Fabrication of suspended, three-dimensional chiral plasmonic nanostructures with single-step electron-beam lithography

Leong, Eng Choon; Deng, Jie; Khoo, Eng Huat; Wu, Siji; Phua, Wee Kee; Liu, Yan Jun

doi:10.1039/c5ra17705g

Cited by 16 publications

(11 citation statements)

References 42 publications

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“…One of the most promising techniques for designing chiral nanostructures is electron-beam (e-beam) lithography. , Giessen and co-workers reported a C 4 -symmetric corner-stacked metallic nanorod system as the plasmonic analog of the Born–Kuhn model . The corner-stacked nanorods were fabricated with a 60 nm vertical gap using a two-step e-beam lithography procedure.…”

Section: Structural Chirality and Self-assemblymentioning

confidence: 99%

Nanophotonic Approaches for Chirality Sensing

Warning¹,

Miandashti²,

McCarthy³

et al. 2021

ACS Nano

133

154

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Chiral nanophotonic materials are promising candidates for biosensing applications because they focus light into nanometer dimensions, increasing their sensitivity to the molecular signatures of their surroundings. Recent advances in nanomaterial-enhanced chirality sensing provide detection limits as low as attomolar concentrations (10–18 M) for biomolecules and are relevant to the pharmaceutical industry, forensic drug testing, and medical applications that require high sensitivity. Here, we review the development of chiral nanomaterials and their application for detecting biomolecules, supramolecular structures, and other environmental stimuli. We discuss superchiral near-field generation in both dielectric and plasmonic metamaterials that are composed of chiral or achiral nanostructure arrays. These materials are also applicable for enhancing chiroptical signals from biomolecules. We review the plasmon-coupled circular dichroism mechanism observed for plasmonic nanoparticles and discuss how hotspot-enhanced plasmon-coupled circular dichroism applies to biosensing. We then review single-particle spectroscopic methods for achieving the ultimate goal of single-molecule chirality sensing. Finally, we discuss future outlooks of nanophotonic chiral systems.

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Section: Structural Chirality and Self-assemblymentioning

confidence: 99%

Nanophotonic Approaches for Chirality Sensing

Warning¹,

Miandashti²,

McCarthy³

et al. 2021

ACS Nano

133

154

View full text Add to dashboard Cite

show abstract

“…The top–down method includes direct laser writing [ 65 , 66 , 67 , 68 , 69 ], focused ion beam lithography [ 70 , 71 , 72 ], glancing-angle deposition [ 73 , 74 ], and electron beam lithography [ 76 , 77 , 78 , 79 , 80 ]. One earlier typical chiral nanostructure is a helix or spiral with intrinsic twist.…”

Section: Chirality Plasmonic Metasurfacementioning

confidence: 99%

Recent Advances of Plasmonic Nanoparticles and their Applications

et al. 2018

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In the past half-century, surface plasmon resonance in noble metallic nanoparticles has been an important research subject. Recent advances in the synthesis, assembly, characterization, and theories of traditional and non-traditional metal nanostructures open a new pathway to the kaleidoscopic applications of plasmonics. However, accurate and precise models of plasmon resonance are still challenging, as its characteristics can be affected by multiple factors. We herein summarize the recent advances of plasmonic nanoparticles and their applications, particularly regarding the fundamentals and applications of surface plasmon resonance (SPR) in Au nanoparticles, plasmon-enhanced upconversion luminescence, and plasmonic chiral metasurfaces.

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“…In recent years, surface plasmons and related devices [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23] have been thoroughly investigated due to their potentially wide applications in nanophotonics [24,25,26,27,28,29,30,31,32,33,34,35,36,37,38], biology [39,40,41,42,43,44,45], spectroscopy [46,47,48,49,50,51], and so on. They are capable of manipulating electromagnetic waves [52,53,54,55,56,57,58,59,60,61,62] at the nanometer scale to achieve all-optical integration, providing an effective way to develop smaller, faster and more efficient devices.…”

Section: Introductionmentioning

confidence: 99%

Metamaterial Lensing Devices

Zhou

et al. 2019

Molecules

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In recent years, the development of metamaterials and metasurfaces has drawn great attention, enabling many important practical applications. Focusing and lensing components are of extreme importance because of their significant potential practical applications in biological imaging, display, and nanolithography fabrication. Metafocusing devices using ultrathin structures (also known as metasurfaces) with superlensing performance are key building blocks for developing integrated optical components with ultrasmall dimensions. In this article, we review the metamaterial superlensing devices working in transmission mode from the perfect lens to two-dimensional metasurfaces and present their working principles. Then we summarize important practical applications of metasurfaces, such as plasmonic lithography, holography, and imaging. Different typical designs and their focusing performance are also discussed in detail.

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Fabrication of suspended, three-dimensional chiral plasmonic nanostructures with single-step electron-beam lithography

Abstract: Suspended 3D chiral plasmonic nanostructure fabricated with only one-step electron-beam lithography.

Cited by 16 publications

References 42 publications

Nanophotonic Approaches for Chirality Sensing

Nanophotonic Approaches for Chirality Sensing

Recent Advances of Plasmonic Nanoparticles and their Applications

Metamaterial Lensing Devices

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