Journal ArticleDOI
Large-scale fabrication of plasmonic gold nanohole arrays for refractive index sensing at visible region
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In this article, a large-scale gold nanohole arrays based on the versatile nanosphere lithography technique was designed and fabricated for optical enhancing component and transparent conductive electrode for opto-electric devices.Abstract:
We present the design and fabrication of large-scale gold nanohole arrays based on the versatile nanosphere lithography technique. The gold nanohole arrays exhibit two surface plasmonic resonance related transmission peaks and show a sensitive response to refractive index. The working wavelength and sensitivity can be tuned by changing the hole diameter and hole depth. A sensitivity of 125 nm/refractive index unit is obtained in the visible region. Our quasi-infinite gold nanohole arrays film can serve as an optical enhancing component while also can serve as a transparent conductive electrode for the opto-electric devices.read more
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Journal ArticleDOI
Recent advances in surface plasmon resonance imaging: detection speed, sensitivity, and portability
Youjun Zeng,Rui Hu,Lei Wang,Dayong Gu,Jianan He,Shu-Yuen Wu,Ho-Pui Ho,Xuejin Li,Junle Qu,Bruce Z. Gao,Yonghong Shao +10 more
TL;DR: The recent advances in Surface plasmon resonance technologies focusing on detection speed, sensitivity, and portability are described and significant advances of the vast developments in nanotechnology-associated SPR sensing for sensitivity enhancements are reviewed.
Journal ArticleDOI
Spatial optical crosstalk in CMOS image sensors integrated with plasmonic color filters.
TL;DR: The small pixel size deteriorates the filtering performance of nanocross color filters and induces substantial spatial color crosstalk, which is compatible to pigmented filters in a state-of-the-art backside illumination CIS.
Journal ArticleDOI
Flexible Nanoholey Patches for Antibiotic-Free Treatments of Skin Infections
Chengnan Li,Chengnan Li,Ran Ye,Julie Bouckaert,Amaia Zurutuza,Djamel Drider,Tetiana Dumych,Solomiya Paryzhak,Volodymyr Vovk,Rostyslav Bilyy,Sorin Melinte,Musen Li,Rabah Boukherroub,Sabine Szunerits +13 more
TL;DR: The development of a flexible patch allowing a rapid and highly efficient treatment of subcutaneous wound infections via photothermal irradiation is presented here and no loss in efficiency is observed upon multiple use of these patches during in vivo experiments because of their robustness.
Journal ArticleDOI
The extraordinary optical transmission and sensing properties of Ag/Ti composite nanohole arrays
TL;DR: This study demonstrates that besides the shape, size, and measurement configuration, the resonances and sensitivities of nanohole arrays can be effectively predicted and tuned by the composition of a plasmonic composite.
Journal ArticleDOI
Plasmonic Fluorescence Enhancement in Diagnostics for Clinical Tests at Point-of-Care: A Review of Recent Technologies.
TL;DR: A review of existing fluorescence-based sensors that employ various strategies for fluorescence enhancement via nanostructures and have demonstrated the potential for sensitive and rapid diagnostic testing can be found in this article .
References
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Journal ArticleDOI
Extraordinary optical transmission through sub-wavelength hole arrays
Thomas W. Ebbesen,Thomas W. Ebbesen,Henri J. Lezec,H. F. Ghaemi,Tineke Thio,Peter A. Wolff,Peter A. Wolff +6 more
TL;DR: In this article, the optical properties of submicrometre cylindrical cavities in metallic films were explored and it was shown that arrays of such holes display highly unusual zero-order transmission spectra at wavelengths larger than the array period, beyond which no diffraction occurs.
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Plasmonic nanorod metamaterials for biosensing.
Andrei V. Kabashin,Paul R. Evans,S. Pastkovsky,William Hendren,Gregory A. Wurtz,Gregory A. Wurtz,R. Atkinson,Robert Pollard,Viktor A. Podolskiy,Anatoly V. Zayats +9 more
TL;DR: This work demonstrates an improvement in biosensing technology using a plasmonic metamaterial that is capable of supporting a guided mode in a porous nanorod layer and provides an enhanced sensitivity to refractive-index variations of the medium between the rods.
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Multiscale patterning of plasmonic metamaterials.
TL;DR: A high-throughput nanofabrication technique that combines the ability of interference lithography to produce wafer-scale nanopatterns with the versatility of soft lithography, and use it to create plasmonic metamaterials with novel optical properties is presented.
Journal ArticleDOI
Label-free biological and chemical sensors
Heather K. Hunt,Andrea M. Armani +1 more
TL;DR: A brief overview of the different types of biosensors and the critical parameters governing their performance will be given and a more in-depth discussion of optical devices, surface functionalization methods to increase device specificity, and fluidic techniques to improve sample delivery will be reviewed.
Journal ArticleDOI
Inverted Size-Dependence of Surface-Enhanced Raman Scattering on Gold Nanohole and Nanodisk Arrays
TL;DR: The large tolerance on dimensions and the empty space confined by nanoholes suggest promise for their use as a functional component in sensing, spectroscopy, and photonic devices.