Porous Cu Nanowire Aerosponges from One‐Step Assembly and their Applications in Heat Dissipation

Abstract

Highly porous metal nanowire aerosponges are produced by direct assembly of the Cu nanowire in situ during their synthesis. Such a method offers not only great simplicity, but also excellent properties such as extremely low densities, high electrical conductivities, and remarkable mechanical properties. Furthermore, these Cu aerosponges exhibit excellent wicking behavior, suggesting their potential for heat-exchange applications in heat pipes.

Modern Inorganic Aerogels

“…[98] Thed ensity and the mechanical properties of the final gels are adjustable by changing the initial nanowire concentration. [100] Thehydrogels are formed in aonestep approach during the solvothermal synthesis of the nanowires themselves.C hanging the initial precursor concentration enables the control of the density,p orosity, electrical, thermal, and mechanical properties.E specially the high thermal conductivity of this material makes it very promising for applications as aheat sink. [99] These show a3D binary-network architecture and very promising electromechanical properties.A lternatively,c opper nanowire aero-or rather cryogels have been obtained from pre-formed hydrogels via freeze-drying.…”

Moderne Anorganische Aerogele

“…Unter Verwendung des Gefriergelierungsansatzes und anschließender Gefriertrocknung konnte eine stabile Suspension aus Kupfernanodrähten in ein Kupferaerogel transformiert werden. [100] Die Hydrogele werden in einem einstufigen Ansatz während der Solvothermalsynthese der Nanodrähte gebildet. Wird der Eis-Templatansatz verwendet, kçnnen ebenso Kryogele aus Silbernanodrähten gebildet werden.…”

“…[99] Diese weisen eine dreidimensionale, binäre Netzwerkarchitektur und sehr vielversprechende elektromechanische Eigenschaften auf.A ls Alternative konnten Kupfernanodrahtaerogele oder eher -kryogele aus vorab gebildeten Hydrogelen durch Gefriertrocknung erhalten werden. [100] Die Hydrogele werden in einem einstufigen Ansatz während der Solvothermalsynthese der Nanodrähte gebildet. Die Veränderung der ursprünglichen Vorstufenkonzentration ermçglicht die Kontrolle über die Dichte,P orositätsowie die elektrischen, thermischen und mechanischen Eigenschaften.…”

Nanowire Genome: A Magic Toolbox for 1D Nanostructures

“…[1][2][3][4][5][6][7][8] Recently, the number of nanowire (NW)-based publications has experienced an exponential increase (Figure 1a). Since the seminal review on the semiconductor nanowire in 2010 by the Yang group, [9] the research field of NWs has attracted significant attention and their applications have been extended to numerous fields (Figure 1b), such as electronics, [10][11][12][13] energy storage materials, [14,15] optoelectronics, [16,17] catalysis, [18][19][20][21] sensors, [16,22] and biology. [23] These exciting developments were 1D nanomaterials with high aspect ratio, i.e., nanowires and nanotubes, have inspired considerable research interest thanks to the fact that exotic physical and chemical properties emerge as their diameters approach or fall into certain length scales, such as the wavelength of light, the mean free path of phonons, the exciton Bohr radius, the critical size of magnetic domains, and the exciton diffusion length.…”