Nanoporous Aluminum by Galvanic Replacement: Dealloying and Inward-Growth Plating

Yang, Wei; Zheng, Xiangui; Wang, S.G.; Jin, Hai-Jun

doi:10.1149/2.0881809jes

Cited by 36 publications

(37 citation statements)

References 51 publications

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“…The proof-of-principle model relies on the convergence of sub-micron bunch length compression techniques underlying the emergent quasi-solid density particle bunches [12] with the advances in nanofabrication [13], [14], [15], [16]. Nanofabrication make possible nanoscale structural tunability of nanomaterials, for instance the diameter of vacuum-like core region and thickness of the walls of the tube apart from the characteristics of wall material.…”

Section: A Nanoplasmonic Modes In Nanomaterialsmentioning

confidence: 99%

Nanomaterials Based Nanoplasmonic Accelerators and Light-Sources Driven by Particle-Beams

Sahai

2021

IEEE Access

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Unprecedented tens of TVm 1 fields are modeled to be realizable using novel nanoplasmonic surface crunch-in modes in nanomaterials. These relativistic nonlinear surface modes are accessible due to advances in nanofabrication and quasi-solid density sub-micron particle bunch compression. Proof of principle of TVm 1 plasmonics is provided using three-dimensional computational and analytical modeling of GeV scale energy gain in sub-millimeter long tubes having nanomaterial walls with controllable freeelectron densities, n t ⇠ 10 22 24 cm 3 and hundreds of nanometer core radius driven by quasi-solid electron beams, n b ⇠ 0.01n t . Besides the tens of TeVm 1 acceleration gradients, equally strong transverse fields lead to self-focusing and nanomodulation of the beam which drive extreme beam compression to ultrasolid peak densities increasing the crunch-in field strength. Apart from ultra-solid particle beams, extreme focusing also opens up a nano-wiggler like tunable coherent O(100MeV) ultra-dense photon production.

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Section: A Nanoplasmonic Modes In Nanomaterialsmentioning

confidence: 99%

Nanomaterials Based Nanoplasmonic Accelerators and Light-Sources Driven by Particle-Beams

Sahai

2021

IEEE Access

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“…As previously mentioned, Yang et al [32] have successfully converted foils of Al 2 Mg 3 into NPA by exposing them to an ionic liquid. The GRR proceeds as follows:…”

Section: Resultsmentioning

confidence: 99%

“…Very recently, H-J. Jin et al [32], and J. S. Corsi et al [33] demonstrated that it is possible to prepare porous Al structures by means of galvanic replacement reaction (GRR) and electrochemical dealloying, respectively, starting from an alloy of Al 2 Mg 3 . In particular, GRR involves a dissolution of sacrificial metals via galvanic oxidation and concurrent precipitation of second metals onto the sacrificial one via galvanic reduction of metallic precursor cations [34].…”

Section: Introductionmentioning

confidence: 99%

Galvanic Replacement Reaction as a Route to Prepare Nanoporous Aluminum for UV Plasmonics

et al. 2020

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There is a growing interest in extending plasmonics applications into the ultraviolet region of the electromagnetic spectrum. Noble metals are commonly used in plasmonic, but their intrinsic optical properties limit their use above 350 nm. Aluminum is probably the most suitable material for UV plasmonics, and in this work we fabricated substrates of nanoporous aluminum starting from an alloy of Al2Mg3. The porous metal is obtained by means of a galvanic replacement reaction. Such nanoporous metal can be exploited to achieve a plasmonic material suitable for enhanced UV Raman spectroscopy and fluorescence. Thanks to the large surface to volume ratio, this material represents a powerful platform for promoting interaction between plasmonic substrates and molecules in the UV.

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“…The metallic materials we used are Al, Ag, and Au. Although nanoporous metallic materials also showed some interesting results in UV plasmonics [ 30 , 31 , 32 ], we didn’t consider the porosity here. The optical constants of Al, Ag, and Au, are from literature [ 33 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

Realization of Deep UV Plasmonic Enhancement to Photo Response through Al Mesh

Zhang

et al. 2020

Materials

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High-performance UV detectors are of great significance for various applications. Plasmonic structures enable great improvement of the performance of detectors. However, to push the plasmonic enhancement to photo response into the deep-UV region presents some challenges. In this work, we found that the optical properties of the supporting layer play important roles in achieving the optimal plasmonic enhancement. Therefore, we fully considered the dependence of the optical constants of the MgZnO supporting layer, which is a promising material to realize deep-UV photodetectors, on microstructure and crystalline quality, which are related to the fabrication method. Based on the optical constants, we designed an Al mesh plasmonic structure and fabricated it with a polystyrene monolayer as a mask. Finally, we demonstrated a three-times enhancement to photo response with UV radiation at 254 nm.

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Nanoporous Aluminum by Galvanic Replacement: Dealloying and Inward-Growth Plating

Cited by 36 publications

References 51 publications

Nanomaterials Based Nanoplasmonic Accelerators and Light-Sources Driven by Particle-Beams

Nanomaterials Based Nanoplasmonic Accelerators and Light-Sources Driven by Particle-Beams

Galvanic Replacement Reaction as a Route to Prepare Nanoporous Aluminum for UV Plasmonics

Realization of Deep UV Plasmonic Enhancement to Photo Response through Al Mesh

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