Search Results - "Twesten, Ray D"

Direct Detection Electron Energy-Loss Spectroscopy: A Method to Push the Limits of Resolution and Sensitivity by Hart, James L., Lang, Andrew C., Leff, Asher C., Longo, Paolo, Trevor, Colin, Twesten, Ray D., Taheri, Mitra L.

“…In many cases, electron counting with direct detection sensors offers improved resolution, lower noise, and higher pixel density compared to conventional,…”
Get full text

Fast, Completely Reversible Li Insertion in Vanadium Pentoxide Nanoribbons by Chan, Candace K, Peng, Hailin, Twesten, Ray D, Jarausch, Konrad, Zhang, Xiao Feng, Cui, Yi

“…Layered-structure nanoribbons with efficient electron transport and short lithium ion insertion lengths are promising candidates for Li battery applications…”
Get full text

The performance evaluation of direct detection electron energy-loss spectroscopy at 200 kV and 80 kV accelerating voltages by Cheng, Shaobo, Pofelski, Alexandre, Longo, Paolo, Twesten, Ray D., Zhu, Yimei, Botton, Gianluigi A.

“…•The performance of direct electron detector (K2 IS) has been compared with the charge coupled device (CCD) detector at both 200 kV and 80 kV.•The advantages…”
Get full text

Metal Core Bonding Motifs of Monodisperse Icosahedral Au13 and Larger Au Monolayer-Protected Clusters As Revealed by X-ray Absorption Spectroscopy and Transmission Electron Microscopy by Menard, Laurent D, Xu, Huiping, Gao, Shang-Peng, Twesten, Ray D, Harper, Amanda S, Song, Yang, Wang, Gangli, Douglas, Alicia D, Yang, Judith C, Frenkel, Anatoly I, Murray, Royce W, Nuzzo, Ralph G

“…The atomic metal core structures of the subnanometer clusters Au13[PPh3]4[S(CH2)11CH3]2Cl2 (1) and Au13[PPh3]4[S(CH2)11CH3]4 (2) were characterized using…”
Get full text

Vacancy ordering and lithium insertion in III2VI3 nanowires by Peng, Hailin, Zhang, Xiao Feng, Twesten, Ray D., Cui, Yi

“…Superlattice structures resulting from vacancy ordering have been observed in many materials. Here we report vacancy ordering behavior in III 2 VI 3 nanowires…”
Get full text

Sub-Nanometer Au Monolayer-Protected Clusters Exhibiting Molecule-like Electronic Behavior:  Quantitative High-Angle Annular Dark-Field Scanning Transmission Electron Microscopy and Electrochemical Characterization of Clusters with Precise Atomic Stoichiometry by Menard, Laurent D, Gao, Shang-Peng, Xu, Huiping, Twesten, Ray D, Harper, Amanda S, Song, Yang, Wang, Gangli, Douglas, Alicia D, Yang, Judith C, Frenkel, Anatoly I, Nuzzo, Ralph G, Murray, Royce W

“…The synthesis and characterization of the clusters Au13[PPh3]4[S(CH2)11CH3]2Cl2 (1) and Au13[PPh3]4[S(CH2)11CH3]4 (2) are described. These mixed-ligand,…”
Get full text

Size analysis of nanoscale order in amorphous materials by variable-resolution fluctuation electron microscopy by Bogle, Stephanie N., Nittala, Lakshmi N., Twesten, Ray D., Voyles, Paul M., Abelson, John R.

“…Variable resolution fluctuation electron microscopy can reveal the characteristic decay length over which nanoscale order persists in amorphous materials. In…”
Get full text

Physical Evidence that Yeast Frataxin Is an Iron Storage Protein by Gakh, Oleksandr, Adamec, Jiri, Gacy, A. Marquis, Twesten, Ray D, Owen, Whyte G, Isaya, Grazia

“…Frataxin is a conserved mitochondrial protein required for iron homeostasis. We showed previously that in the presence of ferrous iron recombinant yeast…”
Get full text

Thin films: stress, strain and structure–property relations by Yeadon, Mark, Kaiyang, Zeng, Huey Hoon, Hng, Twesten, Ray D, Abothu, Robin

Get full text

Properties of combined TiN and Pt thin films applied to gas sensing by Åbom, A. Elisabeth, Hultman, Lars, Eriksson, Mats, Twesten, Ray D.

