Results 51 to 60 of about 1,945,862 (288)

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

Advanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam, Jihyun Kim, Soobeen Ji, In Soo Kim, Sejin Kim, Eungseon Yeon, Do Kyung Hwang, Iva Plutnarová, Zdeněk Sofer, Sang Min Won, Joohoon Kang   +10 more
wiley   +1 more source

Waveform-sequencing for scanning tunneling microscopy based pump-probe spectroscopy and pulsed-ESR

MethodsX, 2019
We present here the straightforward implementation of pump-probe methods into existing scanning tunneling microscopy (STM) systems. Our method uses the waveform-sequencing abilities of a standard arbitrary waveform generator (AWG) and a simple mechanical
Fabian Donat Natterer
doaj   +1 more source

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

Advanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang, Mu‐Pai Lee, Jhen‐Dong Tsai, Liang‐Ying Hsieh, Jui‐Yuan Chen, Chun‐Wei Huang, Yen‐Fu Lin, Wen‐Wei Wu   +7 more
wiley   +1 more source

Spin-polarized scanning tunneling microscopy with quantitative insights into magnetic probes

Nano Convergence, 2017
Spin-polarized scanning tunneling microscopy and spectroscopy (spin-STM/S) have been successfully applied to magnetic characterizations of individual nanostructures. Spin-STM/S is often performed in magnetic fields of up to some Tesla, which may strongly
Soo-hyon Phark, Dirk Sander
doaj   +1 more source

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

Scanning tunneling microscopy.

Bulletin of the Japan Institute of Metals, 1986
The scanning tunneling microscope (STM)-developed by Binnig and Rohrer-has recently appeared as a new instrument for surface structure investigations with atomic resolution. This chapter is intended to give a general overview of the current status of the STM and to illustrate its potential and performance with typical examples, supplemented by an ...
Sakurai, Toshio, Kobayashi, Akiko, Sakai, Akira   +2 more
openaire   +4 more sources

Imaging electronic states on topological semimetals using scanning tunneling microscopy

New Journal of Physics, 2016
Following the intense studies on topological insulators, significant efforts have recently been devoted to the search for gapless topological systems. These materials not only broaden the topological classification of matter but also provide a condensed ...
András Gyenis, Hiroyuki Inoue, Sangjun Jeon, Brian B Zhou, Benjamin E Feldman, Zhijun Wang, Jian Li, Shan Jiang, Quinn D Gibson, Satya K Kushwaha, Jason W Krizan, Ni Ni, Robert J Cava, B Andrei Bernevig, Ali Yazdani   +14 more
doaj   +1 more source

Adsorption of enantiomeric and racemic tyrosine on Cu(111): A scanning tunneling microscopy study

, 2003
The adsorption of enantiomers and a racemic mixture of tyrosine (tyr) on Cu(111) has been investigated by cyclic voltammetry and electrochemical scanning tunneling microscopy. D-tyr and L-tyr molecules adsorb on Cu(111) and show a (4 x 4) structure.
Xu QM, Wan LJ, 靳刚, Wang D, Bai CL, Wan, LJ (reprint author), Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China.   +5 more
core   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

Advanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee, Junho Min, Yonas Tsegaye Megra, Min‐Hye Jeong, Hwi Je Woo, Jaewon Han, Junheon Ha, Gyunghyun Jang, Young Jae Song, Hyun‐Soo Ra, Hoon Hahn Yoon, Jong‐Soo Lee   +11 more
wiley   +1 more source

Towards Laterally Resolved Ferromagnetic Resonance with Spin-Polarized Scanning Tunneling Microscopy

Nanomaterials, 2019
We used a homodyne detection to investigate the gyration of magnetic vortex cores in Fe islands on W(110) with spin-polarized scanning tunneling microscopy at liquid helium temperatures.
Marie Hervé, Moritz Peter, Timofey Balashov, Wulf Wulfhekel   +3 more
doaj   +1 more source