Based on the notion that temperature influences electrical resistivity, Metal Nanoparticle Thermistor are tools used to measure temperature. Metal Nanoparticle Thermistors are usually made of metals or semiconductors. The resistivity of semiconductors reduces as temperature rises, whereas the resistivity of metals increases.
Although it is less common, Metal Nanoparticle Thermistor can be made of composite materials, such as a composite with a conducting filler and a less conductive (or nonconductive) matrix. The resistivity of the composite material fluctuates with temperature as a result of the microstructure being altered by temperature.
An example of a thermistor in the form of a composite material is carbon black-filled polymer; as the temperature rises, thermal expansion occurs . The interlaminar interface of a continuous carbon fiber polymer matrix composite is another illustration of a thermistor in the form of a composite material .
The electrical resistance of the interlaminar interface decreases as temperature rises due to an increase in the likelihood of electrons hopping from one lamina to the next .
A 2D array of thermistors and a 2D grid of electrical connections are created for the purpose of spatially resolved temperature sensing by using two laminae in a cross-ply configuration (i.e., the fibers in the two laminae are perpendicular to one another). Another example is short carbon fiber-filled cement , whose resistivity falls as the cement’s moisture content rises.
The Global Metal Nanoparticle Thermistor market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
The Metal Nanoparticle Thermistor, typically made from metallic oxides, is a type of resistor whose electrical resistance is dependent on its temperature.
Despite the wide usage, the limitations of ceramic thermistors become increasingly apparent as devices with improved performances are sought and as new applications emerge. Herein, a thermistor that is shown with a beta (B) value of 10 000 K can be made exclusively from metal nanoparticles functionalized with charged organic ligands.
This B value is hard to achieve for ceramic devices, which is due to the increase of effective counterion concentration and its mobility upon thermal activation. Importantly, the performance of the Metal Nanoparticle Thermistor is maintained when it is fabricated on a flexible substrate and experiences reversible bending.
Demos of thermistor arrays for heat transfer, distribution, and comparison of their performance with commercial products are also demonstrated. Owing to the low temperature and simple casting process, conformably flexible characteristics, stable solid states, and ultra-high sensitivities, this device is expected to be practically used soon.
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