“…TiN was introduced as a part of the sensing layer of gas sensitive metal–insulator–semiconductor (MIS) devices. Three types of metallic gate layer structures…”
Get full text

Review of recent advances in spectrum imaging and its extension to reciprocal space by Maigné, Alan, Twesten, Ray D.

“…Using examples from various domains of science, this review covers some recent developments in spectrum imaging (SI) using scanning transmission electron…”
Get full text

Metal Core Bonding Motifs of Monodisperse Icosahedral Au 13 and Larger Au Monolayer-Protected Clusters As Revealed by X-ray Absorption Spectroscopy and Transmission Electron Microscopy by Menard, Laurent D., Xu, Huiping, Gao, Shang-Peng, Twesten, Ray D., Harper, Amanda S., Song, Yang, Wang, Gangli, Douglas, Alicia D., Yang, Judith C., Frenkel, Anatoly I., Murray, Royce W., Nuzzo, Ralph G.

Get full text

Vacancy ordering and lithium insertion in III sub(2)VI sub(3) nanowires by Peng, Hailin, Zhang, Xiao Feng, Twesten, Ray D, Cui, Yi

“…Superlattice structures resulting from vacancy ordering have been observed in many materials. Here we report vacancy ordering behavior in III sub(2)VI sub(3)…”
Get full text

Advances in selective wet oxidation of AlGaAs alloys by Choquette, K.D., Geib, K.M., Ashby, C.I.H., Twesten, R.D., Blum, O., Hou, H.Q., Follstaedt, D.M., Hammons, B.E., Mathes, D., Hull, R.

“…We review the chemistry, microstructure, and processing of buried oxides converted from AlGaAs layers using wet oxidation. Hydrogen is shown to have a central…”
Get full text

Fast STEM Spectrum Imaging Using Simultaneous EELS and EDS by Longo, Paolo, Twesten, Ray D

“…Up to now, researchers performing analytical investigations in the transmission electron microscope typically had to choose between analytical spectroscopy…”
Get full text

Simultaneous EELS/EDS Composition Mapping at Atomic Resolution Using Fast STEM Spectrum-Imaging by Longo, Paolo, Thomas, Paul, Aitouchen, Aziz, Schaffer, Bernhard, Twesten, Ray D.

“…With advancements in aberration-corrected electron optics, the resolution in scanning transmission electron microscopy (STEM) has been significantly improved…”
Get full text

Proceedings of the First International Conference on Materials for Advanced Technologies (ICMAT 2001), Symposium O, Suntec City, Singapore, 1-6 July, 2001 by YEADON, Mark, KAIYANG, Zeng, HOON, Hng Huey, TWESTEN, Ray D, ABOTHU, Robin

Get full text

Atomic-Level EELS Mapping Using High-Energy Edges in Dualeels™ Mode by Longo, Paolo, Thomas, Paul J., Twesten, Ray D.

“…With advancements in aberration correction, the spatial resolution of scanning transmission electron microscopy (STEM) has been enormously improved. In…”
Get full text

Atomic Elemental and Chemical Analysis of SrTiO 3 /LaMnO 3 Multilayers Using Fast Simultaneous EELS and EDS Analysis in DigitalMicrograph by Longo, Paolo, Thomas, Paul J, Aitouchen, Aziz, Rice, Phil, Topuria, Teya, Twesten, Ray D

Get full text

Atomic Elemental and Chemical Analysis of SrTiO3/LaMnO3 Multilayers Using Fast Simultaneous EELS and EDS Analysis in DigitalMicrograph by Longo, Paolo, Thomas, Paul J, Aitouchen, Aziz, Rice, Phil, Topuria, Teya, Twesten, Ray D

“…Scanning transmission electron microscopy (STEM) based techniques continue to be the gold standard for such analysis at interfaces, and aberration correction…”
Get full text