scholarly journals Nanomechanical Strain Concentration on a Two-Dimensional Nanobridge within a Large Suspended Bilayer Graphene for Molecular Mass Detection

2018 ◽  
Vol 1 (12) ◽  
pp. 6752-6759 ◽  
Author(s):  
Julien Chaste ◽  
Amine Missaoui ◽  
Amina Saadani ◽  
Daniel Garcia-Sanchez ◽  
Debora Pierucci ◽  
...  
Keyword(s):  
Molecular Mass ◽  
Bilayer Graphene ◽  
Two Dimensional ◽  
Mass Detection ◽  
Strain Concentration

scholarly journals Unfolding energy spectra of double-periodicity two-dimensional systems: Twisted bilayer graphene and MoS2 on graphene

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Yu-ichiro Matsushita ◽  
Hirofumi Nishi ◽  
Jun-ichi Iwata ◽  
Taichi Kosugi ◽  
Atsushi Oshiyama
Keyword(s):  
Bilayer Graphene ◽  
Energy Spectra ◽  
Two Dimensional ◽  
Twisted Bilayer Graphene

Biosynthetic Studies of the Male Marking Pheromone in Bumblebees by Using Labelled Fatty Acids and Two-Dimensional Gas Chromatography with Mass Detection

ChemPlusChem ◽  
2015 ◽  
Vol 80 (5) ◽  
pp. 839-850 ◽  
Author(s):  
Petr Žáček ◽  
Jiří Kindl ◽  
Kateřina Frišonsová ◽  
Markéta Průchová ◽  
Alena Votavová ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Two Dimensional ◽  
Mass Detection ◽  
Marking Pheromone ◽  
Biosynthetic Studies

Stability and superconductivity of Ca-intercalated bilayer blue phosphorene

2021 ◽  
Author(s):  
Artur Durajski ◽  
Kamil Skoczylas ◽  
Radoslaw Szczesniak
Keyword(s):  
Superconducting State ◽  
Potential Application ◽  
Recent Experiment ◽  
Superconducting Devices ◽  
Bilayer Graphene ◽  
Two Dimensional ◽  
Twisted Bilayer Graphene ◽  
Blue Phosphorene

Superconductivity attracts much interest in two-dimensional compounds due to their potential application in nano-superconducting devices. Inspired by a recent experiment reporting the superconducting state in twisted bilayer graphene, here, based...

scholarly journals Extremely flat band in bilayer graphene

2018 ◽  
Vol 4 (11) ◽  
pp. eaau0059 ◽  
Author(s):  
D. Marchenko ◽  
D. V. Evtushinsky ◽  
E. Golias ◽  
A. Varykhalov ◽  
Th. Seyller ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Bilayer Graphene ◽  
Flat Band ◽  
Honeycomb Lattice ◽  
Band Model ◽  
Two Dimensional ◽  
Band Formation ◽  
Constant Energy ◽  
Mexican Hat ◽  
Band Dispersion

We propose a novel mechanism of flat band formation based on the relative biasing of only one sublattice against other sublattices in a honeycomb lattice bilayer. The mechanism allows modification of the band dispersion from parabolic to “Mexican hat”–like through the formation of a flattened band. The mechanism is well applicable for bilayer graphene—both doped and undoped. By angle-resolved photoemission from bilayer graphene on SiC, we demonstrate the possibility of realizing this extremely flattened band (< 2-meV dispersion), which extends two-dimensionally in a k-space area around the K¯ point and results in a disk-like constant energy cut. We argue that our two-dimensional flat band model and the experimental results have the potential to contribute to achieving superconductivity of graphene- or graphite-based systems at elevated temperatures.

scholarly journals Development of a Method for the Measurement of Human Scent Samples Using Comprehensive Two-Dimensional Gas Chromatography with Mass Detection

Separations ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 232
Author(s):  
Petra Pojmanová ◽  
Nikola Ladislavová ◽  
Štěpán Urban
Keyword(s):  
Gas Chromatography ◽  
Chromatographic Method ◽  
Complex Mixture ◽  
Two Dimensional ◽  
Mass Detection ◽  
Chromatographic System ◽  
Optimal Arrangement ◽  
Complex Samples ◽  
Targeted Analysis ◽  
Optimal Resolution

Every human body is a source of a unique scent, which can be used for medical or forensic purposes. Human skin scent is a complex mixture of more or less volatile compounds with different chemical and physical properties, which often differ significantly in their concentrations. The most efficient technique for separating such complex samples is comprehensive two-dimensional gas chromatography (GC × GC). This work aimed to find the optimal arrangement of a two-dimensional chromatographic system and define a suitable chromatographic method for non-targeted analysis of human scent samples. Four different chromatographic columns (non-polar Rxi-5MS and TG-5HT, medium polar Rxi-17Sil MS and Rtx-200MS) and their different configurations were tested. The best system was the 30 m primary column Rtx-200MS (with the 2 m pre-column Rtx-200MS) and the 1 m secondary column TG-5HT in a reverse configuration. This system achieved the highest theoretical and conditional peak capacities, optimal resolution, and the lowest number of coelutions.

