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This paper presents a systematic study of two and one dimensional honeycomb structure of boron nitride (BN) using first-principles plane wave method. Two-dimensional (2D) graphene like BN is a wide band gap semiconductor with ionic bonding.…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 M. Topsakal , E. Akturk , S. Ciraci

We present a fast method to fabricate high quality heterostructure devices by picking up crystals of arbitrary sizes. Bilayer graphene is encapsulated with hexagonal boron nitride to demonstrate this approach, showing good electronic…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 P. J. Zomer , M. H. D. Guimarães , J. C. Brant , N. Tombros , B. J. van Wees

The United States Department of Energy (DOE) has set ambitious targets for hydrogen storage materials for onboard light-duty cars which are to be achieved by 2027. One of the major problems in solid hydrogen storage materials is the…

Materials Science · Physics 2023-12-12 Sourabh Singha , Abhijit Chatterjee

Ionic transport in nano- to sub-nano-scale pores is highly dependent on translocation barriers and potential wells. These features in the free-energy landscape are primarily the result of ion dehydration and electrostatic interactions. For…

Mesoscale and Nanoscale Physics · Physics 2020-12-01 Subin Sahu , Michael Zwolak

Encapsulating graphene in hexagonal Boron Nitride has several advantages: the highest mobilities reported to date are achieved in this way, and precise nanostructuring of graphene becomes feasible through the protective hBN layers.…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Yongping Du , Ning Xu , Xianqing Lin , Antti-Pekka Jauho

We investigate tunneling in metal-insulator-metal junctions employing few atomic layers of hexagonal boron nitride (hBN) as the insulating barrier. While the low-bias tunnel resistance increases nearly exponentially with barrier thickness,…

Mesoscale and Nanoscale Physics · Physics 2019-03-26 U. Chandni , K. Watanabe , T. Taniguchi , J. P. Eisenstein

Imidazole and 1,2,3-triazole are promising hydrogen-bonded heterocycles that conduct protons via a structural mechanism and whose derivatives are present in systems ranging from biological proton channels to proton exchange membrane fuel…

Chemical Physics · Physics 2021-10-28 Austin O. Atsango , Mark E. Tuckerman , Thomas E. Markland

Using variable temperature scanning tunneling microscopy and dI/dz barrier height spectroscopy, the structure of water on h-BN/Rh(111) nanomesh has been investigated. Below its desorption temperature, two distinct phases of water…

Neutron Compton Scattering measurements presented here of the momentum distribution of hydrogen in $KH_2PO_4$ (KDP) just above and well below the ferroelectric transition temperature show clearly that the proton is coherent over both sites…

Statistical Mechanics · Physics 2009-11-07 G. F. Reiter , J. Mayers , P. Platzman

Insulating hexagonal boron nitride (hBN) films with precisely controlled thickness are ideal dielectric components to modulate various interfaces in electronic devices. To achieve this, high-quality hBN with controlled atomic configurations…

The two-dimensional nanomaterial, hexagonal boron nitride (hBN) was cleanly transferred via a blister-based laser-induced forward-transfer method. The transfer was performed utilizing femtosecond and nanosecond laser pulses for separation…

Despite being only one-atom thick, defect-free graphene is considered to be completely impermeable to all gases and liquids. This conclusion is based on theory and supported by experiments that could not detect gas permeation through…

Anion exchange membranes are used in alkaline fuel cells and offer a promising alternative to the more expensive proton exchange membrane fuel cells. However, hydroxide ion conductivity in anion exchange membranes is low, and the quest for…

Soft Condensed Matter · Physics 2024-04-16 Mohammed Al Otmi , Ping Lin , William Schertzer , Coray M. Colina , Rampi Ramprasad , Janani Sampath

Production of metallic hydrogen is one of the top three open quests of physics. Recent low-temperature experiments report different metallization pressures, varying from 360GPa to 490GPa. In this work, we simulate structural properties,…

Materials Science · Physics 2020-01-29 Lorenzo Monacelli , Ion Errea , Matteo Calandra , Francesco Mauri

A new interlayer force-field for layered hexagonal boron nitride (h-BN) based structures is presented. The force-field contains three terms representing the interlayer attraction due to dispersive interactions, repulsion due to anisotropic…

Materials Science · Physics 2014-03-13 Itai Leven , Ido Azuri , Leeor Kronik , Oded Hod

The predicted formation of moire superlattices leading to confined excitonic states in heterostructures formed by stacking two lattice mismatched transition metal dichalcogenide (TMD) monolayers was recently experimentally confirmed. Such…

We have investigated the effects of either distorting hydrogen bonds or removing proton degeneracy on the thermodynamic properties of a minimal model for associating liquids. The presence of two liquid phases and a density anomaly is…

Soft Condensed Matter · Physics 2007-05-23 Aline Balladares , Vera B. Henriques , Marcia C. Barbosa

Positions of protons in DNA hydrogen bonds are fundamental for the fidelity of the replication process. Because the hydrogen bond is partially covalent the electronic structure of DNA plays an important role in the replication process.…

Strongly Correlated Electrons · Physics 2007-05-23 Chun-Min Chang , A. H. Castro Neto , A. R. Bishop

Using first-principles calculations in combination with the Eliashberg formalism, we systematically investigated phonon-mediated superconductivity in two-dimensional (2D) metal-boride crystals, consisting of a boron honeycomb network doped…

Superconductivity · Physics 2021-12-09 Cem Sevik , Mikhail Petrov , Jonas Bekaert , Milorad V. Milošević

The paper describes the transport of the elastically and diffractively scattered protons in the proton-proton interactions at the LHC for the high beta* runs. A parametrisation of the attered proton transport through the LHC magnetic…

Instrumentation and Detectors · Physics 2012-09-27 Maciej Trzebinski , Rafal Staszewski , Janusz Chwastowski