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

Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

531
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
531
Atomic Force Microscopy01:08

Atomic Force Microscopy

3.1K
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
3.1K
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

565
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
565

You might also read

Related Articles

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

Sort by
Same author

Reimbursement policy and outcomes after transcatheter aortic valve implantation.

Journal of the Chinese Medical Association : JCMA·2026
Same author

Bioinspired Adaptive Leg-Claw Enables Robust Perching and Grasping for UAVs.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

An exploratory study on predicting depressive symptoms in autistic individuals using wearable devices and machine learning.

Journal of the Formosan Medical Association = Taiwan yi zhi·2025
Same author

Using Wearable Device and Machine Learning to Predict Mood Symptoms in Bipolar Disorder: Development and Usability Study.

JMIR medical informatics·2025
Same author

Dysbiosis and depression: A study of gut microbiota alterations and functional pathways in antidepressant-naïve mood disorder patients.

Translational psychiatry·2025
Same author

Hypoactivity of the Prefrontal Cortex During Go/No-Go Task in Patients With Generalized Anxiety Disorder.

Depression and anxiety·2025
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: Apr 22, 2026

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

1.0K

Reference-free beam-sampling system for freeform surface measurements.

Wenjiang Guo, Liping Zhao, I-Ming Chen

    Applied Optics
    |October 17, 2014
    PubMed
    Summary
    This summary is machine-generated.

    A novel reference-free beam-sampling (RFBS) method measures freeform optical surfaces with nanometer accuracy. This technique uses the optical beam as a probe, enabling precise characterization of complex optical elements.

    More Related Videos

    Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform
    08:10

    Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

    Published on: October 6, 2019

    5.8K
    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
    09:10

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

    Published on: December 5, 2025

    1.3K

    Related Experiment Videos

    Last Updated: Apr 22, 2026

    Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
    07:58

    Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

    Published on: July 25, 2025

    1.0K
    Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform
    08:10

    Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

    Published on: October 6, 2019

    5.8K
    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
    09:10

    The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

    Published on: December 5, 2025

    1.3K

    Area of Science:

    • Optics and Photonics
    • Metrology and Measurement Science
    • Precision Engineering

    Background:

    • Freeform optical elements are crucial in advanced optics, manufacturing, and precision industries.
    • Measuring non-rotationally symmetrical freeform surfaces presents significant challenges for existing noncontact techniques.
    • There is a need for advanced metrology solutions capable of accurately characterizing complex optical surfaces.

    Purpose of the Study:

    • To propose and develop a new reference-free beam-sampling (RFBS) methodology and system.
    • To enable noncontact measurement of freeform optical surfaces with high accuracy.
    • To overcome limitations of current measurement techniques for complex optical profiles.

    Main Methods:

    • The RFBS system utilizes the measurement beam itself as an optical probe.
    • Lateral disturbance is introduced to a modulated beam to sample the surface.
    • The curvature matrix of the freeform surface is measured using this technique.

    Main Results:

    • Simulations and experiments were conducted to validate the RFBS methodology.
    • The system achieved measurement accuracy in the tens of nanometers.
    • Effective measurement was demonstrated for surfaces with a peak-valley value exceeding 1 mm.

    Conclusions:

    • The feasibility and effectiveness of the reference-free beam-sampling (RFBS) methodology are proven.
    • The developed RFBS system offers a promising solution for high-accuracy metrology of freeform optical elements.
    • This technique advances the measurement capabilities for complex optical surfaces in precision industries.