Results 51 to 60 of about 167,152 (283)

Nonequilibrium Bond Forces in Single-Molecule Junctions [PDF]

Nano Letters, 2019
Passing a current across two touching C60 molecules imposes a nonequilibrium population of bonding and antibonding molecular orbitals, which changes the equilibrium bond character and strength. A current-induced bond force therefore contributes to the total force at chemical-bond distances. The combination of first-principles calculations with scanning
Jonathan Brand, Susanne Leitherer, Nick R. Papior, Nicolas Néel, Yong Lei, Mads Brandbyge, Jörg Kröger   +6 more
openaire   +3 more sources

Control of Unipolar/Ambipolar Transport in Single‐Molecule Transistors through Interface Engineering

Advanced Electronic Materials, 2020
To realize single‐molecule field‐effect transistors, a crucial test for evaluating the integrity of single‐molecule electronics into conventional circuit architectures, remains elusive.
Na Xin, Xianghua Kong, Yu‐Peng Zhang, Chuancheng Jia, Lei Liu, Yao Gong, Weining Zhang, Shuopei Wang, Guangyu Zhang, Hao‐Li Zhang, Hong Guo, Xuefeng Guo   +11 more
doaj   +1 more source

Mechanically Tuned Thermopower of Single‐Molecule Junctions

Advanced Electronic Materials, 2022
AbstractIn this paper, the tuning of the thermopower with single‐molecule junctions of fullerene (C60), 4,4′‐bipyridine (BPY), and p‐phenylenediamine (PPD) using scanning tunneling microscopy (STM)‐based break junction technique is demonstrated. Single‐molecule junctions are prepared in a nanogap between a Au‐STM tip and a Au(111) electrode.
Shintaro Fujii, Enrique Montes, Haruna Cho, Yi Yue, Masaaki Koike, Tomoaki Nishino, Héctor Vázquez, Manabu Kiguchi   +7 more
openaire   +2 more sources

Constructive Quantum Interference in Single‐Molecule Benzodichalcogenophene Junctions [PDF]

Chemistry – A European Journal, 2020
AbstractHeteroatom substitution into the cores of alternant, aromatic hydrocarbons containing only even‐membered rings is attracting increasing interest as a method of tuning their electrical conductance. Here, the effect of heteroatom substitution into molecular cores of non‐alternant hydrocarbons, containing odd‐membered rings, is examined ...
Masoud Baghernejad, Yang Yang, Oday A. Al‐Owaedi, Yves Aeschi, Biao‐Feng Zeng, Zahra Murtada Abd Dawood, Xiaohui Li, Junyang Liu, Jia Shi, Silvio Decurtins, Shi‐Xia Liu, Wenjing Hong, Colin J. Lambert   +12 more
openaire   +4 more sources

Plasmonic tunnel junctions for single-molecule redox chemistry

Nature Communications, 2017
Plasmons in sub-nm cavities can enable chemical processes within plasmonic hotspots. Here the authors use surface-enhanced Raman spectroscopy to track hot-electron-induced chemical reduction processes in aromatic molecules, thus enabling observation of ...
Bart de Nijs, Felix Benz, Steven J. Barrow, Daniel O. Sigle, Rohit Chikkaraddy, Aniello Palma, Cloudy Carnegie, Marlous Kamp, Ravishankar Sundararaman, Prineha Narang, Oren A. Scherman, Jeremy J. Baumberg   +11 more
doaj   +1 more source

Experimental Evidence for Quantum Interference and Vibrationally Induced Decoherence in Single-Molecule Junctions [PDF]

, 2012
We analyze quantum interference and decoherence effects in single-molecule junctions both experimentally and theoretically by means of the mechanically controlled break junction technique and density-functional theory.
Heiko B. Weber, J. C. Cuevas, Marcel Mayor, Mark Elbing, Martin R. Bryce, Michael Thoss, Pedro B. Coto, Rainer Härtle, Stefan Ballmann   +8 more
core   +2 more sources

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele, Calogero Virgone, Michaela Kuhlen, Sabine Irtan, Yves Reguerre, Malgorzata Krawczyk, Ewa Bien, Tal Ben‐Ami, Maja Cesen, Ricardo Lopez‐Almaraz, Andrea Ferrari, Gianni Bisogno, Dominik T. Schneider, Abbas Agaimy, Constantin Lapa, Hubert Ducou le Pointe, Rainer Claus, Catherine Daniel, Ines B. Brecht, Daniel Orbach   +19 more
wiley   +1 more source

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa, Daisuke Honda, Seigo Akari, Tadao Akizawa   +3 more
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Tuning the thermal conductance of molecular junctions with interference effects

, 2017
We present an \emph{ab initio} study of the role of interference effects in the thermal conductance of single-molecule junctions. To be precise, using a first-principles transport method based on density functional theory, we analyze the coherent phonon ...
Cuevas, J. C., Klöckner, J. C., Pauly, F.   +2 more
core   +1 more source