Knudsen pumps: A review

X Wang, T Su, W Zhang, Z Zhang… - Microsystems & …, 2020 - nature.com
The Knudsen pump (KP) is a kind of micro-pump that can form thermally induced flows
induced by temperature fields in rarefied gas environments. It has the advantages of having …

Aluminum doped zinc oxide deposited by atomic layer deposition and its applications to micro/nano devices

N Van Toan, TTK Tuoi, N Inomata, M Toda, T Ono - Scientific reports, 2021 - nature.com
This work reports investigation on the deposition and evaluation of an aluminum-doped zinc
oxide (AZO) thin film and its novel applications to micro-and nano-devices. The AZO thin film …

Thermally driven pumps and diodes in multistage assemblies consisting of microchannels with converging, diverging and uniform rectangular cross sections

G López Quesada, G Tatsios, D Valougeorgis… - Microfluidics and …, 2020 - Springer
Thermal transpiration pumping in multistage assemblies is computationally investigated.
Each stage is formed by combining in series-long microchannels with (a) uniform–uniform …

Review of optical thermometry techniques for flows at the microscale towards their applicability to gas microflows

S Colin, JM Fernández, C Barrot, L Baldas, S Bajić… - Micromachines, 2022 - mdpi.com
Thermometry techniques have been widely developed during the last decades to analyze
thermal properties of various fluid flows. Following the increasing interest for microfluidic …

Nanoengineered nanochannels for thermally ionic nanofluidic energy harvesting

N Van Toan, TTK Tuoi, N Inomata… - Energy Conversion and …, 2022 - Elsevier
This work demonstrates thermal-to-electric energy conversion based on ionic nanofluidic
transport in nanochannels inducted by a temperature gradient. Two types of highly periodic …

[HTML][HTML] Driving mechanism of thermal transpiration pump with porous material

S Sugimoto, H Sugimoto - AIP Advances, 2020 - pubs.aip.org
The behavior of the rarefied gas in the thermal transpiration pump with the porous material is
investigated numerically by the direct simulation Monte Carlo method. The mass flux …

Flow and transmission characteristics of the multistage hydrogen Knudsen pump in the micro-power system

J Lan, J Xie, J Ye, W Peng, X Jiao - International Journal of Hydrogen …, 2022 - Elsevier
The multistage hydrogen Knudsen pump based on the thermal transpiration effect has
exciting application prospects for hydrogen transport in the micro-power system. The …

Numerical investigation into the flow characteristics of gas mixtures in Knudsen pump with variable soft sphere model

C Du, X Wang, F Han, X Ren, Z Zhang - Micromachines, 2020 - mdpi.com
In Knudsen pumps with geometric configuration of rectangle, gas flows are induced by
temperature gradients along channel walls. In this paper, the direct simulation Monte Carlo …

A monolithic Si-micromachined four-stage Knudsen pump for µGC applications

T Byambadorj, Q Cheng, Y Qin… - Journal of …, 2021 - iopscience.iop.org
This paper reports the design, microfabrication, and experimental evaluation of a monolithic
Si-micromachined four-stage Knudsen pump (KP) suitable for microscale gas …

Knudsen Pumps and Their Potential Application to Artificial Pneumatic Micro-Muscles Actuation

D Zhang - 2023 - theses.hal.science
Knudsen micropumps are micropumps without any moving part, which are also known as
thermal transpiration micropumps or Knudsen compressors. They are able to pump gases …