work function

USAGE SUMMARY

The phrase "work function" is correct and usable in written English.
It is typically used in physics and materials science to refer to the minimum energy needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. Example: "The work function of the material determines its electron emission properties and is crucial for applications in photoelectric devices."

✓ Grammatically correct

Science

Academia

News & Media

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Interestingly, by appropriate choice of the metal source for functionalization, work function engineering can lead to work function values higher or lower than that for pristine metallic nanotubes.

Carbon

4.3 Work function.

Stanford University

It's how American illusions about work function.

The Guardian - Opinion

Smoluchowski, R. Anisotropy of the electronic work function of metals.

Nature

The collector material should have a small work function.

Encyclopedia Britannica

Pt Ru alloy was selected from the work function viewpoint.

Applied Surface Science

The work function of the deposited coatings was measured.

Surface and Coatings Technology

The electronic work function ΦAu{111} by photoemission.

Electrochimica Acta

Details on the determination of work function based on Kelvin probe measurements were provided elsewhere.

Nature

Lang, N. D. & Kohn, W. Theory of metal surfaces: Work function.

Nature

The work function (WF) of PBDTT-ffQx and PCBM thin films were measured.

Nature

Expert writing Tips

Best practice

When discussing electron emission from a material, ensure you specify the material and conditions, as the "work function" can vary based on surface properties and temperature.

Common error

Avoid using "work function" when discussing isolated atoms or molecules in the gas phase. Ionization energy is the correct term for the energy required to remove an electron from an isolated atom or molecule, whereas "work function" applies to solid materials.

Linguistic Context

The phrase "work function" primarily functions as a noun, often used as a subject or object in scientific statements. As Ludwig AI confirms, it describes a specific physical property. Examples from Ludwig illustrate its use in contexts related to materials science and physics.

Expression frequency: Very common

Frequent in

Science

65%

Academia

20%

News & Media

5%

Less common in

Encyclopedias

5%

Formal & Business

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the term "work function" refers to the minimum energy required to remove an electron from a solid surface. Ludwig AI validates its grammatical correctness and prevalent use in scientific and academic contexts. As a technical term, it often appears in formal writing, particularly in physics, materials science, and engineering. Related concepts include "electron binding energy" and "ionization potential", although these have subtle differences in meaning. Remember to use "work function" when discussing solid materials and avoid confusing it with ionization energy, which applies to isolated atoms or molecules. "Work function" is a very common term within its specific domains.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

minimum extraction energy

Highlights the minimum energy needed to extract an electron from a material's surface, synonymous with "work function".

electron ejection energy

Refers to the energy required to eject an electron, similar to "work function" but emphasizing the ejection process.

electron binding energy

Focuses on the energy that binds an electron to a material, similar to "work function" but emphasizes the binding aspect.

energy barrier to electron emission

Emphasizes the energetic barrier that hinders electron emission from a surface.

threshold energy for photoemission

Specifically relates to the minimum energy of a photon required to eject an electron, linking energy input to electron emission.

photoelectric threshold

Specifies the minimum frequency (or energy) of light needed for the photoelectric effect to occur.

ionization potential

Refers to the energy needed to remove an electron from an atom or molecule in the gaseous phase, differing from "work function" which applies to solids.

surface potential barrier

Describes the potential energy barrier an electron must overcome at the surface of a material to escape.

electron affinity

Indicates the energy released when an electron is added to a neutral atom or molecule to form a negative ion. It differs in concept, since it describes electron capture instead of emission.

Fermi level alignment

Describes the energy level at which the probability of finding an electron is 50%. While not directly interchangeable, "work function" is linked to it.

FAQs

How is "work function" used in physics?

In physics, "work function" refers to the minimum energy required to remove an electron from a solid to a point in the vacuum immediately outside the solid surface. It's a crucial property in understanding phenomena like the photoelectric effect and thermionic emission.

What factors affect the "work function" of a material?

The "work function" of a material can be affected by several factors, including the material's surface composition, crystal structure, temperature, and the presence of adsorbates on the surface.

What's the difference between "electron affinity" and "work function"?

"Work function" describes the energy needed to remove an electron from a solid surface, while "electron affinity" refers to the energy released when an electron is added to a neutral atom or molecule. They are related but describe opposite processes.

How is the "work function" measured?

The "work function" can be measured using various techniques, including ultraviolet photoelectron spectroscopy (UPS), Kelvin probe microscopy, and thermionic emission measurements.