Localized Surface Plasmon Resonance in Lithographically Fabricated Single Gold Nanowires

Chen, Hsiang-An; Lin, Hsin‐Yu; Lin, Heh‐Nan

doi:10.1021/jp1014725

Cited by 18 publications

(13 citation statements)

References 37 publications

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“…Mechanical SPL (nanomachining) uses the mechanical force exerted by the tip to induce the selective removal of material from a surface. It has been successfully applied to modify solid substrates 107 and films of polymers 108 . The same approach has also been used for the local removal of parts of self-assembled monolayers (SAMs) and Langmuir-Blodgett (LB) films (nanoshaving) 109 .…”

Section: Additional Spl Methodsmentioning

confidence: 99%

Advanced scanning probe lithography

2014

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The nanoscale control afforded by scanning probe microscopes has prompted the development of a wide variety of scanning probe-based patterning methods. Some of these methods have demonstrated a high degree of robustness and patterning capabilities that are unmatched by other lithographic techniques. However, the limited throughput of scanning probe lithography has prevented their exploitation in technological applications. Here, we review the fundamentals of scanning probe lithography and its use in materials science and nanotechnology. We focus on the methods and processes that offer genuinely lithography capabilities such as those based on thermal effects, chemical reactions and voltage-induced processes. Published in:Nature Nanotechnology 9, 577-587 (2014) Progress in nanotechnology depends on the capability to fabricate, position, and interconnect nanometre-scale structures. A variety of materials and systems such as nanoparticles, nanowires, two-dimensional materials like graphene and transition metal dichalcogenides, plasmonics materials, conjugated polymers and organic semiconductors are finding applications in nanoelectronics, nanophotonics, organic electronics and biomedical applications. The success of many of the above applications relies on the existence of suitable nanolithography approaches. However, patterning materials with nanoscale features aimed at improving integration and device performance poses several challenges. The limitations of conventional lithography techniques related to resolution, operational costs and lack of flexibility to pattern organic and novel materials have motivated the development of unconventional fabrication methods [1][2][3] .Since the first patterning experiments performed with a scanning probe microscope in the late 80s, scanning probe lithography (SPL) has emerged as an alternative lithography for academic research that combines nanoscale feature-size, relatively low technological requirements and the ability to handle soft matter from small organic molecules to proteins and polymers. Scanning probe lithography experiments have provided striking examples of its capabilities such as the ability to pattern 3D structures with nanoscale features 4 , the fabrication of the smallest field-effect transistor 5 or the patterning of proteins with 10 nm feature size 6 . Figure 1a shows a general scheme of SPL operation. There is a variety of approaches to modify a material in a probe-surface interface which have generated several SPL methods. Scanning probe lithographies can be either classified by emphasizing the distinction between the general nature of the process, chemical versus physical, or by considering if SPL implies the removal or addition of material. However, we consider it is more inclusive and systematic to classify the different SPL methods in terms of the driving mechanisms used in the patterning process, namely thermal, electrical, mechanical and diffusive methods (Fig. 1b). Challenges in nanoscale lithographyThe workhorse of large volume CMOS fabrication, o...

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Section: Additional Spl Methodsmentioning

confidence: 99%

Advanced scanning probe lithography

2014

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“…The toroidal resonance and magnetic resonance are excited because of the coupling effect of the front and back magnetic dipole pairs of SRRs1617. Actually, the plasmonic metamaterials such as nanorod and nanowire exhibit the electric resonance depending on its geometrical properties and orientation with respect to the illuminating light2122. Utilizing the retardation of the electric resonances induces localized field which resulting in a magnetic dipolar resonances within the intermediate spacer.…”

Section: Resultsmentioning

confidence: 99%

Toroidal Lasing Spaser

Huang

Chen

et al. 2013

Sci Rep

127

106

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Toroidal shapes are often found in bio-molecules, viruses, proteins and fats, but only recently it was proved experimentally that toroidal structures can support exotic high-frequency electromagnetic excitations that are neither electric or magnetic multipoles. Such excitations, known as toroidal moments, could be playing an important role in enhancing inter-molecular interaction and energy transfer due to its higher electromagnetic energy confinement and weaker coupling to free space. Using a model toroidal metamaterial system, we show that coupling optical gain medium with high Q-factor toroidal resonance mode can enhance the single pass amplification to up to 65 dB. This offers an opportunity of creating the “toroidal” lasing spaser, a source of coherent optical radiation that is fueled by toroidal plasmonic oscillations in the nanostructure.

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“…Various nanostructures have been created attempting to achieve different peak position and distinct scattering spectra [29]. One of the prospective ways to obtain strong LSPR of nanoparticles and nanorods is to fabri-cate the structures by exquisite techniques [7], [30]. Compared with these examples, the LSPR spectrum of our Cu 3 Ge NW is broad.…”

Section: Resultsmentioning

confidence: 99%

The Discovery of Plasmon Resonance in Germanide Nanowires Grown on Cu Foil

Hsin

Tsai

Wang

2015

IEEE Trans. Nanotechnology

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Free-standing and single-crystalline Cu 3 Ge nanowires (NWs) were synthesized by a vapor-phase deposition method on the Cu foil. The NWs are grown along the [010] direction via a vapor-solid mechanism. The localized surface plasmon resonance of individual NWs on a Si substrate is investigated using the dark-field scattering spectroscopy. The resonance peak wavelength for NWs with different diameters is observed, which ranges from 500 to 550 nm. This study proves the existence and provides an insight for understanding the LSPR property of free-standing Cu 3 Ge NWs.

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Localized Surface Plasmon Resonance in Lithographically Fabricated Single Gold Nanowires

Cited by 18 publications

References 37 publications

Advanced scanning probe lithography

Advanced scanning probe lithography

Toroidal Lasing Spaser

The Discovery of Plasmon Resonance in Germanide Nanowires Grown on Cu Foil

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