Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Photothermal Actuation of Vibrations for Measurements Using Laser Doppler Vibrometers
Published Patent Application Number: 18/834,889
Problem
Traditional vibration measurement tools often need direct contact, which can alter or damage sensitive samples - especially tiny or fragile ones like MEMS devices. These contact-based tools can also slow down measurement or limit precision.
Invention
The invention is an apparatus and process for measuring a vibration spectra of a sample using pulses of light to make a sample vibrate without touching it. A Laser Doppler Vibrometer (LDV) then measures these vibrations by detecting reflected light. The setup includes a special mirror and filters that separate the measurement laser from the vibration-driving light.
Potential Commercial Applications
- Allows for studying the vibration characteristics of materials without damage.
- Allows for non-contact checks during high-precision production.
- Allows for evaluating small or delicate biological structures safely.
- Conduct testing and checking of tiny devices without affecting them.
Competitive Advantage
- Non-contact testing
- Higher accuracy & sensitivity
- Versatility across materials and scales
- Faster and more efficient measurements