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Under ambient conditions



Structural lubricity under ambient conditions munications

3.9.2017 | Logan Miers

Here, we perform AFM-based lateral manipulation experiments under ambient conditions on gold islands situated on graphite (see the.

A Nature Research Journal Article| Open.

While the propane molecule is repelled by the interface due to a steeply increasing energy penalty ( e ), substantial energy barriers of 4.3 eV ( f ) and 2.3 eV ( g ) are observed for the dissociation of water and oxygen at the interface, respectively. ( a ) A top-view illustration of the model system used for the calculations, consisting of a 19-atom gold cluster on a 3-layer graphite substrate. For improved visualization, the quadratic spline interpolation method was utilized in e – g.

Experimental Adiabatic Quantum Factorization under Ambient

6.12.2017 | Jessica MacAdam

Experimental Adiabatic Quantum Factorization under Ambient Conditions Based on a Solid-State Single Spin System. Kebiao Xu, Tianyu Xie.

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The diamonds are the theoretical calculations taking imperfect initialization and control into consideration, and the dots are from experimental data. The populations on computational basis of the system during the process of the adiabatic factorization. The lines are theoretical predictions with prefect initialization and control.

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers included in the collection have been made free to read.

Single-protein spin resonance spectroscopy under ambient conditions

10.16.2017 | Logan Miers

Single-protein spin resonance spectroscopy under ambient conditions. Fazhan Shi,,,*,; Qi Zhang,,*,; Pengfei Wang,,,*,; Hongbin Sun,; Jiarong Wang,; Xing Rong.

Science 06 Mar 2015 :

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[Also see Perspective by Hemmer and Gomes ]. Electron spin resonance (ESR) signals from a single labeled protein were detected with diamond nitrogen-vacancy centers.

[Also see Perspective by Hemmer and Gomes ]. Electron spin resonance (ESR) signals from a single labeled protein were detected with diamond nitrogen-vacancy centers.

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Mass Spectrometry Sampling Under Ambient Conditions with

11.17.2017 | Jessica MacAdam

Mass Spectrometry Sampling Under Ambient Conditions with Desorption Electrospray Ionization. Zoltán Takáts,; Justin M. Wiseman,; Bogdan Gologan.

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Wiseman, Bogdan Gologan, R. Graham Cooks. By Zoltán Takáts, Justin M.

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Wiseman, Bogdan Gologan, R. Graham Cooks. By Zoltán Takáts, Justin M.

Desorption electrospray ionization (DESI) is carried out by directing electrosprayed charged droplets and ions of solvent onto the surface to be analyzed. A new method of desorption ionization is described and applied to the ionization of various compounds, including peptides and proteins present on metal, polymer, and mineral surfaces.

Structural lubricity under ambient conditions

12.18.2017 | Jessica MacAdam
Under ambient conditions

Nat Commun. 2016 Jun 28;7:12055. doi: 10.1038/ncomms12055. Structural lubricity under ambient conditions. Cihan E(1), İpek S(1), Durgun E(1), Baykara.

The experiments reported here demonstrate the potential for practical lubrication schemes for micro- and nano-electromechanical systems, which would mainly rely on an atomic-scale structural mismatch between the slider and substrate components, via the utilization of material systems featuring clean, atomically flat interfaces under ambient conditions. Despite its fundamental importance, physical mechanisms that govern friction are poorly understood. Ab initio calculations reveal that the gold-graphite interface is expected to remain largely free from contaminant molecules, leading to structurally lubric sliding. Here, we report structurally lubric sliding under ambient conditions at mesoscopic (∼4,000-130,000 nm(2)) interfaces formed by gold islands on graphite. While a state of ultra-low friction, termed structural lubricity, is expected for any clean, atomically flat interface consisting of two different materials with incommensurate structures, some associated predictions could only be quantitatively confirmed under ultra-high vacuum (UHV) conditions so far.

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