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The assembly of plasmonic metal nanoparticles into hot spot surface‐enhanced Raman scattering (SERS) nanocluster probes is a powerful, yet challenging approach for ultrasensitive biosensing. Scaffolding strategies based on self‐complementary peptides and proteins are of increasing interest for these assemblies, but the electronic and the photonic properties of such hybrid nanoclusters remain difficult...
In article number 1703695, Zung‐Hang Wei and co‐workers design a microscaled thermoelectric component featuring a nanogap of varying sizes between the tips. A narrow gap tip generates stronger thermoelectric effects, because the phonon's contribution to thermal conductivity can be virtually neglected. Furthermore, the thermoelectric effects of the nanogap are intensified by adding nanoparticles, which...
This study designs a microscaled thermoelectric component featuring a nanogap of varying size (133–900 nm) between the tips of the component. Electricity and heat are transmitted between the gap of the tips through the thermionic emission of electrons. Because the gaps exhibit a discontinuous structure, the phonon's contribution to thermal conductivity can be virtually neglected, thereby enhancing...
A straightforward method to generate both atomic‐scale sharp and atomic‐scale planar electrodes is reported. The atomic‐scale sharp electrodes are generated by precisely stretching a suspended nanowire, while the atomic‐scale planar electrodes are obtained via mechanically controllable interelectrodes compression followed by a thermal‐driven atom migration process. Notably, the gap size between the...
In article number 1703815, Zongliang Li, Takhee Lee, Dong Xiang, and co‐workers fabricate both atomic‐scale sharp and atomic‐scale planar electrodes by pure mechanical operation, and the gap size between electrodes can be controlled with sub‐angstrom accuracy. With these two achievements, the electron transport as well as Raman scattering in the molecular junctions are well modulated.
Graphene nanogap systems are promising research tools for molecular electronics, memories, and nanodevices. Here, a way to control the propagation of nanogaps in monolayer graphene during electroburning is demonstrated. A tightly focused femtosecond laser beam is used to induce defects in graphene according to selected patterns. It is shown that, contrary to the pristine graphene devices where nanogap...
With narrow and dense nanoarchitectures increasingly adopted to improve optical functionality, achieving the complete wetting of photonic devices is required when aiming at underwater molecule detection over the water‐repellent optical materials. Despite continuous advances in photonic applications, real‐time monitoring of nanoscale wetting transitions across nanostructures with 10‐nm gaps, the distance...
This article reviews recent fabrication methods for surface‐enhanced Raman spectroscopy (SERS) substrates with a focus on advanced nanoarchitecture based on noble metals with special nanospaces (round tips, gaps, and porous spaces), nanolayered 2D materials, including hybridization with metallic nanostructures (NSs), and the contemporary repertoire of nanoarchitecturing with organic molecules. The...
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