Results 61 to 70 of about 622,021 (356)
Controlling photocurrent channels in scanning tunneling microscopy
New Journal of Physics, 2020 We investigate photocurrents driven by femtosecond laser excitation of a (sub)-nanometer tunnel junction in an ultrahigh vacuum low-temperature scanning tunneling microscope (STM). The optically driven charge transfer is revealed by tip retraction curves
Benjamin Schröder +7 more
doaj +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Thermal Sight: A Position‐Sensitive Detector for a Pinpoint Heat Spot
Small SciencePrecise positioning is a never‐ending goal in both fundamental science and technology. Recent decades of advancements in high‐precision position detection have predominantly relied on photoelectric effects for light detection in semiconductors. Herein, a
Jun Peng +6 more
doaj +1 more source
Hollow plasmonic antennas for broadband SERS spectroscopy
Beilstein Journal of Nanotechnology, 2015 The chemical environment of cells is an extremely complex and multifaceted system that includes many types of proteins, lipids, nucleic acids and various other components.
Gabriele C. Messina +6 more
doaj +1 more source
Organic Light-Emitting Diodes with Electrospun Electrodes for Double-Side Emissions
Micromachines, 2023 Transparent conductive electrodes (TCE) obtained by the electrospinning method and gold covered were used as cathodes in the organic light-emitting diodes (OLEDs) to create double side-emission. The electro-active nanofibers of poly(methyl methacrylate) (
Iulia Corina Ciobotaru +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley +1 more source
Growth and Characterisation of ZnO Nanostructures: Excitonic Properties and Morphology [PDF]
, 2010 The growth mechanism of aligned ZnO nanostructures, grown by the vapour phase transport (VPT) growth method, specifically with nanorod and nanowall morphologies has been studied.
Biswas, Mahua
core +2 more sources
Temperature-Enhanced Exciton Emission from GaAs Cone–Shell Quantum Dots
Nanomaterials, 2023 The temperature-dependent intensities of the exciton (X) and biexciton (XX) peaks from single GaAs cone–shell quantum dots (QDs) are studied with micro photoluminescence (PL) at varied excitation power and QD size.
Christian Heyn +4 more
doaj +1 more source
DNA-based self-assembly of chiral plasmonic nanostructures with tailored optical response [PDF]
Nature, 2011 Matter structured on a length scale comparable to or smaller than the wavelength of light can exhibit unusual optical properties. Particularly promising components for such materials are metal nanostructures, where structural alterations provide a ...
A. Kuzyk +8 more
semanticscholar +1 more source
Polysaccharide Nanostructures [PDF]
, 2014 This chapter reviews the microstructural evolution of single polysaccharide gels, mixed protein–polysaccharide systems and fluid gels. It also covers the physicochemical behaviour of the crystalline and glassy solid states of polysaccharide systems. The chapter outlines the structural monomers of the polysaccharide backbone and goes on to describe how ...
openaire +2 more sources