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Article
Open AccessPlanar hyperbolic polaritons in 2D van der Waals materials
Anisotropic planar polaritons - hybrid electromagnetic modes mediated by phonons, plasmons, or excitons - in biaxial two-dimensional (2D) van der Waals crystals have attracted significant attention due to thei...
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Article
Open AccessNanophotonic biosensors harnessing van der Waals materials
Low-dimensional van der Waals (vdW) materials can harness tightly confined polaritonic waves to deliver unique advantages for nanophotonic biosensing. The reduced dimensionality of vdW materials, as in the cas...
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Article
Open AccessImage polaritons in boron nitride for extreme polariton confinement with low losses
Polaritons in two-dimensional materials provide extreme light confinement that is difficult to achieve with metal plasmonics. However, such tight confinement inevitably increases optical losses through various...
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Article
Graphene acoustic plasmon resonator for ultrasensitive infrared spectroscopy
One of the fundamental hurdles in plasmonics is the trade-off between electromagnetic field confinement and the coupling efficiency with free-space light, a consequence of the large momentum mismatch between t...
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Article
Open AccessGraphene-enabled and directed nanomaterial placement from solution for large-scale device integration
Directed placement of solution-based nanomaterials at predefined locations with nanoscale precision limits bottom-up integration in semiconductor process technology. We report a method for electric-field-assis...
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Article
Polaritons in layered two-dimensional materials
In recent years, enhanced light–matter interactions through a plethora of dipole-type polaritonic excitations have been observed in two-dimensional (2D) layered materials. In graphene, electrically tunable and...
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Article
Electronic transport and device prospects of monolayer molybdenum disulphide grown by chemical vapour deposition
Layered transition metal dichalcogenides display a wide range of attractive physical and chemical properties and are potentially important for various device applications. Here we report the electronic transpo...
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Article
Photocurrent in graphene harnessed by tunable intrinsic plasmons
Graphene’s optical properties in the infrared and terahertz can be tailored and enhanced by patterning graphene into periodic metamaterials with sub-wavelength feature sizes. Here we demonstrate polarization-s...
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Article
Dam** pathways of mid-infrared plasmons in graphene nanostructures
Plasmon is the quantum of the collective oscillation of electrons. How plasmon loses its energy (or dam**) plays a pivotal role in plasmonic science and technology. Graphene plasmon is of particular interest...
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Article
Photoconductivity of biased graphene
Graphene is a promising candidate for optoelectronic applications such as photodetectors, terahertz imagers and plasmonic devices. The origin of the photoresponse in graphene junctions has been studied extensi...
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Graphene applications in electronics and photonics
Graphene is a material with outstanding properties that make it an excellent candidate for advanced applications in future electronics and photonics. The potential of graphene in high-speed analog electronics ...
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Article
Open AccessLight–matter interaction in a microcavity-controlled graphene transistor
Graphene has extraordinary electronic and optical properties and holds great promise for applications in photonics and optoelectronics. Demonstrations including high-speed photodetectors, optical modulators, p...
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Article
Tunable infrared plasmonic devices using graphene/insulator stacks
The collective oscillation of carriers—the plasmon1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17—in graphene has many desirable properties, including tunability and low loss11,12,13,14,16,17. However, in single-layer ...
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Article
High-frequency, scaled graphene transistors on diamond-like carbon
Graphene, the one-atom-thick layered form of carbon, shows promise for use in high-frequency microelectronics devices. A team based at the IBM Thomas J. Watson Research Center in New York has now identified a ...
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Article
The origins and limits of metal–graphene junction resistance
A high-quality junction between graphene and metallic contacts is crucial in the creation of high-performance graphene transistors. In an ideal metal–graphene junction, the contact resistance is determined sol...
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Article
Studies of Si Surface Chemistry and Epitaxy Using Scanning Tunneling Microscopy and Spectroscopy
We apply scanning tunneling microscopy (STM) and spectroscopy (STS) to study the reaction of NH3 with Si(111)-(7×7), and the epitaxial growth of CaF2 on Si(11). By a combination of topographs and atom-resolved sp...
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Applications: Nanoelectronics and Nanomagnetics
In the last 10 years, the state of the art in nanoelectronics, including nanomagnetics, has rapidly gone from devices at or above 100 nm in size to the realm of 30 nm and below, with a well-defined pathway to ...
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Article
Thermal infrared emission from biased graphene
The high carrier mobility1,2 and thermal conductivity3,4 of graphene make it a candidate material for future high-speed electronic devices5. Although the thermal behaviour of high-speed devices can limit their pe...
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Graphene photodetectors for high-speed optical communications
Although silicon has dominated solid-state electronics for more than four decades, a variety of other materials are used in photonic devices to expand the wavelength range of operation and improve performance....
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Progress in Carbon Nanotube Electronics and Photonics
In electronics and photonics, intrinsic properties of semiconducting materials play a dominant role in achieving high-performance devices and circuits. In this respect, carbon nanotubes are prime candidates be...
