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

Heat Capacities of an Ideal Gas III01:25

Heat Capacities of an Ideal Gas III

3.5K
The number of independent ways a gas molecule can move along straight line, rotate, and vibrate is called its degrees of freedom. Supposing d represents the number of degrees of freedom of an ideal gas, the molar heat capacity at constant volume of an ideal gas in terms of d is
3.5K
Gas Thermometers and the Kelvin Scale01:22

Gas Thermometers and the Kelvin Scale

7.2K
The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy of molecules is zero (or the minimum allowed by quantum mechanics). Experiments confirm the existence of such a temperature, called absolute zero. An absolute temperature scale is one whose zero point is absolute zero. Such scales are convenient in science because several physical quantities, such as the volume of an ideal gas, are directly...
7.2K
Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

1.4K
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
1.4K
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

2.0K
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
2.0K
Heating and Cooling Curves02:44

Heating and Cooling Curves

28.7K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
28.7K
Constant Volume Calorimetry02:41

Constant Volume Calorimetry

31.6K
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
31.6K

You might also read

Related Articles

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

Sort by
Same author

Principles of electron wave front modulation with two miniature electron mirrors.

Ultramicroscopy·2021
Same author

Systemic acidemia impairs cardiac function in critically Ill patients.

EClinicalMedicine·2021
Same author

Electrostatic electron mirror in SEM for simultaneous imaging of top and bottom surfaces of a sample.

Ultramicroscopy·2021
Same author

Flat electron mirror.

Ultramicroscopy·2020
Same author

Cooling a low noise amplifier with a micromachined cryogenic cooler.

The Review of scientific instruments·2013
Same author

High frequency pressure oscillator for microcryocoolers.

The Review of scientific instruments·2008

Related Experiment Video

Updated: Mar 29, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
07:17

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Published on: August 1, 2017

13.3K

Compact flat-panel gas-gap heat switch operating at 295 K.

M A R Krielaart1, C H Vermeer2, S Vanapalli1

  • 1University of Twente, P.O. BOX 217, 7500 AE Enschede, The Netherlands.

The Review of Scientific Instruments
|December 3, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed a compact, 3D-printed gas-gap heat switch for adaptive thermal management. This innovative device offers superior performance and reliability compared to traditional heat switches, reducing system energy and mass budgets.

More Related Videos

Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells
08:16

Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells

Published on: October 2, 2016

10.1K
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

8.2K

Related Experiment Videos

Last Updated: Mar 29, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
07:17

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Published on: August 1, 2017

13.3K
Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells
08:16

Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells

Published on: October 2, 2016

10.1K
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

8.2K

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Thermal Engineering

Background:

  • Heat switches are crucial for adaptive thermal management, enabling adjustable cooling rates.
  • Current heat switches are often bulky and have limited thermal performance, hindering widespread adoption.
  • Existing designs can be complex to manufacture and assemble, impacting reliability.

Purpose of the Study:

  • To develop a compact and high-performance heat switch using additive manufacturing.
  • To overcome the limitations of conventional heat switches in terms of size, performance, and reliability.
  • To demonstrate a novel gas-gap heat switch design suitable for various thermal management applications.

Main Methods:

  • Utilized selective laser melting (3D printing) additive manufacturing technology.
  • Designed and fabricated a compact, flat-panel gas-gap heat switch.
  • Characterized the thermal performance, including on-off heat conductance ratio and off heat conductance.

Main Results:

  • Developed a 10 cm x 10 cm x 3.2 mm heat switch weighing only 121 g.
  • Achieved an off heat conductance of 0.2 W/K at 295 K.
  • Demonstrated a superior on-off heat conductance ratio of 38.

Conclusions:

  • The 3D-printed gas-gap heat switch offers a compact, reliable, and high-performance alternative to traditional designs.
  • Additive manufacturing enables simpler, more economic production and assembly of advanced thermal management devices.
  • This technology has the potential to significantly reduce the energy and mass requirements of various thermal systems.