Heat Transfer with Micro/Nano Structures

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (31 January 2026) | Viewed by 762

Special Issue Editor

Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131, USA
Interests: heat transfer; microscale thermal diagnostics; nanoengineering

Special Issue Information

Dear Colleagues,

The growing demand for effective thermal management in advanced technologies, such as high-power computing and AI chips, hypersonic vehicles, deep space exploration, and next-generation fusion and fission reactors, has made heat transfer enhancement increasingly critical. Micro- and nanoscale structures have emerged as powerful tools in this effort due to their passive nature and strong potential for performance improvement.

This Special Issue aims to highlight breakthroughs in micro- and nano-structures and their applications in enhancing heat transfer. We welcome studies that introduce novel structures with exceptional thermal performance, explore innovative fabrication methods suitable for large-scale and cost-effective production, and investigate the underlying physical mechanisms that drive this enhancement.

We invite original research articles and review papers. Topics of interest include, but are not limited to:

  • Novel micro/nano structures (e.g., channels, pillars, porous layers, hierarchical architectures) with outstanding heat transfer (conduction, convection, and radiation) capabilities;
  • Scalable and cost-effective fabrication techniques for these structures;
  • Fundamental mechanisms that govern heat transfer enhancement in micro/nano-engineered surfaces.

We look forward to receiving your contributions.

Dr. Chi Wang
Guest Editor

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Keywords

  • micro/nano structures
  • conduction
  • convection
  • radiation
  • scalable fabrication

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Published Papers (1 paper)

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Research

32 pages, 22047 KB  
Article
Experimental Investigation of Fin Distribution Effects on Single-Phase Flow in Micro-Pin-Finned Heat Sinks with Numerical Support
by Alperen Evcimen, Burak Markal and Mete Avci
Micromachines 2026, 17(4), 416; https://doi.org/10.3390/mi17040416 - 29 Mar 2026
Viewed by 544
Abstract
Technological development and thermal management are closely related, as chip-based units demand efficient cooling. Microchannel cooling is a key solution. This study, for the first time, experimentally and numerically investigates fin distributions with decreasing numbers, with/without staggered configurations, and the effect of dimples [...] Read more.
Technological development and thermal management are closely related, as chip-based units demand efficient cooling. Microchannel cooling is a key solution. This study, for the first time, experimentally and numerically investigates fin distributions with decreasing numbers, with/without staggered configurations, and the effect of dimples on single-phase flow in micro-pin-finned heat sinks. The database covers mass fluxes from 500 to 750 kg m−2 s−1 (in 50 increments) and four heat sinks (coded as MH-0, MH-1, MH-2, MH-3), with Reynolds numbers ranging from 234 to 327. Complementary numerical simulations were also employed to visualize flow structures and local Nusselt distributions to elucidate the experimental observations. It was concluded that low-velocity eddies occur in the dimples and between the successive pin-fins. The best thermal performance was obtained for MH-3, while the lowest pressure drop was measured for MH-1. Therefore, if heat transfer is the primary aim, MH-3 is preferred. MH-3 increases average Nusselt Number (Nuavg) by between 11.45% and 14.38% compared to MH-0. However, the pumping power results underline the importance of MH-1. Compared to MH-0, the pumping power decreases by up to 18.4% for MH-1, 16.6% for MH-2, and 13.8% for MH-3. Full article
(This article belongs to the Special Issue Heat Transfer with Micro/Nano Structures)
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