Reversible modification of ultra-broadband luminescence in transparent photonic materials through field-induced nanoscale structural transformation

Nanoscale ◽  
2020 ◽  
Vol 12 (43) ◽  
pp. 22002-22008
Author(s):  
Er Pan ◽  
Gongxun Bai ◽  
Muzhi Cai ◽  
Youjie Hua ◽  
Liang Chen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Structural Transformation ◽  
Short Range ◽  
Photonic Materials ◽  
Broadband Emission ◽  
Reversible Modification

Ultra-broadband emission of transition metal Ni2+-doped transparent ferroelectrics is accurately and reversibly modified by field-induced short-range structural transformation.

Chemical Short Range Order in Transition Metal Glasses*

1988 ◽  
Vol 157 (Part_1) ◽  
pp. 53-57 ◽  
Author(s):  
Alain Pasturel ◽  
Jürgen Hafner ◽  
Didier Mayou
Keyword(s):  
Transition Metal ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Metal Glasses

Electronic Structure, Multiatom Interactions, Stability of Ordered Structures and Short Range Order in Binary Transition Metal Alloys

1982 ◽  
Vol 21 ◽  
Author(s):  
A. Bieber ◽  
F. GAUTIER
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
Short Range ◽  
Short Range Order ◽  
Range Order ◽  
Metal Alloys ◽  
Ordered Structures ◽  
Transition Metal Alloys ◽  
The Stability ◽  
Pair Interactions

ABSTRACTMlultiatom interactions required in the statistical models used for the study of both the stability of ordered structures in the ground state and the chemical short range order, have been computed from the electronic structure for transition metal alloys. It is shown that : i) the most important interactions coming from “d” bands are those corresponding to self-retraced paths, the contributions of compact clusters being negligible ; ii) in general the results obtained using only second order pair interactions are valid provided that the concentration dependence of the pair interactions is taken into account. However in a few peculiar cases these results may be qualitatively modified.

Electrochemical Reactions, Chemical Ordering Effects, and Calculated Electronic Structure, for Pt100-xMx (M = V, Zr) Thin-Film Surfaces in Acid Electrolytes

MRS Advances ◽  
2017 ◽  
Vol 2 (8) ◽  
pp. 459-464
Author(s):  
Charles C. Hays ◽  
Uichiro Mizutani
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
Fermi Energy ◽  
Short Range ◽  
Electrode Materials ◽  
Polymer Electrolyte Membrane ◽  
Energy Shift ◽  
Electronic Structure Calculations ◽  
Reduction Reaction ◽  
Structure Calculations

ABSTRACTMicrostructural, chemical, and electrochemical property measurements results, for (111) crystallographically oriented Pt100-xMx (M = V, Zr; 3 < xv < 14; and 4 < xZr < 35, At.%) sputtered thin films are presented, with electronic structure calculations. These Pt-based alloys were prepared to investigate early transition metal (ETM), late-transition-metal (LTM) alloys as potential electrode materials in hydrogen-air polymer-electrolyte-membrane fuel cells (PEMFCs). The Pt100-xMx oxygen-reduction-reaction (ORR) currents peak for 8 < x < 10 atomic percent, so local chemical-short-range-order, may exist; as the peak in ORR activity is commensurate with the strong ordering in Pt8M (M = Ti, V, Zr). The hydrogen under potential deposition (Hupd) at Pt active area, and ORR reaction kinetics, on the alloyed surfaces are composition dependent, suggesting three possible effects: 1) charge transfer from V-(3d)3 [or Zr- (4d)2] states, to the hole in the top of the Pt-(5d)9 band alters the electronic structure at the Fermi energy; 2) alloying Pt with the ETM elements introduces a bi-functional character to the electrode surface, and 3) or the presence of short range chemical order induces a Fermi energy shift. To confirm the 1st and 3rd hypotheses, the electronic structure of Pt8Ti, Pt8V, and Pt8Zr, were calculated using the WIEN2k program package. The electronic structure calculations for ordered Pt8M give strong confirmation of the hypotheses, as they reveal that the Pt8M Fermi energy lies within the Pt-5d anti-bonding band, and also falls into a pseudogap in between the Md bonding and anti-bonding bands. In addition, the Pt8M DOS calculations confirm the presence of a deep pseudogap formed across the Fermi energy for both the Pt-sp and M-sp electrons. These experimental and theoretical results motivate additional studies of the novel Pt8M phases.

Transition metal ion FRET to measure short-range distances at the intracellular surface of the plasma membrane

2016 ◽  
Vol 212 (4) ◽  
pp. 2124OIA26
Author(s):  
Sharona E. Gordon ◽  
Eric N. Senning ◽  
Teresa K. Aman ◽  
William N. Zagotta
Keyword(s):  
Plasma Membrane ◽  
Transition Metal ◽  
Metal Ion ◽  
Short Range ◽  
Transition Metal Ion
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