scholarly journals Vibrational and Electronic Structure of the α- and β-Naphthyl Radicals via Slow Photoelectron Velocity-Map Imaging

2015 ◽  
Vol 137 (4) ◽  
pp. 1420-1423 ◽  
Author(s):  
Marissa L. Weichman ◽  
Jongjin B. Kim ◽  
Jessalyn A. DeVine ◽  
Daniel S. Levine ◽  
Daniel M. Neumark
Keyword(s):  
Electronic Structure ◽  
Velocity Map Imaging

scholarly journals The 3s versus 3p Rydberg state photodissociation dynamics of the ethyl radical

2019 ◽  
Vol 21 (41) ◽  
pp. 23017-23025 ◽  
Author(s):  
Sonia Marggi Poullain ◽  
David V. Chicharro ◽  
Alexandre Zanchet ◽  
Luis Rubio-Lago ◽  
Alberto García-Vela ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Ab Initio ◽  
Rydberg State ◽  
Rydberg States ◽  
Electronic Structure Calculations ◽  
Velocity Map Imaging ◽  
Ethyl Radical ◽  
Structure Calculations

Photodissociation dynamics of the ethyl radical from the 3s vs. 3p Rydberg states studied by velocity map imaging and ab initio electronic structure calculations.

Electronic structure of SmO and SmO− via slow photoelectron velocity-map imaging spectroscopy and spin-orbit CASPT2 calculations

2017 ◽  
Vol 147 (23) ◽  
pp. 234311 ◽  
Author(s):  
Marissa L. Weichman ◽  
Bess Vlaisavljevich ◽  
Jessalyn A. DeVine ◽  
Nicholas S. Shuman ◽  
Shaun G. Ard ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Imaging Spectroscopy ◽  
Velocity Map Imaging ◽  
Spin Orbit ◽  
Caspt2 Calculations

scholarly journals Electronic structure of NdO via slow photoelectron velocity-map imaging spectroscopy of NdO¯

2021 ◽  
Author(s):  
Mark Babin ◽  
Martin DeWitt ◽  
Jessalyn DeVine ◽  
David McDonald II ◽  
Shuan Ard ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Imaging Spectroscopy ◽  
Velocity Map Imaging

Electronic structure of NdO via slow photoelectron velocity-map imaging spectroscopy of NdO---

2021 ◽  
Vol 155 (11) ◽  
pp. 114305
Author(s):  
Mark C. Babin ◽  
Martin DeWitt ◽  
Jessalyn A. DeVine ◽  
David C. McDonald ◽  
Shaun G. Ard ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Imaging Spectroscopy ◽  
Velocity Map Imaging

EELS Measurement of the Local Electronic Structure of Copper Atoms Segregated to Aluminum Grain Boundaries

1996 ◽  
Vol 54 ◽  
pp. 342-343
Author(s):  
S.J. Splinter ◽  
J. Bruley ◽  
P.E. Batson ◽  
D.A. Smith ◽  
R. Rosenberg
Keyword(s):  
Electronic Structure ◽  
Grain Boundaries ◽  
Boundary Segregation ◽  
Thin Layers ◽  
Nominal Composition ◽  
Spatially Resolved ◽  
Service Lifetime ◽  
Heat Treated ◽  
Probe Size ◽  
Local Electronic Structure

It has long been known that the addition of Cu to Al interconnects improves the resistance to electromigration failure. It is generally accepted that this improvement is the result of Cu segregation to Al grain boundaries. The exact mechanism by which segregated Cu increases service lifetime is not understood, although it has been suggested that the formation of thin layers of θ-CuA12 (or some metastable substoichiometric precursor, θ’ or θ”) at the boundaries may be necessary. This paper reports measurements of the local electronic structure of Cu atoms segregated to Al grain boundaries using spatially resolved EELS in a UHV STEM. It is shown that segregated Cu exists in a chemical environment similar to that of Cu atoms in bulk θ-phase precipitates.Films of 100 nm thickness and nominal composition Al-2.5wt%Cu were deposited by sputtering from alloy targets onto NaCl substrates. The samples were solution heat treated at 748K for 30 min and aged at 523K for 4 h to promote equilibrium grain boundary segregation. EELS measurements were made using a Gatan 666 PEELS spectrometer interfaced to a VG HB501 STEM operating at 100 keV. The probe size was estimated to be 1 nm FWHM. Grain boundaries with the narrowest projected width were chosen for analysis. EDX measurements of Cu segregation were made using a VG HB603 STEM.

Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

1996 ◽  
Vol 54 ◽  
pp. 160-161
Author(s):  
J. Fink
Keyword(s):  
Electronic Structure ◽  
Conducting Polymers ◽  
Conjugated Polymers ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Light Emitting ◽  
One Dimensional ◽  
New Class ◽  
Electrical Conductivities ◽  
Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

Doping effects on the geometric and electronic structure of tin clusters

2019 ◽  
Vol 21 (44) ◽  
pp. 24478-24488 ◽  
Author(s):  
Martin Gleditzsch ◽  
Marc Jäger ◽  
Lukáš F. Pašteka ◽  
Armin Shayeghi ◽  
Rolf Schäfer
Keyword(s):  
Density Functional Theory ◽  
Electronic Structure ◽  
Density Functional ◽  
Beam Deflection ◽  
Functional Theory ◽  
Doping Effects ◽  
Depth Analysis ◽  
Trajectory Simulations

In depth analysis of doping effects on the geometric and electronic structure of tin clusters via electric beam deflection, numerical trajectory simulations and density functional theory.

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

2020 ◽  
Vol 10 (18) ◽  
pp. 6266-6273
Author(s):  
Yalan Zhang ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jung Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Energy Demand ◽  
Active Sites ◽  
Electrode Materials ◽  
Global Energy ◽  
Overall Water Splitting ◽  
Local Electronic Structure ◽  
Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.

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