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

Angular Momentum about an Arbitrary Axis01:11

Angular Momentum about an Arbitrary Axis

291
Imagine a rigid body with a mass denoted as 'm', which has its center of mass at point G and is rotating around an inertial reference frame. The angular momentum at an arbitrary point P can be calculated by taking the cross product of the position vector and linear momentum vector for each individual mass element.
The velocity of a mass element comprises its translational velocity and the relative velocity instigated by the body's rotation. Substituting the velocity equation into...
291
Azimuths and Bearings01:19

Azimuths and Bearings

268
Azimuths and bearings are essential concepts in surveying, providing methods to express the direction of a line relative to a meridian. Azimuths refer to the clockwise angle measured from the north end of a reference meridian to the given line, ranging from zero to 360 degrees. This method gives a comprehensive directional reference within a full 360-degree circle, making it a straightforward way to communicate direction in various fields, including navigation, cartography, and...
268
Conservation of Angular Momentum: Application01:18

Conservation of Angular Momentum: Application

11.5K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely spinning bicycle tire that slows over time due to torque arising from friction, or the slowing of Earth's rotation over millions of years due to frictional forces exerted on tidal deformations. However in the absence of a net external torque, the angular momentum remains conserved. The conservation of angular momentum principle requires a...
11.5K
Gyroscope: Precession01:24

Gyroscope: Precession

4.7K
Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
4.7K
Contact Angle01:13

Contact Angle

17.2K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
17.2K
Rotation with Constant Angular Acceleration - I01:37

Rotation with Constant Angular Acceleration - I

7.3K
If angular acceleration is constant, then we can simplify equations of rotational kinematics, similar to the equations of linear kinematics. This simplified set of equations can be used to describe many applications in physics and engineering where the angular acceleration of a system is constant.
Using our intuition, we can begin to see how rotational quantities such as angular displacement, angular velocity, angular acceleration, and time are related to one another. For example, if a flywheel...
7.3K

You might also read

Related Articles

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

Sort by
Same author

The Impact of Surface Discontinuities on MEMS Thermal Wind Sensor Accuracy.

Sensors (Basel, Switzerland)·2023
Same author

Evaluation of Microfluidic Ceiling Designs for the Capture of Circulating Tumor Cells on a Microarray Platform.

Advanced biosystems·2020
Same author

FEM-Analysis of 2D Micromachined Flow Transduers based on aGe-Thermistor Arrays and a Double Bridge Readout.

Sensors (Basel, Switzerland)·2019
Same author

Noninvasive 3D Field Mapping of Complex Static Electric Fields.

Physical review letters·2019
Same author

Development and Characterization of Thermal Flow Sensors for Non-Invasive Measurements in HVAC Systems.

Sensors (Basel, Switzerland)·2019
Same author

A Thermal Flow Sensor Based on Printed Circuit Technology in Constant Temperature Mode for Various Fluids.

Sensors (Basel, Switzerland)·2019

Related Experiment Video

Updated: Oct 20, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.2K

Optical Angular Sensor for Space Applications.

Alexander Dabsch1, Christoph Rosenberg1, Majesa Trimmel1

  • 1Institute of Sensor and Actuator Systems, University of Technology Vienna, 1040 Vienna, Austria.

Sensors (Basel, Switzerland)
|September 10, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel silicon/glass optical sensor for precise axial angle measurements. It utilizes light diffraction and self-referencing to achieve high-resolution angular detection.

Keywords:
Si-based-sensorangular sensoroptical sensorself-referencing

More Related Videos

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.3K
Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

19.7K

Related Experiment Videos

Last Updated: Oct 20, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.2K
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.3K
Bringing the Visible Universe into Focus with Robo-AO
10:35

Bringing the Visible Universe into Focus with Robo-AO

Published on: February 12, 2013

19.7K

Area of Science:

  • Optoelectronics
  • Optical Sensing
  • Materials Science

Background:

  • Accurate axial angle measurement is crucial in various engineering applications.
  • Existing sensors may face limitations in resolution, range, or self-referencing capabilities.
  • Development of robust and high-precision angular sensors is an ongoing research area.

Purpose of the Study:

  • To present a novel silicon/glass sensing structure for static axial angle measurements.
  • To demonstrate a self-referencing optical angular sensor with high resolution.
  • To explore the sensor's performance characteristics, including resolution and angular range.

Main Methods:

  • Design and fabrication of a silicon/glass sensing structure with an etched optical medium.
  • Utilizing a Light Emitting Diode (LED) and two photodiodes for light diffraction and signal detection.
  • Implementing a self-referencing mechanism using reflected light and specific LED wavelength (near 1000 nm).
  • Employing a coating layer to restrict illuminated areas and prevent multiple reflections.

Main Results:

  • Achieved a resolution of 0.05 degrees for rotation angle measurements.
  • Demonstrated a measurable angular range from 30° up to 270° by stacking sensor units.
  • Established a dependency between torsion angle and light intensity based on the etched structure.

Conclusions:

  • The developed silicon/glass optical sensor offers high-resolution and a significant angular measurement range.
  • The self-referencing design enhances measurement reliability.
  • This sensor technology holds potential for applications requiring precise static axial angle determination.