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

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

3.0K
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
3.0K
Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

13.5K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
13.5K
Light Acquisition02:16

Light Acquisition

8.5K
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.
8.5K

You might also read

Related Articles

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

Sort by
Same author

Orbital magnetoresistance in the antiferromagnet CoO driven by dynamic orbital angular momentum.

Science (New York, N.Y.)·2026
Same author

Temperature-dependent mean inner potential of polystyrene spheres measured using off-axis electron holography.

Ultramicroscopy·2026
Same author

Towards reliable electrical measurements of superconducting devices inside a transmission electron microscope.

Ultramicroscopy·2026
Same author

Atomic-scale quantification of individual oxygen vacancies and structural evolution in valence change memristors.

Nature communications·2026
Same author

Picosecond-scale coherent toggle switching of topological spin helicity.

Nature nanotechnology·2026
Same author

Effect of Chemical Segregation and Surface Defect Formation on the Mechanism of the Aluminum Dendrite Growth.

ACS nano·2026

Related Experiment Video

Updated: Aug 3, 2025

Author Spotlight: Unlocking the Secrets of Cataracts – Investigating Redox Repair Enzymes in Lens Epithelial Cells
03:47

Author Spotlight: Unlocking the Secrets of Cataracts – Investigating Redox Repair Enzymes in Lens Epithelial Cells

Published on: June 21, 2024

1.9K

TEMGYM Advanced - NanoMi lens characterisation.

David Landers1, Ian Clancy1, Rafal E Dunin-Borkowski2

  • 1Department of Physics, University of Limerick, Limerick, Munster, V94 T9PX, Ireland.

Micron (Oxford, England : 1993)
|April 8, 2023
PubMed
Summary

This study presents an analysis of an open-source electrostatic lens using free software. It demonstrates a method to calculate lens aberrations from finite element method data, offering a viable alternative to commercial tools.

Keywords:
Aberration integralDifferential algebraFinite element methodNanoMiParallelisationRay tracing

More Related Videos

Author Spotlight: Investigating Lens Development and Function Through Microinjection of RCAS(A) Retrovirus in Embryonic Chicken Lens
04:58

Author Spotlight: Investigating Lens Development and Function Through Microinjection of RCAS(A) Retrovirus in Embryonic Chicken Lens

Published on: September 1, 2023

1.1K
Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass ADG Fresnel Lens for Concentrating Photovoltaics
09:00

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass ADG Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

8.9K

Related Experiment Videos

Last Updated: Aug 3, 2025

Author Spotlight: Unlocking the Secrets of Cataracts – Investigating Redox Repair Enzymes in Lens Epithelial Cells
03:47

Author Spotlight: Unlocking the Secrets of Cataracts – Investigating Redox Repair Enzymes in Lens Epithelial Cells

Published on: June 21, 2024

1.9K
Author Spotlight: Investigating Lens Development and Function Through Microinjection of RCAS(A) Retrovirus in Embryonic Chicken Lens
04:58

Author Spotlight: Investigating Lens Development and Function Through Microinjection of RCAS(A) Retrovirus in Embryonic Chicken Lens

Published on: September 1, 2023

1.1K
Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass ADG Fresnel Lens for Concentrating Photovoltaics
09:00

Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass ADG Fresnel Lens for Concentrating Photovoltaics

Published on: October 27, 2017

8.9K

Area of Science:

  • Physics
  • Optics
  • Computational Science

Background:

  • Electrostatic lenses are crucial components in electron optics.
  • Accurate characterization of lens aberrations is essential for performance optimization.
  • Existing methods for analyzing discrete lens fields can be complex and costly.

Purpose of the Study:

  • To present a comprehensive analysis of an open-source electrostatic lens.
  • To demonstrate a method for calculating third-order geometric aberrations from finite element method (FEM) data.
  • To showcase the capabilities of the free software TEMGYM Advanced for lens design and characterization.

Main Methods:

  • Finite Element Method (FEM) calculations were performed to obtain discrete lens fields.
  • The TEMGYM Advanced software package was utilized for ray-tracing and lens characterization.
  • A fitting method was applied to discrete FEM lens fields to enable aberration calculation.

Main Results:

  • The focal length properties and third-order geometric aberrations of the electrostatic lens were determined.
  • The study successfully applied a fitting method to FEM-generated lens fields.
  • The analysis confirmed the viability of using free, open-source software for detailed lens characterization.

Conclusions:

  • The presented method provides a free and accessible alternative to commercial software for electrostatic lens analysis.
  • TEMGYM Advanced is a powerful tool for characterizing lens aberrations from FEM data.
  • This work facilitates the design and optimization of open-source electrostatic lenses for various applications.