Evaluation of lipoproteins and apolipoproteins in serum of a Tangier patient by micro-scale two-dimensional electrophoresis.

1987 ◽  
Vol 33 (4) ◽  
pp. 468-472 ◽  
Author(s):  
T Manabe ◽  
S Visvikis ◽  
M F Dumon ◽  
M Clerc ◽  
G Siest
Keyword(s):  
Molecular Mass ◽  
Gel Electrophoresis ◽  
Sodium Dodecyl ◽  
Disease Patient ◽  
High Density Lipoproteins ◽  
Two Dimensional ◽  
High Concentration ◽  
Two Dimensional Electrophoresis ◽  
Micro Scale ◽  
Dimensional Electrophoresis

Abstract We examined lipoproteins and apolipoproteins in serum of a Tangier-disease patient. We used three different techniques of micro-scale two-dimensional electrophoresis: (a) no denaturants; (b) with sodium dodecyl sulfate (SDS) used only in the slab gel electrophoresis; (c) and with urea and a detergent used in isoelectric focusing and with SDS in slab gel electrophoresis. By technique a, an extremely low concentration of high-density lipoproteins (HDL) in the Tangier serum was seen, and lipoproteins that cannot form HDL complexes were detected as multiple spots in the acidic (pl 4 approximately 5) and relatively low apparent molecular mass (20,000 approximately 80,000) region. By technique b, Tangier low-molecular-mass lipoproteins were dissociated into their constituent apolipoproteins, and we observed a higher proportion of apoC-III, together with lower proportions of apoA-I and apoA-II, than in the normal HDL fraction. Technique c showed the total content of apolipoproteins in the whole Tangier serum, as several workers have reported. The presence of low-molecular-mass lipoproteins and a high concentration of apoC-III in this lipoprotein fraction characterized the Tangier serum.

Two-dimensional crystallization of membrane proteins

1992 ◽  
Vol 25 (1) ◽  
pp. 1-49 ◽  
Author(s):  
W. Kühlbrandt
Keyword(s):  
High Resolution ◽  
Membrane Proteins ◽  
Molecular Mass ◽  
Solution Nmr ◽  
Two Dimensional ◽  
Foreseeable Future ◽  
Nmr Techniques

In spite of several great breakthroughs, the overall rate of progress in determining high-resolution structures of membrane proteins has been slow. This is entirely due to the scarcity of suitable, well-ordered crystals. Most membrane proteins are multimeric complexes with a composite molecular mass in excess of 50000 Da which puts them outside the range of current solution NMR techniques. For the foreseeable future, detailed information about the structure of large membrane proteins will therefore depend on crystallographic methods.

scholarly journals Bilayer graphene: physics and application outlook in photonics

Nanophotonics ◽  
2015 ◽  
Vol 4 (1) ◽  
pp. 115-127 ◽  
Author(s):  
Hugen Yan
Keyword(s):  
Layered Materials ◽  
Bilayer Graphene ◽  
Layered Material ◽  
Two Dimensional ◽  
Fano Resonances ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Basic Physics ◽  
Gap Opening ◽  
Plasmon Interaction

AbstractLayered materials, such as graphene, transition metal dichacogenides and black phosphorus have attracted lots of attention recently. They are emerging novel materials in electronics and photonics, with tremendous potential in revolutionizing the traditional electronics and photonics industry. Marrying layered material to the nanophotonics is being proved fruitful. With the recent emphasis and development of metasurfaces in nanophotonics, atomically thin materials can find their unique position and strength in this field. In this article, I will focus on one specific two dimensional material: bilayer graphene. Basic physics will be reviewed, such as band-gap opening, electron-phonon interaction, phonon-plasmon interaction and Fano resonances in the optical response. Moreover, I will review the application of bilayer graphene as a sensitive and fast photodetector. An outlook will be given in the final part of the paper.

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