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Atomic structure of single-crystalline black phosphorus was studied by high resolution synchrotron-based photoelectron diffraction (XPD). The results show that the topmost phosphorene layer in the black phosphorus is slightly displaced…

Materials Science · Physics 2016-02-03 Luis Henrique de Lima , Lucas Barreto , Richard Landers , Abner de Siervo

Fused silica glass is a material of choice for micromechanical, microfluidic, and optical devices due to its ultimate chemical resistance, optical, electrical, and mechanical performance. Wet etching in hydrofluoric solutions especially a…

Black phosphorus (BP) is a layered material with anisotropic properties. We study interfaces formed by a pentacene monolayer adsorbed on monolayer BP, a prototypical system for BP surface passivation. We place the pentacene monolayer along…

Materials Science · Physics 2022-12-09 Naseem Ud Din , Zhen-Fei Liu

Chemical vapor deposited graphene is nanopatterned by a spherical block-copolymer etch mask. The use of spherical rather than cylindrical block copolymers allows homogeneous patterning of cm-scale areas without any substrate surface…

Mesoscale and Nanoscale Physics · Physics 2014-03-20 Alberto Cagliani , David Mackenzie , Lisa Katharina Tschammer , Filippo Pizzocchero , Kristoffer Almdal , Peter Bøggild

Patterned graphene shows substantial potential for applications in future molecular-scale integrated electronics. Environmental effects are a critical issue in a single layer material where every atom is on the surface. Especially…

Dry synthesis is a highly versatile method for the fabrication of nanoporous metal films, since it enables easy and reproducible deposition of single or multi-layer(s) of nanostructured materials that can find intriguing applications in…

The ability to pattern graphene at low temperatures in a scalable manner is one of the greatest challenges facing graphene industrial adoption today. We demonstrate a simple method for low-temperature gold-catalyzed etching of graphite with…

Applied Physics · Physics 2018-04-25 Ian Carroll , Tanya Klowden , Isabel Alvarez , Henk W. Ch. Postma

We create low-entropy states of neutral atoms by utilizing a conceptually new optical-lattice technique that relies on a high-precision, high-bandwidth synthesis of light polarization. Polarization-synthesized optical lattices provide two…

Lithium niobate (LiNbO$_3$, LN) is a ferroelectric crystal of interest for integrated photonics owing to its large second-order optical nonlinearity and the ability to impart periodic poling via an external electric field. However, on-chip…

Time-periodic light field can dress the electronic states and lead to light-induced emergent properties in quantum materials. While below-gap pumping is regarded favorable for Floquet engineering, so far direct experimental evidence of…

Mesoscale and Nanoscale Physics · Physics 2023-09-21 Shaohua Zhou , Changhua Bao , Benshu Fan , Fei Wang , Haoyuan Zhong , Hongyun Zhang , Peizhe Tang , Wenhui Duan , Shuyun Zhou

Black Phosphorus (bP) has emerged as an interesting addition to the category of two-dimensional materials. Surface-science studies on this material are of great interest, but they are hampered by bP's high reactivity to oxygen and water, a…

Mesoscale and Nanoscale Physics · Physics 2018-10-24 Abhishek Kumar , F. Telesio , S. Forti , A. Al-Temimy , C. Coletti , M. Serrano-Ruiz , M. Caporali , M. Peruzzini , F. Beltram , S. Heun

Using the Tight Binding (TB) parameters extracted from Density Functional Theory (DFT) and Recursive Green's Function method, it is shown that skewed-zigzag black phosphorous (phosphorene) nanoribbons obtain large and tuneable bandgap in…

Mesoscale and Nanoscale Physics · Physics 2019-01-16 Sima Shekarforoush , Farhad Khoeini , Daryoush Shiri

This work presents a selective ultraviolet (UV)-ozone oxidation-chemical etching process that has been used, in combination with laser interference lithography (LIL), for the preparation of GaAs patterned substrates. Further molecular beam…

There have been continuous efforts to seek for novel functional two-dimensional semiconductors with high performance for future applications in nanoelectronics and optoelectronics. In this work, we introduce a successful experimental…

A single atomic layer of black phosphorus, phosphorene, was experimentally realized in 2014. It has a puckered honeycomb lattice structure and a semiconducting electronic structure. In the first part of this paper, we use a simple LCAO…

Mesoscale and Nanoscale Physics · Physics 2015-10-22 Shuhei Fukuoka , Toshihiro Taen , Toshihito Osada

We demonstrate electrically pumped III-nitride edge-emitting laser diodes (LDs) with nanoporous bottom cladding. The LD structure was grown by plasma-assisted molecular beam epitaxy. Highly doped 350 nm thick GaN:Si cladding layer with Si…

This work presents a simply methodology for coating small unilamellar liposomes bearing different degrees of positive charge with polyelectrolyte multilayers using the sequential Layer-by-Layer (LbL) deposition method. The liposomes were…

Label-free spectromicroscopy methods offer the capability to examine complex cellular phenomena. Electron and X-ray-based spectromicroscopy methods, though powerful, have been hard to implement with hydrated objects due to the vacuum…

Phosphorene is a new two-dimensional material composed of a single or few atomic layers of black phosphorus. Phosphorene has both an intrinsic tunable direct band gap and high carrier mobility values, which make it suitable for a large…

We report on the fabrication of two-dimensional periodic photonic nanostructures by nanoimprint lithography and dry etching, and their integration into a 1-{\mu}m-thin mono-crystalline silicon solar cell. Thanks to the periodic…

Mesoscale and Nanoscale Physics · Physics 2012-12-17 Christos Trompoukis , Ounsi El Daif , Valérie Depauw , Ivan Gordon , Jef Poortmans