Nanostructured surfaces from ligand-protected metal nanoparticles

2020 ◽  
Vol 49 (41) ◽  
pp. 14314-14319
Author(s):  
Xin Li ◽  
Yiming Guo ◽  
Hai Cao
Keyword(s):  
Metal Nanoparticles ◽  
Nanostructured Surfaces ◽  
Efficient Approach ◽  
Low Dimensional

Using ligand-protected nanoparticles to create low-dimensional nanostructures on the surfaces represents a facile and efficient approach to fabricate nanostructured surfaces.

scholarly journals Optimal Linear Arrangement of Turán Graphs

2020 ◽  
Vol 8 (6) ◽  
pp. 3618-3621
Keyword(s):  
Parallel Processing ◽  
Dimensional Space ◽  
Graph Embedding ◽  
Optimal Layout ◽  
Linear Arrangement ◽  
Efficient Approach ◽  
Optimal Linear ◽  
Low Dimensional ◽  
Processing Techniques ◽  
Turán Graph

Graph embedding in parallel processing techniques has acquired considerable attention and hence raised as an efficient approach for reducing overhead data into low-dimensional space. Optimal layout and congestion are powerful parameters to examine the capability of embedding. In this study, Modified Congestion and  -Partition lemmas are utilized to obtain the optimal layout of Turán graph into path and windmill graphs.

Effect of Surface Plasmon Resonance on the Photoluminescence from Si Quantum Dot Structures for Third Generation Solar Cell Applications

2012 ◽  
Vol 1391 ◽  
Author(s):  
Supriya Pillai ◽  
Joel J. Hohn ◽  
Craig M. Johnson ◽  
Gavin J. Conibeer
Keyword(s):  
Quantum Dots ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Self Assembly ◽  
Metal Layer ◽  
Resonance Excitation ◽  
Enhanced Absorption ◽  
Assembly Method ◽  
Low Dimensional ◽  
Silver Metal

ABSTRACTLow dimensional structures like quantum dots (QDs) offers the the ability to tune the absorption properties of standard semiconductor materials. However, QDs are relatively weak light absorbers and hence may benefit significantly from coupling with plasmonic modes in nearby metal structures. In the case of a Si QD absorber layer for photovoltaic applications, enhanced absorption would lead to improved power conversion efficiency. Silver metal nanoparticles (MNPs) were deposited on Si QD structures using the self-assembly method of evaporation and annealing. Room temperature photoluminescence (PL) measurements were used to study the surface plasmon (SP) enhanced emission from the samples. The results were compared to conventional metal back reflectors. Enhanced surface plasmon coupled emission (SPCE) from Si QDs in the vicinity of silver metal nanoparticles (MNPs) is observed with a good correlation between the enhancement and the resonance excitation. Quenching was observed from the same emitter layers placed in close proximity to thin flat silver reflector layers, indicating the importance of the spacer layer between a metal layer and the quantum dots in optimising enhancement. The results have implications for the design of SP-enhanced QD solar cells.

Nanostructured surfaces: Dimensionally constrained electrons and correlation

2017 ◽  
Author(s):  
E. Bertel ◽  
A. Menzel
Keyword(s):  
Phase Diagram ◽  
Silicon Surfaces ◽  
Correlation Effects ◽  
Metallic Surfaces ◽  
Strongly Coupled ◽  
One Dimensional ◽  
Nanostructured Surfaces ◽  
Low Dimensional ◽  
Electron Wavefunction ◽  
One Dimensional Nanostructures

This article examines dimensionally constrained electrons and electronic correlation in nanostructured surfaces. Correlation effects play an important role in spatial confinement of electrons by nanostructures. The effect of correlation will become increasingly dominant as the dimensionality of the electron wavefunction is reduced. This article focuses on quasi-one-dimensional (quasi-1D) confinement, i.e. more or less strongly coupled one-dimensional nanostructures, with occasional reference to 2D and 0D systems. It first explains how correlated systems exhibit a variety of electronically driven phase transitions, and especially the phases occurring in the generic phase diagram of correlated materials. It then describes electron–electron and electron–phonon interactions in low-dimensional systems and the phase diagram of real quasi-1D systems. Two case studies are considered: metal chains on silicon surfaces and quasi-1D structures on metallic surfaces. The article shows that spontaneous symmetry breaking occurs for many quasi-1D systems on both semiconductor and metal surfaces at low temperature.

Naturally nano: synthesis of versatile bio-inpired monodisperse microspheres from Bacillus spores and their applications

2016 ◽  
Vol 18 (1) ◽  
pp. 186-196 ◽  
Author(s):  
Zhiming Zeng ◽  
Yin Zhong ◽  
Huicui Yang ◽  
Ruihua Fei ◽  
Rui Zhou ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Efficient Approach ◽  
Bacillus Spores

A novel class of bionanocomposites based on monodisperse microparticles containing metal nanoparticles including Au, Pd, Ag and Pt were synthesized and characterized using a simple and efficient approach.

scholarly journals Roughness controlled superhydrophobicity on single nanometer length scale with metal nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28696-28702 ◽  
Author(s):  
Gert H. ten Brink ◽  
Nolan Foley ◽  
Darin Zwaan ◽  
Bart J. Kooi ◽  
George Palasantzas
Keyword(s):  
Metal Nanoparticles ◽  
Gas Phase ◽  
Copper Nanoparticles ◽  
Water Droplet ◽  
Length Scale ◽  
Hydrophobic Surfaces ◽  
Nanostructured Surfaces ◽  
Nanometer Length Scale ◽  
Hydrophilic And Hydrophobic Surfaces

Here we demonstrate water droplet pinning onto nanostructured surfaces via control of roughness on a single nanometer length-scale generated by deposition of preformed gas phase distinct copper nanoparticles on hydrophilic and hydrophobic surfaces.

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