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

Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

54.8K
Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
54.8K
Transmission-based Precautions I: Contact, Enteric, and Droplets01:17

Transmission-based Precautions I: Contact, Enteric, and Droplets

4.6K
Transmission-based precautions are for patients known to be infected or suspected to be infected or colonized with organisms that pose a significant risk to others. Some transmission-based precautions include contact, enteric, and droplet.
Contact Precautions:
Contact precautions are the measures taken to prevent the transmission of infectious agents, especially epidemiologically important microorganisms such as MRSA or influenza, primarily transmitted through direct or indirect contact with an...
4.6K
Rise of Liquid in a Capillary Tube01:18

Rise of Liquid in a Capillary Tube

3.2K
When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
3.2K
Deriving the Speed of Sound in a Liquid01:09

Deriving the Speed of Sound in a Liquid

958
As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
The speed of sound in fluids can be derived by considering a mechanical wave...
958
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

3.5K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
3.5K
High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

3.0K
High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.
3.0K

You might also read

Related Articles

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

Sort by
Same author

Frequency and intensity noise of a grating-tuned external-cavity quantum cascade laser.

Optics express·2026
Same author

Introduction to photonics and quantum technologies celebrating the 30<sup>th</sup> anniversary of the quantum cascade laser.

Optics express·2026
Same author

Bridging Mid- and Near-Infrared by Combining Optomechanics and Self-Mixing.

ACS photonics·2026
Same author

Dual-comb photoacoustic and photothermal spectroscopy: A comprehensive review.

Photoacoustics·2026
Same author

Quantum cascade laser: 30 years of discoveries.

Nanophotonics (Berlin, Germany)·2025
Same author

Shot-noise-limited emission from interband and quantum cascade lasers.

Optics express·2025

Related Experiment Video

Updated: Jan 30, 2026

High Throughput Analysis of Liquid Droplet Impacts
09:00

High Throughput Analysis of Liquid Droplet Impacts

Published on: March 6, 2020

7.0K

Liquid Droplet Microresonators.

Antonio Giorgini1, Saverio Avino2, Pietro Malara3

  • 1Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), via Campi Flegrei 34-Comprensorio A. Olivetti, 80078 Pozzuoli (Na), Italy. antonio.giorgini@ino.it.

Sensors (Basel, Switzerland)
|January 27, 2019
PubMed
Summary
This summary is machine-generated.

Researchers developed liquid droplet micro-cavities for sensing and spectroscopy. These droplet resonators offer high optical quality factors and enable label-free detection of compounds in liquids, paving the way for portable opto-fluidic devices.

Keywords:
cavity optomechanicscavity ring-down spectroscopydroplet micro-cavityfree-space laser excitationoptical Q-factorwhispering gallery modes

More Related Videos

Film Control to Study Contributions of Waves to Droplet Impact Dynamics on Thin Flowing Liquid Films
07:08

Film Control to Study Contributions of Waves to Droplet Impact Dynamics on Thin Flowing Liquid Films

Published on: August 18, 2018

7.8K
Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

16.9K

Related Experiment Videos

Last Updated: Jan 30, 2026

High Throughput Analysis of Liquid Droplet Impacts
09:00

High Throughput Analysis of Liquid Droplet Impacts

Published on: March 6, 2020

7.0K
Film Control to Study Contributions of Waves to Droplet Impact Dynamics on Thin Flowing Liquid Films
07:08

Film Control to Study Contributions of Waves to Droplet Impact Dynamics on Thin Flowing Liquid Films

Published on: August 18, 2018

7.8K
Fabrication of Silica Ultra High Quality Factor Microresonators
07:51

Fabrication of Silica Ultra High Quality Factor Microresonators

Published on: July 2, 2012

16.9K

Area of Science:

  • Optics and Photonics
  • Fluid Mechanics
  • Materials Science

Background:

  • Passive optical micro-cavities are crucial for various sensing applications.
  • Liquid-phase resonators offer unique advantages over solid-state counterparts.
  • Interfacial forces naturally create and suspend droplet resonators.

Purpose of the Study:

  • To provide an overview of passive optical micro-cavities in the liquid phase.
  • To demonstrate methods for exciting whispering-gallery modes in liquid droplets.
  • To explore the potential of droplet micro-cavities for sensing and opto-mechanics.

Main Methods:

  • Utilizing free-space optics to excite whispering-gallery modes in slow-evaporation liquids.
  • Employing phase-sensitive detection and multiple interference for laser frequency locking.
  • Measuring photon lifetimes to determine optical quality factors.
  • Conducting cavity optomechanics experiments with surface acoustic waves.

Main Results:

  • Achieved optical quality factors up to 10^7–10^8 in liquid-polymer droplets.
  • Demonstrated frequency locking of lasers to droplet resonator modes.
  • Showcased droplet resonators acting as both sensor and sample for detecting dissolved compounds and particles.
  • Presented initial experiments on cavity optomechanics in nanolitre droplets.

Conclusions:

  • Liquid droplet micro-cavities show significant potential for direct spectroscopy and bio-chemical sensing in liquid environments.
  • Droplet resonators offer a novel platform for on-tabletop opto-fluid-mechanics studies.
  • This technology enables label-free detection and characterization of liquid samples.