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| Open AccessLaser-induced plasmonic colours on metals
The use of metal nanostructures for surface colourization has attracted considerable interest following recent developments in plasmonics. Here, Guayet al. use a bottom-up approach where picosecond laser pulses can produce a full palette of non-iridescent colours on silver, gold, copper, and aluminium.
- Jean-Michel Guay
- , Antonino Calà Lesina
- & Arnaud Weck
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| Open AccessWell-defined porous membranes for robust omniphobic surfaces via microfluidic emulsion templating
Designing mechanically and chemically robust liquid-repellent surfaces remains a longstanding challenge. Here, Wang and colleagues report a microfluidic emulsion templating strategy to fabricate bioinspired omniphobic porous membranes with remarkable durability.
- Pingan Zhu
- , Tiantian Kong
- & Liqiu Wang
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| Open AccessOriented graphene nanoribbons embedded in hexagonal boron nitride trenches
Graphene nanoribbons are promising candidates for 2D material electrical interconnects; however, the top-down fabrication of nanoribbons has remained a challenge. Here, Chenet al. have used a hexagonal boron nitride template to grow narrow, integrated graphene nanoribbons with small bandgaps.
- Lingxiu Chen
- , Li He
- & Mianheng Jiang
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| Open AccessA general patterning approach by manipulating the evolution of two-dimensional liquid foams
Ostwald ripening is thermodynamically favoured in many liquid and gas systems, where small particles tend to dissolve into large ones. Against this effect, Huanget al. use patterned microstructures to guide the evolution of two-dimensional liquid foams as a platform for the assembly of nanoparticles.
- Zhandong Huang
- , Meng Su
- & Yanlin Song
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| Open AccessSub-wavelength modulation of χ(2) optical nonlinearity in organic thin films
Materials with spatially modulated nonlinear optical properties are used for quasi-phase matching. Here, Yanet al. exploit the nonlinearity of intermolecular charge transfer states together with oblique-angle deposition to achieve nanoscale modulation of the second-order susceptibility.
- Yixin Yan
- , Yakun Yuan
- & Noel C. Giebink
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| Open AccessTopology-generating interfacial pattern formation during liquid metal dealloying
Liquid metal dealloying produces topologically complex nanoporous structures, however little is known about how they form. Here, the authors use mesoscale phase-field modeling and experiments to show that structure formation is governed by both interfacial spinodal decomposition and diffusion-coupled growth.
- Pierre-Antoine Geslin
- , Ian McCue
- & Alain Karma
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| Open AccessHelicity multiplexed broadband metasurface holograms
The demonstration of visible frequency metasurfaces with broadband optical response is challenging due to plasmonic losses and non-uniform nanofabrication. Here, Wenet al. demonstrate a helicity multiplexed metasurface hologram capable of achieving high efficiency and image quality in the visible and near infrared.
- Dandan Wen
- , Fuyong Yue
- & Xianzhong Chen
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| Open AccessCritical heat flux maxima during boiling crisis on textured surfaces
Cooling hot surfaces by boiling water is widely practiced, but the amount of heat transfer is normally constrained by vapour layer formation at sufficiently high temperatures. Here, the authors report the maximum in the critical heat flux on textured hydrophilic surfaces at an intermediate texture density.
- Navdeep Singh Dhillon
- , Jacopo Buongiorno
- & Kripa K. Varanasi
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| Open AccessPolarization-independent actively tunable colour generation on imprinted plasmonic surfaces
Plasmonic nanostructures are a promising alternative to conventional pixels, where their characteristics at the nanoscale offer many benefits. Franklin et al. combine plasmonic surfaces with liquid crystals to create voltage-tunable polarization-independent color pixels for reflective displays.
- Daniel Franklin
- , Yuan Chen
- & Debashis Chanda
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| Open AccessPatterning two-dimensional chalcogenide crystals of Bi2Se3 and In2Se3 and efficient photodetectors
Two-dimensional chalcogenides offer great potential in electronics, but accurate control of their growth is difficult. Here, the authors combine microintaglio printing and van der Waals epitaxy to pattern various large-area arrays of single-crystal chalcogenides with remarkable properties.
- Wenshan Zheng
- , Tian Xie
- & Hailin Peng
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| Open AccessSub-15-nm patterning of asymmetric metal electrodes and devices by adhesion lithography
Electron-beam lithography is often used for patterning of asymmetric metal electrodes for nanoscale devices, but suffers from several limitations. Here, the authors report a new adhesion lithography process, which allows for high-throughput and simple fabrication of nanogap metal electrodes.
- David J. Beesley
- , James Semple
- & John C. deMello
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| Open AccessMultiplexed biomimetic lipid membranes on graphene by dip-pen nanolithography
The sensitivity and selectivity of graphene-based biosensors depends on attaching various functional groups to graphene. Hirtz et al. use dip-pen nanolithography to directly write phospholipid membranes on graphene, which enables multiplexed and heterogeneous non-covalent functionalization.
- Michael Hirtz
- , Antonios Oikonomou
- & Aravind Vijayaraghavan
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Metallized DNA nanolithography for encoding and transferring spatial information for graphene patterning
The structuring of graphene is important towards its use in electronic applications. Here Strano et al. develop a fast and efficient lithography process enabling the transfer of shape information from self-assembled DNA templates to custom graphene patterns at a resolution of about 10 nm.
- Zhong Jin
- , Wei Sun
- & Michael S. Strano
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Surface-passivated GaAsP single-nanowire solar cells exceeding 10% efficiency grown on silicon
The use of III-V semiconductor nanowires can overcome the need for lattice matching in multi-junction solar cells, which restricts the choice of materials and their bandgaps. This work demonstrates efficient solar cells with GaAsP single nanowires with tunable bandgap and grown on low-cost Si substrates.
- Jeppe V. Holm
- , Henrik I. Jørgensen
- & Martin Aagesen