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Subtle Variations in Surface Properties of Black Silicon Surfaces Influence the Degree of Bactericidal Efficiency

Nano-Micro Letters 2018年第2期10卷 239-246页

作者： Chris M.Bhadra Marco Werner Vladimir A.Baulin Vi Khanh Truong Mohammad Al Kobaisi Song Ha Nguyen armandas balcytis Saulius Juodkazis James Y.Wang David E.Mainwaring Russell J.Crawford Elena P.Ivanova School of Science Faculty of Science Engineering and Technology Swinburne University of Technology Departament d’Enginyeria Química Universitat Rovira i Virgili Melbourne Center for Nanofabrication School of Science RMIT University

One of the major challenges faced by the biomedical industry is the development of robust synthetic surfaces that can resist bacterial colonization. Much inspiration has been drawn recently from naturally occurring mechano-bactericidal surfaces such as the wings of cicada(Psaltoda claripennis) and dragonfly(Diplacodes bipunctata) species in fabricating their synthetic analogs. However,the bactericidal activity of nanostructured surfaces is observed in a particular range of parameters reflecting the geometry of nanostructures and surface wettability. Here,several of the nanometer-scale characteristics of black silicon(bSi) surfaces including the density and height of the nanopillars that have the potential to influence the bactericidal efficiency of these nanostructured surfaces have been investigated. The results provide important evidence that minor variations in the nanoarchitecture of substrata can substantially alter their performance as bactericidal surfaces.

关键词： Black silicon Nanoarchitecture Bactericidal efficiency Deep reactive ion etching(DRIE) Neural network analysis

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Spatio-temporal isolator in lithium niobate on insulator

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Opto-Electronic Science 2023年第3期2卷 1-6页

作者： Haijin Huang armandas Balčytis Aditya Dubey Andreas Boes Thach GNguyen Guanghui Ren Mengxi Tan Arnan Mitchell Integrated Photonics and Applications Centre School of EngineeringRMIT UniversityMelbourne VIC 3001Australia School of Electrical and Electronic Engineering The University of AdelaideAdelaide SA 5005Australia Institute for Photonics and Advanced Sensing The University of AdelaideAdelaide SA 5005Australia

In this contribution,we simulate,design,and experimentally demonstrate an integrated optical isolator based on spatiotemporal modulation in the thin-film lithium niobate on an insulator waveguide *** used two cascaded travelling wave phase modulators for spatiotemporal modulation and a racetrack resonator as a wavelength filter to suppress the sidebands of the reverse propagating *** enabled us to achieve an isolation of 27 *** demonstrated suppression of the reverse propagating light makes such isolators suitable for the integration with III-V laser diodes and Erbium doped gain sections in the thin-film lithium niobate on the insulator waveguide platform.

关键词： Isolator lithium niobate modulator

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