areal density

USAGE SUMMARY

The term "areal density" is correct and usable in written English.
It refers to the amount of something per unit of area, and is often used in scientific or technical contexts to describe the density of a material or substance, such as the number of particles per unit of space. Example: The areal density of the new material is significantly higher than that of the previous version, making it more efficient for use in electronics.

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

The areal density of pockmarks increases with the local water depth.

Nature

Moreover, the thickness and areal density of the HsGDY films can be tuned by controlling the initial amount of monomer.

Nature

The average areal density is 453 pockmarks per square kilometer while local clusters exhibit densities of up to 1,200.

Nature

The areal density of disk drives -- the amount of data that can be squeezed onto the spinning platter of a disk drive -- has been doubling annually.

The New York Times

Especially in regions of high areal density, the pockmarks appear in coherent ring-like structures and elongated troughs (Fig. 2b).

Nature

(d,e) This technique has the potential for the direct writing of micro-devices with high areal density.

Nature

The areal density of etch pits on monolayers is 2 orders of magnitude higher than on bilayers or thicker sheets.

Stanford University

Longitudinal recording is approaching its areal density limits, and consequently the compound areal growth rate of areal density on hard disk drives has recently been slowing.

Journal of Magnetism and Magnetic Materials

The reversible capacity and rate performance of HsGDY film in LIBs slightly reduce with the increasing of areal density (Supplementary Fig. 12).

Nature

Generally, the areal density of DTLBs decreases progressively on higher and older surfaces.

Remote Sensing of Environment

This ITPS integrates advantages of low areal density and high temperature resistance up to 1600 °C.

Materials & Design

Expert writing Tips

Best practice

When using "areal density", specify the units of measurement to provide clarity and context. For example, express it as units per square meter (e.g., particles/m²) or bits per square inch (bits/in²).

Common error

Avoid using "areal density" when referring to volumetric density. Areal density is a two-dimensional measurement, while volumetric density refers to three-dimensional space. Use the appropriate term based on the context.

Linguistic Context

The phrase "areal density" functions as a noun phrase, typically used as a subject or object in a sentence. It denotes a quantitative measure of something distributed over a given area. As Ludwig AI confirms, the phrase is used correctly in the examples provided.

Expression frequency: Very common

Frequent in

Science

65%

News & Media

25%

Academia

10%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, "areal density" is a noun phrase used to express the quantity of something per unit area, predominantly in scientific and technical contexts. As Ludwig AI confirms, this phrase is grammatically sound and widely accepted. It finds frequent application in fields like materials science, data storage, and nanotechnology. When using "areal density", be mindful of specifying units to ensure clarity. While it's acceptable to use this term, remember that its purpose is to convey technical information, and therefore, it's most appropriate in formal writing. The phrase is very common, with a high presence in scientific and news media sources.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

areal concentration

Substitutes "density" with the similar term "concentration".

surface packing density

Replaces 'areal' with 'surface' and 'density' with 'packing density', emphasizing the arrangement on a surface.

spatial concentration

Uses 'spatial' instead of 'areal' to refer to space and replaces 'density' with 'concentration', indicating distribution in an area.

area-specific quantity

Rephrases the concept to focus on a quantity measured per unit area.

density per unit area

Explicitly states that density is being measured per area.

surface number density

Focuses on the number of items per unit area of a surface.

two-dimensional density

Specifies that the density is measured in two dimensions.

packing factor

Focuses on how tightly elements are packed in a given area.

areal coverage

Describes how much of an area is covered by a substance or element.

site density

Emphasizes the density of specific sites or locations within an area.

FAQs

How is "areal density" measured?

The measurement of "areal density" depends on the context. For magnetic storage, it's measured in bits per square inch. For materials science, it might be particles per square meter. Always specify the units to avoid ambiguity.

What is a common application of "areal density"?

A common application of "areal density" is in the context of hard drives, where it indicates how much data can be stored per unit area on the disk's surface. Higher "areal density" means more storage capacity.

What's the difference between "areal density" and "volumetric density"?

"Areal density" refers to the quantity of something per unit area (2D), while "volumetric density" refers to the quantity of something per unit volume (3D). Use "areal density" for surfaces and volumetric density for bulk materials.

Can "areal density" be used outside of scientific contexts?

While "areal density" is predominantly used in scientific and technical fields, it can be used in any context where you need to specify the amount of something per unit area. However, ensure the audience understands the term or provide a clear definition.