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oblique angle deposition and its applications in plasmonics

Frontiers of physics 2014年第1期9卷 47-59页

作者： Yizhuo He Junxue Fu Yiping Zhao Department of Physics and Astronomy and Nanoscale Science and Engineering Center University of Georgia Athens Georgia 30602 USA Department of Physics Hong Kong Baptist University Kowloon Tong Hong Kong China

Plasmonics based on localized surface plasmon resonance （LSPR） has found many exciting appli- cations recently. Those applications usually require a good morphological and structural control of metallic nanostructures. oblique angle deposition （OAD） has been demonstrated as a powerful technique for various plasmonic applications due to its advantages in controlling the size, shape, and composition of metallic nanostructures. In this review, we focus on the fabrication of metallic nanostructures by OAD and their applications in plasmonics. After a brief introduction to OAD technique, recent progress of applying OAD in fabricating noble metallic nanostructures for LSPR sensing, surface-enhanced Raman scattering, surface-enhanced infrared absorption, metal-enhanced fluorescence, and metamaterials, and their corresponding properties are reviewed. The future requirements for OAD plasmonics applications are also discussed.

关键词： oblique angle deposition glancing angle deposition Plasmonics localized surfaceplasmon resonance surface-enhanced Raman spectroscopy surface-enhanced infrared absorption,metal-enhanced fluorescence metamaterial

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The Optical Properties and the Structure of CulnS2 Thin Films Deposited by oblique angle deposition Technique

The Optical Properties and the Structure of CulnS2 Thin Film...

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The 2012 International Conference on Advanced Material and Manufacturing Science(ICAMMS 2012)

作者： Xiang Peng Yue Zhao Yanli Ding Mingtao Zhou Jinhe Shi Lirong Wang Xiaoyan Liang Jiahua Min Department of Electronic Information Materials Shanghai Leading Academic DisciplinesShanghai University

The oblique angle deposition(OAD) technique was used to deposit copper indium disulfide(CuInS films onto glass substrates by a vacuum thermal evaporation method.The powdei source used in this work was obtained from the crushed CuInS polycrystalline ingot grown by Vertical Bridgeman method.In order to study the influences of depositing angle on the optical property and the structure of the CuInS films,the depositing angle 6 was varied from 10° to 70° with a 30° gradient.These films were characterized by SEM,XRD and UV-Vis spectrophotometer.The results showed that the optical property and the structure of the films were closely related to the depositing angle 0.When the depositing angle 9 increased,the band gap increased and the intensity of(112) characteristic peak of the CuInS films decreased.

关键词： CuInS2 thin films oblique angle deposition vacuum thermal evaporation

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Monolithic integration of nanorod arrays on microfluidic chips for fast and sensitive one-step immunoassays

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Microsystems & Nanoengineering 2021年第4期7卷 139-148页

作者： Ye Wang Jiongdong Zhao Yu Zhu Shurong Dong Yang Liu Yijun Sun Liling Qian Wenting Yang Zhen Cao College of Information Science and Electronic Engineering Zhejiang University310027 HangzhouPeople's Republic of China Suzhou Institute of Nano-tech and Nano-Bionics Chinese Academy of Sciences215123 SuzhouPeople's Republic of China Hangzhou Global Scientific and Technological Innovation Center Zhejiang University310018 HangzhouPeople's Republic of China Children’s Hospital of Fudan University ShanghaiPeople’s Republic of China Genenexus Technology Corporation ShanghaiPeople's Republic of China

Here,we present integrated nanorod arrays on microfluidic chips for fast and sensitive flow-through immunoassays of physiologically relevant macromolecules.Dense arrays of Au nanorods are easily fabricated through one-step oblique angle deposition,which eliminates the requirement of advanced lithography methods.We report the utility of this plasmonic structure to improve the detection limit of the cardiac troponin I(cTnI)assay by over 6x 105-fold,reaching down to 33.9fg mL^(-1)(-1.4fM) compared with an identical assay on glass substrates.Through monolithic integration with microfluidic elements,the device enables a flow-through assay for quantitative detection of cTnI in the serum with a detection sensitivity of 6.9 pg mL^(-1)(-0.3 pM)in<6 min,which was 4000 times lower than conventional glass devices.This ultrasensitive detection arises from the large surface area for antibody conjugation and metal-enhanced fluorescent signals through plasmonic nanostructures.Moreover,due to the parallel arrangement of flow paths,simultaneous detection of multiple cancer biomarkers,including prostate-specific antigen and carcinoembryonic antigen,has been fulfilled with increased signal-to-background ratios.Given the high performance of this assay,together with its simple fabrication process that is compatible with standard mass manufacturing techniques,we expect that the prepared integrated nanorod device can bring on-site point-of-care diagnosis closer to reality.

关键词： Nanorods Plasmonics Immunoassay oblique angle deposition

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