2023
Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026
Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026
Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026
Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026
Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026
Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026
See all related articles

Related Experiment Video

Updated: Jan 30, 2026

Lensless Fluorescent Microscopy on a Chip
11:23

Lensless Fluorescent Microscopy on a Chip

Published on: August 17, 2011

18.2K

Extended light-source-based lensless microscopy using constrained and regularized reconstruction.

Sanjeev Kumar, Manjunatha Mahadevappa, Pranab K Dutta

    Applied Optics
    |January 30, 2019
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces lensless microscopy using a simple white LED flashlight. A novel optimization method recovers image resolution lost due to reduced light coherence.

    More Related Videos

    Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
    10:32

    Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

    Published on: April 23, 2021

    3.2K
    Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source
    08:35

    Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source

    Published on: May 29, 2021

    7.1K

    Related Experiment Videos

    Last Updated: Jan 30, 2026

    Lensless Fluorescent Microscopy on a Chip
    11:23

    Lensless Fluorescent Microscopy on a Chip

    Published on: August 17, 2011

    18.2K
    Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
    10:32

    Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source

    Published on: April 23, 2021

    3.2K
    Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source
    08:35

    Achieving Efficient Fragment Screening at XChem Facility at Diamond Light Source

    Published on: May 29, 2021

    7.1K

    Area of Science:

    • Optics and Photonics
    • Microscopy Techniques
    • Computational Imaging

    Background:

    • Lensless microscopy offers portability and cost-effectiveness.
    • Traditional lensless microscopy relies on coherent or partially coherent light sources.
    • Light coherence directly impacts the resolution of reconstructed images.

    Purpose of the Study:

    • To demonstrate lensless microscopy using a spatially extended, incoherent light source (white LED).
    • To present a reconstruction method that overcomes resolution limitations caused by reduced light coherence.
    • To enhance the performance of lensless microscopy with readily available illumination.

    Main Methods:

    • Utilized a standard white LED flashlight as a spatially extended light source.
    • Developed a reconstruction algorithm based on constrained and regularized optimization.
    • Applied the method to estimate the object from lensless microscopy data.

    Main Results:

    • Successfully implemented lensless microscopy with an unengineered, spatially extended white LED source.
    • The proposed optimization method effectively recovered image resolution compromised by decreased light coherence.
    • Achieved high-quality object reconstruction despite the use of an incoherent light source.

    Conclusions:

    • Lensless microscopy is feasible and effective with simple, spatially extended light sources.
    • Constrained and regularized optimization is a powerful tool for enhancing resolution in lensless imaging.
    • This approach broadens the applicability of lensless microscopy by removing the need for complex coherent light setups.