Results 71 to 80 of about 206,941 (297)

Observation of a rotational transition in trapped and sympathetically cooled molecular ions

, 2012
We demonstrate rotational excitation of molecular ions that are sympathetically cooled by laser-cooled atomic ions to a temperature as low as ca. 10 mK. The molecular hydrogen ions HD+ and the fundamental rotational transition $(v=0,\, N=0)\rightarrow(v'=
Borodin, A., Hansen, M., Schiller, S., Shen, J.   +3 more
core   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

Characterization of Monosubstituted Benzene Ices

The Astrophysical Journal
Aromatic structures are fundamental for key biological molecules such as RNA and metabolites and the abundances of aromatic molecules on young planets are therefore of high interest.
Elettra L. Piacentino, Aurelia Balkanski, Mahesh Rajappan, Karin I. Öberg   +3 more
doaj   +1 more source

Mechanistic investigation of the surface blackening phenomenon in GH3625 nickel-based superalloy

Journal of Materials Research and Technology
Nickel-based superalloys are extensively used in applications requiring excellent mechanical properties at elevated temperatures. However, the occurrence of surface blackening has led to reduced production efficiency.
Zhicheng Cheng, Yan Yang, Wenzhu Sun, Ao Jiang, Ying Han, Wei Yu   +5 more
doaj   +1 more source

Spectroscopy of free radicals and radical containing entrance-channel complexes in superfluid helium nano-droplets [PDF]

, 2006
The spectroscopy of free radicals and radical containing entrance-channel complexes embedded in superfluid helium nano-droplets is reviewed. The collection of dopants inside individual droplets in the beam represents a micro-canonical ensemble, and as ...
Alkemade U, Arrhenius S, Becker EW, Botschwina P, Botschwina P, Eyring H, Goldschleger IU, Herbst E, Hirschfelder JO, Jeremy M. Merritt, Jochen Küpper, Kim Y, Lehmann K, Lide DR, London F, Neumark DM, Nieto MM, Scoles G, Stone AJ, Van't Hoff JH, Warnatz J, Wayne RP, Western CM   +22 more
core   +3 more sources

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

The genetic inhibition of some pathogenic bacterial isolates related to Enterobacteriaceae by using Different leaves extracts of Cider (Nabag) Zizyphus spina-christa

مجلة بغداد للعلوم, 2012
The plant Zizyphus spina-christa grows wildly in the middle and southern of Iraq locally named Nabag. In this study the antibacterial activity of several different plant extract (alcoholic hot and cold extract 80%, aqueous hot and cold extract) was ...
Baghdad Science Journal
doaj   +1 more source

Slowing and cooling molecules and neutral atoms by time-varying electric field gradients [PDF]

, 1999
A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with calculation. Time-
A. Cable, A. Clairon, A. Lübbert, A. Salop, B. Friedrich, B. Ghaffari, B. P. Anderson, C. Monroe, C. R. Ekstrom, D. Auerbach, D. Herschbach, D. Kakati, D. Kakati, D. P. Katz, D. R. Miller, E. A. Cornell, E. O. Lawrence, E. O. Lawrence, E. S. Chang, E. Tiesinga, G. A. Ising, H. Bethe, H. Gould, H. K. Hughes, H. Pauly, H. von Busch, Harvey Gould, J. D. Weinstein, J. D. Weinstein, J. D. Weinstein, J. Denschlag, J. M. Doyle, Jason A. Maddi, K. D. Bonin, K. D. Bonin, K. Gibble, K. Lindquist, K. von Meyenn, L. Mattera, M. D. Morse, M. Kasevich, N. F. Ramsey, R. E. Miller, R. Marrus, R. N. Zare, R. W. Fox, R. W. Molof, R. Wideröe, S. K. Sekatskii, S. K. Sekatskii, T. Breeden, T. F. Gallagher, T. M. Miller, T. Seideman, T. Seideman, T. Takekoshi, T. W. Ducas, Timothy P. Dinneen, U. Valbusa, V. A. Cho, W. D. Knight, W. G. Kaenders, W. H. Wing   +62 more
core   +2 more sources

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Antiprotonic helium atomcules

EPJ Web of Conferences, 2012
About 3% of antiprotons () stopped in helium are long-lived with microsecond lifetimes, against picoseconds in all other materials. This unusual longevity has been ascribed to the trapping of on metastable bound states in He+ helium atom-molecules thus ...
Sauge Sébastien
doaj   +1 more source