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

Diode: Forward bias01:20

Diode: Forward bias

In semiconductor devices, diodes play a crucial role in directing current flow, and its operation is primarily categorized into forward bias and reverse bias. A diode is said to be forward-biased when its p-type region is connected to the positive terminal of a battery and its n-type region is linked to the negative terminal. This configuration reduces the potential barrier within the diode, allowing current to flow easily from the p to the n-type region.
The behavior of a diode in forward bias...
Calorimetry01:19

Calorimetry

When objects at different temperatures are placed in contact with each other but isolated from everything else, they attain thermal equilibrium. A container that prevents heat transfer in or out is called a calorimeter, and the use of a calorimeter to make measurements is called calorimetry. Generally, these measurements involve heat or specific heat capacity. The term "calorimetry problem" is used for any problem where the specified objects are thermally isolated from their surroundings. An...
Constant Pressure Calorimetry03:02

Constant Pressure Calorimetry

Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
Small-signal Diode Model01:18

Small-signal Diode Model

In analyzing the behavior of diodes in circuits, the relationship between the current through a diode and the voltage across it is of particular interest, especially when considering the effect of a direct current (DC) bias voltage. When applied, this DC bias influences the diode's operating point, known as the Q point, around which the current-voltage (I-V) characteristic of the diode exhibits exponential behavior. Introducing a small, time-varying signal on top of this bias aids in examining...
Modeling of Diode Forward Characteristics01:19

Modeling of Diode Forward Characteristics

Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...

You might also read

Related Articles

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

Sort by
Same author

A CASE OF BINOCULAR COLOBOMA OF THE LENS WITH ACCOMMODATIVE POWER RETAINED.

Transactions of the American Ophthalmological Society·2014
Same author

DISLOCATION OF BOTH CRYSTALLINE LENSES.

Transactions of the American Ophthalmological Society·2014
Same author

A MODIFICATION OF THE OPERATION FOR CANTHOPLASTY.

Transactions of the American Ophthalmological Society·2014
Same author

The isolation of diphtheroids from apparently normal cows.

The North American veterinarian·2010
Same author

A study of the diptheroids found in infectious bovine pyelonephritis.

Journal of bacteriology·2010
Same author

Artifically induced case of pyelonephritis in a bovine.

M. S. C. veterinarian·2010
Same journal

Compressed multi-scale entropy and its application in mechanical fault diagnosis.

The Review of scientific instruments·2026
Same journal

Bidirectional drive and multi-resolution adjustment across frequency bands in inertial impact piezoelectric motors via multimodal resonant vibration.

The Review of scientific instruments·2026
Same journal

A magnetic field sensor based on flaky Terfenol-D material and dual fiber grating.

The Review of scientific instruments·2026
Same journal

A novel E-field eight-way cavity combiner for high-power S-band applications.

The Review of scientific instruments·2026
Same journal

Constant radius blade spring suspended bench for vibration isolation.

The Review of scientific instruments·2026
Same journal

Qualification of infrared optical fibers and emitters for a spectrometer for in situ planetary exploration: Results from the TRIS (TRansmission and Illumination System) project.

The Review of scientific instruments·2026
See all related articles

Related Experiment Video

Updated: Jul 2, 2026

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

Thermal conductivity comparison method based on silicon diode thermometry.

W N Lawless1, C F Clark

  • 1Lake Shore Cryotronics, Inc., 64 E. Walnut St., Westerville, Ohio 43081, USA.

The Review of Scientific Instruments
|June 1, 1979
PubMed
Summary
This summary is machine-generated.

A novel room-temperature thermal conductivity comparison method uses silicon diode thermometry, avoiding calibrated thermometers. This technique achieves approximately 5% uncertainty for short samples, offering a simpler approach to material characterization.

More Related Videos

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
11:07

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

Published on: August 15, 2015

Related Experiment Videos

Last Updated: Jul 2, 2026

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

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
11:07

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties

Published on: August 15, 2015

Area of Science:

  • Materials Science
  • Thermodynamics
  • Measurement Science

Background:

  • Accurate thermal conductivity measurement is crucial for material selection and performance.
  • Existing methods often require calibrated thermometers and significant temperature differentials.
  • A simplified, room-temperature method is needed for broader accessibility.

Purpose of the Study:

  • To present a novel room-temperature method for comparing thermal conductivity.
  • To demonstrate the method's efficacy using silicon diode thermometry.
  • To assess the uncertainty and potential improvements of the technique.

Main Methods:

  • Developed a comparative thermal conductivity measurement technique.
  • Utilized silicon diode thermometry for precise temperature monitoring (<1 K rise).
  • Measured three unknown samples against an alumina standard.

Main Results:

  • Achieved a room-temperature thermal conductivity comparison method.
  • Demonstrated an approximate uncertainty of +/-5% for short samples.
  • Successfully measured thermal conductivity of unknown materials relative to alumina.

Conclusions:

  • The described method offers a viable alternative for thermal conductivity comparison without calibrated thermometers.
  • The technique is suitable for short samples with manageable uncertainty.
  • Potential exists for adaptation to other temperatures and accuracy enhancements.