Results 51 to 60 of about 61,047 (214)

Probing the dopant profile in nanoscale devices by low temperature electrostatic force microscopy

AIP Advances, 2019
Probing dopant distributions in nanoscale devices may find important applications in failure analysis. In this work, we employed cryogenic electrostatic force microscopy (EFM) to probe the dopant distribution in a lateral nanoscale bipolar junction ...
Wanqing Wang, Zhao Fan, Kaixiang Chen, Hao Wei, Yaping Dan   +4 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Self‐Cleaning Sensor Surfaces for Long‐Term Environmental Monitoring

Advanced Engineering Materials, EarlyView.
Long‐term use of unattended outdoor sensors without soiling or biofouling is achieved through generation of a micro‐ and nanorough cuvette surface by combing hydrophobic nanoparticles with fluorinated polymers, crosslinked and surface‐attached through CHic chemistry. The coating demonstrates self‐cleaning behavior and prolonged outdoor stability, which
Sanam Kumari Rajak, Yasmina Frey, Ulrike Wallrabe, Oswald Prucker, Jürgen Rühe   +4 more
wiley   +1 more source

Probing nanoscale oxygen ion motion in memristive systems

Nature Communications, 2017
Ion transport in solid-state materials is a fundamental process for many modern technologies. Utilizing electrostatic force microscopy, Yanget al. directly visualize ion motion and verify the oxygen ion dynamics within HfO2—a common metal-oxide based ...
Yuchao Yang, Xiaoxian Zhang, Liang Qin, Qibin Zeng, Xiaohui Qiu, Ru Huang   +5 more
doaj   +1 more source

Ohmic-to-Schottky Modification of Zno-Metal Contact Modulated by Film Thickness [PDF]

Materials Research
This work investigated the charge transport behavior at the interface between a Pt-Ir metal contact and transparent zinc oxide (ZnO) electrodes with one, four, and eight ZnO layers.
Raquele Lima Moreira, Luis Paulo Mourão dos Santos, Francisco Carlos Carneiro Soares Salomão, Eduardo B. Barros, Igor Frota Vasconcelos   +4 more
doaj   +1 more source

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

Advanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser, Baptiste Le Roi, Omri Leshem, Joshua M. Grolman   +3 more
wiley   +1 more source

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source

Kelvin probe force microscopy in liquid using electrochemical force microscopy

Beilstein Journal of Nanotechnology, 2015
Conventional closed loop-Kelvin probe force microscopy (KPFM) has emerged as a powerful technique for probing electric and transport phenomena at the solid–gas interface.
Liam Collins, Stephen Jesse, Jason I. Kilpatrick, Alexander Tselev, M. Baris Okatan, Sergei V. Kalinin, Brian J. Rodriguez   +6 more
doaj   +1 more source