Results 51 to 60 of about 228,344 (317)

Controlling photocurrent channels in scanning tunneling microscopy

open access: yesNew 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

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Plasmonic nanostructures and film crystallization in perovskite solar cells

open access: yes, 2014
The aim of this thesis is to develop a deeper understanding and the technology in the nascent field of solid-state organic-inorganic perovskite solar cells.
Saliba, Michael
core   +1 more source

Rolled up si-based three dimensional micro-/nanostructures for MEMS/NEMS [PDF]

open access: yes, 2008
Recently, by combination of the “top down” and “bottom up” approaches, a new strategy to fabricate 3D micro-/nanostructures named self-scrolling technique has been introduced by Prinz et al. in 1999.
Zhang, Li
core   +1 more source

Organic Light-Emitting Diodes with Electrospun Electrodes for Double-Side Emissions

open access: yesMicromachines, 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

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Self-Assembled Liquid Crystal Nanostructures [PDF]

open access: yes, 2012
Self-assembly of liquid crystalline molecules has been a highly interesting research area over the past few decades. The modification of traditional rod-like liquid crystalline molecules by adding additional functional groups is an effective way to ...
Mang, Xiaobin, Mang, Xiaobin/XM
core  

Cellulose Structures as a Support or Template for Inorganic Nanostructures and Their Assemblies

open access: yes, 2022
Cellulose is the most abundant natural polymer and deserves the special attention of the scientific community because it represents a sustainable source of carbon and plays an important role as a sustainable energent for replacing crude oil, coal, and ...
Žagar, Ema   +3 more
core   +1 more source

Thermal Sight: A Position‐Sensitive Detector for a Pinpoint Heat Spot

open access: yesSmall Science
Precise 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

open access: yesBeilstein 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

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