Results 71 to 80 of about 48,619 (333)

Suppression of Photo‐Mediated Traps in Integrated Organic Photovoltaic–Photodetector Devices via N‐Type Self‐Assembly‐Driven Interfacial Engineering

Advanced Functional Materials, EarlyView.
Conventional unstable electron transport layers (ETLs) limit self‐powered organic sensors. This work resolves this by developing a n‐type self‐assembled monolayer (SAM), “3‐PAPh”. This SAM forms a chemically stable and structurally ordered interface that fundamentally suppresses defect formation.
Ohhyun Kwon, Jae Hoon Son, Tae Hyuk Kim, Gyeong Min Lee, Seunghyun Oh, Gayoung Ham, Min Jong Lee, Sang Heon Lee, Seon Joong Kim, Hyojung Cha, Han Young Woo, Jae Won Shim   +11 more
wiley   +1 more source

Multiple quasiparticle Hall spectroscopy investigated with a resonant detector

New Journal of Physics, 2014
We investigate the finite frequency (FF) noise properties of edge states in the quantum Hall regime. We consider the measurement scheme of a resonant detector coupled to a quantum point contact in the weak-backscattering limit. A detailed analysis of the
D Ferraro, M Carrega, A Braggio, M Sassetti   +3 more
doaj   +1 more source

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

Spatial non-adiabatic passage using geometric phases

EPJ Quantum Technology, 2017
Quantum technologies based on adiabatic techniques can be highly effective, but often at the cost of being very slow. Here we introduce a set of experimentally realistic, non-adiabatic protocols for spatial state preparation, which yield the same ...
Albert Benseny, Anthony Kiely, Yongping Zhang, Thomas Busch, Andreas Ruschhaupt   +4 more
doaj   +1 more source

REAL TIME QUANTUM TUNNELING

TASK Quarterly, 2015
The time evolution of the probability and current densities stemming from an initial state of a particle in the form of a wave packet on the left hand side of a square barrier is studied. In particular, the space distribution at a given time of the above densities is given.
openaire   +2 more sources

Magnetism and Nonlinear Charge Transport in NiFe2O4/γ‐Al2O3/SrTiO3 Heterostructure: Toward Spintronic Applications

Advanced Functional Materials, EarlyView.
In this report, we demonstrate that a crystalline phase of 52nm thick NiFe2O4 can be grown by RF sputtering on top of γ‐Al2O3(8nm)/SrTiO3 at a significantly low temperature (150 °C) without compromising the mobility and carrier density of the 2D electron gas at the γ‐Al2O3(8nm)/SrTiO3 interface.
Amit Chanda, Thor Hvid‐Olsen, Christina Hoegfeldt, Anshu Gupta, Alessandro Palliotto, Fardin Ghaffari‐Tabrizi, Maja A. Dunstan, Kasper S. Pedersen, Dae‐Sung Park, Damon J. Carrad, Thomas Sand Jespersen, Felix Trier   +11 more
wiley   +1 more source

Tunnelling Methods and Hawking's radiation: achievements and prospects

, 2011
The aim of this work is to review the tunnelling method as an alternative description of the quantum radiation from black holes and cosmological horizons.
't Hooft G, Acquaviva G Di Criscienzo R Vanzo L Zerbini S, Akbar M, Angheben M, Angheben M, Arzano M, Ashtekar A, Ashtekar A, Ashtekar A, Astefanesei D, Banerjee R, Banerjee R, Banerjee R, Belinski V A, Birrell N D, Bros J, Cai R G, Cai R G, Caldarelli M Vanzo L Zerbini S, Chen D Y Jiang Q Q Zu X T, Chen Y X Shao K N, Clifton T, Deser S, Deser S, Di Criscienzo R, Di Criscienzo R, Di Criscienzo R, Flambaum V V, Frolov V P, G Acquaviva, Gillani U A Rehman M Saifullah K, Gillani U A Saifullah K, Griffiths J B, Grumiller D, Gullstrand A, Hayward S A, Hayward S A, Hayward S A, Hayward S A Di Criscienzo R Nadalini M Vanzo L Zerbini S, Hayward S A Di Criscienzo R Nadalini M Vanzo L Zerbini S, He T M, Iguchi H, Jacobson T, Jacobson T, Jian T, Jiang K X, Kerner R, Kiefer C, Kim S P, Kraus P, L Vanzo, Landau L D, Li H L, Li H L, Li H L, Li H L, Li H L, Li R, Lin K, Lin K, Lindesay J, Lindesay J, Ma Z Z, Mann R B, Matsuno K Umetsu K, McVittie G C, Medved A J M, Miyamoto U Nemoto H Shimano M, Moretti V Pinamonti N, Mukohyama S, Nadalini M, Nakamura T K, Nariai H, Nielsen A, Nielsen A B, Nielsen A B, Nojiri S, Nolan B C, Nolan B C, Nozari K, Nozari K, Page D N, Painlevé P, Parikh M K, Parikh M K, Pizzi M, Podolsky J, R Di Criscienzo, Rabinowitz M, Rehman M, Sarkar S, Sekiwa Y, Shankaranarayanan S, Stotyn S, Szabados L B, Tolman R C, Traschen J H, Vaidya P C, Vanzo L, Vanzo L, Volovik G E, Wald R M, Wang Q, Wu S F, Wu S Q Jiang Q Q, Yale A, Yang J, Yang S Z, Zhang J Y, Zhang J Zhao Z, Zhao L, Zhu T, Åminneborg S   +112 more
core   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Quantum effect-based flexible and transparent pressure sensors with ultrahigh sensitivity and sensing density

Nature Communications, 2020
Though flexible pressure sensors with high sensitivity are attractive for health monitoring applications, existing device sensing mechanisms limit their practical applicability. Here, the authors report quantum tunnelling-based pressure sensors with high
Lan Shi, Zhuo Li, Min Chen, Yajie Qin, Yizhou Jiang, Limin Wu   +5 more
doaj   +1 more source

Probing resonating valence bond states in artificial quantum magnets

Nature Communications, 2021
The resonating valence bond state is a spin-liquid state where spins continuously alter their singlet partners. Here Yang et al. use spin-1/2 atoms precision-placed by a scanning tunnelling microscope to create artificial quantum magnets exhibiting the ...
Kai Yang, Soo-Hyon Phark, Yujeong Bae, Taner Esat, Philip Willke, Arzhang Ardavan, Andreas J. Heinrich, Christopher P. Lutz   +7 more
doaj   +1 more source