A review of microfabrication approaches for the development of thin, flattened heat pipes and vapor chambers for passive electronic cooling applications

Filippou, Ioannis; Tselepi, Vasiliki; Ellinas, Kosmas

doi:10.1016/j.mne.2023.100235

Cited by 3 publications

(1 citation statement)

References 104 publications

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“…During etching, a very small number of etching inhibitors (usually less than 1%) from the electrode are sputtered on the surface, acting as micro- and nanomasks resulting in nanograss–nanofilament formation, which grows to larger hierarchical micro/nanostructures as etching time increases. More details about the process can be found in some previous work, , but the process is highly reproducible, and it has been implemented for the fabrication of micro/nanotextured surfaces focused on a plethora of applications (i.e., atmospheric water collection, antifogging surfaces, repellency of low-surface tension liquids, direct covalent immobilization of protein molecules on organic polymers, functional microdevices, , etc.). In order for the PMMA surfaces to become superhydrophobic, after the plasma micro/nanotexturing step for 1 or 6 min, a thin hydrophobic coating (about 30 nm) was deposited using plasma deposition of C 4 F 8 gas for 1 min (plasma deposition conditions: 900 W power, 25 sccm gas flow rate, and 40 mTorr pressure).…”

Section: Methodsmentioning

confidence: 99%

Functional Surfaces for Passive Fungal Proliferation Control: Effect of Surface Micro- and Nanotopography, Material, and Wetting Properties

Tselepi,

Sarkiris,

Nioras

et al. 2024

ACS Appl. Bio Mater.

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Fungal proliferation can lead to adverse effects for human health, due to the production of pathogenic and allergenic toxins and also through the creation of fungal biofilms on sensitive surfaces (i.e., medical equipment). On top of that, food spoilage from fungal activity is a major issue, with food losses exceeding 30% annually. In this study, the effect of the surface micro-and nanotopography, material (aluminum, Al, and poly(methyl methacrylate), PMMA), and wettability against Aspergillus awamori is investigated. The fungal activity is monitored using dynamic conditions by immersing the surfaces inside fungal spore-containing suspensions and measuring the fungal biomass growth, while the surfaces with the optimum antifungal properties are also evaluated by placing them near spore suspensions of A. awamori on agar plates. Al-and PMMA-based superhydrophobic surfaces demonstrate a passive-like antifungal profile, and the fungal growth is significantly reduced (1.6−2.2 times lower biomass). On the other hand, superhydrophilic PMMA surfaces enhance fungal proliferation, resulting in a 2.6 times higher fungal total dry weight. In addition, superhydrophobic surfaces of both materials exhibit antifouling and antiadhesive properties, whereas both superhydrophobic surfaces also create an "inhibition" zone against the growth of A. awamori when tested on agar plates.

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Section: Methodsmentioning

confidence: 99%

Functional Surfaces for Passive Fungal Proliferation Control: Effect of Surface Micro- and Nanotopography, Material, and Wetting Properties

Tselepi,

Sarkiris,

Nioras

et al. 2024

ACS Appl. Bio Mater.

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Rapid and versatile, micro-patterning and functionalization of complex structures on ultra-thin and flexible polymeric substrates

Cunaj,

Gogolides,

Tserepi

et al. 2024

Micro and Nano Engineering

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Dielectric Response of ZnO/PMMA Nanocomposites with Atmospheric Pressure Plasma-Modified Surfaces

Patsidis,

Dimitrakellis,

Gogolides

et al. 2024

Materials

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In this work, the effect of etching the surface of polymer matrix nanocomposites with atmospheric pressure plasma targeting to achieve enhanced dielectric properties was investigated. Polymer nanocomposites, with varying reinforcing phase content, were modified by atmospheric-pressure plasma resulting in an increase in the surface filler’s concentration. Polymethyl methacrylate (PMMA) matrix nanocomposites reinforced with zinc oxide (ZnO) nanoparticles were prepared and dielectrically studied as a function of the nanoparticle content and the plasma modified surfaces. The electrical response of the composite systems was studied by means of Broadband Dielectric Spectroscopy (BDS) over a wide range of temperatures and frequencies. The dielectric permittivity increased with the embedded phase content and with plasma surface treatment. Energy density followed the same trend as dielectric permittivity, and the plasma-treated nanocomposite with the higher ZnO content exhibited approximately 27% higher energy density compared to the unreinforced matrix.

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A review of microfabrication approaches for the development of thin, flattened heat pipes and vapor chambers for passive electronic cooling applications

Cited by 3 publications

References 104 publications

Functional Surfaces for Passive Fungal Proliferation Control: Effect of Surface Micro- and Nanotopography, Material, and Wetting Properties

Functional Surfaces for Passive Fungal Proliferation Control: Effect of Surface Micro- and Nanotopography, Material, and Wetting Properties

Rapid and versatile, micro-patterning and functionalization of complex structures on ultra-thin and flexible polymeric substrates

Dielectric Response of ZnO/PMMA Nanocomposites with Atmospheric Pressure Plasma-Modified Surfaces

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