Results 61 to 70 of about 77,481 (274)

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

open access: yesAdvanced 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   +10 more
wiley   +1 more source

Terthiophene on Au(111): A scanning tunneling microscopy and spectroscopy study

open access: yesBeilstein Journal of Nanotechnology, 2011
Terthiophene (3T) molecules adsorbed on herringbone (HB) reconstructed Au(111) surfaces in the low coverage regime were investigated by means of low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) under ultra-high vacuum conditions.
Berndt Koslowski   +5 more
doaj   +1 more source

Submicron Deformation Field Measurements II: Improved Digital Image Correlation [PDF]

open access: yes, 1994
This is the second paper in a series of three devoted to the applicaiton of Scanning Tunneling Microscopy to mechanics problems. In this paper improvements to the Digital Image Correlation method are outlined, a technique that compares digital images of ...
Knauss, W. G., Vendroux, G.
core  

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

open access: yesAdvanced 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   +19 more
wiley   +1 more source

Nanofabricated tips for device-based scanning tunneling microscopy

open access: yes, 2019
We report on the fabrication and performance of a new kind of tip for scanning tunneling microscopy. By fully incorporating a metallic tip on a silicon chip using modern micromachining and nanofabrication techniques, we realize so-called smart tips and ...
Allan, Milan P.   +7 more
core   +1 more source

Direct observation of localized defect states in semiconductor nanotube junctions [PDF]

open access: yes, 2014
Scanning tunneling microscopy of semiconductor-semiconductor carbon nanotube junctions with different band gaps was studied. Characteristic features of the wave functions at different energy levels were exhibited in the atomically resolved scanning ...
C. Dekker   +10 more
core   +1 more source

Scanning Tunneling Microscopy

open access: yesHyomen Kagaku, 1984
A new technique developed by Binning, Rohrer, Gerber and Weibel on scanning tunneling micro scopy (STM) is presented. STM gives surface topographies in real space and work function profiles on an atomic scale. The spatial resolution of STM is sub-A in depth and several A in lateral direction.
openaire   +2 more sources

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

open access: yesAdvanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu   +8 more
wiley   +1 more source

Apparent tunneling barrier height and local work function of atomic arrays

open access: yesBeilstein Journal of Nanotechnology, 2018
Spatially resolved measurements of the apparent tunneling barrier height Φapp in scanning tunneling microscopy have been used to estimate variations of the local work function Φ of surface structures.
Neda Noei   +2 more
doaj   +1 more source

Twins and their boundaries during homoepitaxy on Ir(111)

open access: yes, 2010
The growth and annealing behavior of strongly twinned homoepitaxial films on Ir(111) has been investigated by scanning tunneling microscopy, low energy electron diffraction and surface X-ray diffraction. In situ surface X-ray diffraction during and after
Bleikamp, Sebastian   +4 more
core   +3 more sources

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