Results 81 to 90 of about 92,485 (293)
Thermoreflectance Detection of Point Defects Resulting from Focused Ion Beam Milling
Advanced Engineering Materials, EarlyView.Focused ion beam (FIB) milling is a common tool for nanoscale material processing, however irradiation damage, redeposition, and contamination can occur. We use several characterization tools to show FIB‐induced effects beyond 1 mm from the milled area.
Thomas W. Pfeifer +3 more
wiley +1 more source
Experimental Characterization of Millimeter-Wave Indoor Propagation Channels at 28 GHz
IEEE Access, 2018 The increasing requirement for the mobile data traffic accelerates the research of millimeterwave (mm-wave) for future wireless systems. Accurate characterization of the mm-wave propagation channel is fundamental and essential for the system design and ...
Guojin Zhang +6 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the NFDI‐MatWerk Ontology (MWO), a Basic Formal Ontology‐based framework for interoperable research data management in materials science and engineering (MSE). Covering consortium structures, research data management resources, services, and instruments, MWO enables semantic integration, Findable, Accessible, Interoperable, and ...
Hossein Beygi Nasrabadi +4 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek +5 more
wiley +1 more source
Channel Characterization for 700 MHz DSRC Vehicular Communication
Journal of Electrical and Computer Engineering, 2010 Adapting OFDM for vehicular communication requires extensive knowledge of anticipated multipath and Doppler environments. We present a GPS-enabled channel sounding system built and used to conduct a channel measurement campaign.
Raffi Sevlian +4 more
doaj +1 more source
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
Channel Measurements at 300 GHz for Low Terahertz Links in a Data Center
IEEE Open Journal of Antennas and PropagationThis article presents comprehensive double-directional channel measurements with time-domain channel sounding at 300 GHz that characterize the channel of wireless links in a data center. The channels are classified into three scenario-dependent use cases
Johannes M. Eckhardt +2 more
doaj +1 more source
Real-Time MIMO Channel Sounder for Emulation of Distributed Ultrawideband Systems
International Journal of Antennas and Propagation, 2014 This paper introduces an ultrawideband (UWB) channel sounding system. Its novel architecture allows real-time measurements of multiple time-variant radio propagation channels in different ultrawide frequency bands.
Rudolf Zetik +3 more
doaj +1 more source
Sound Channel in the Ionosphere
Journal of geomagnetism and geoelectricity, 1961 The distribution of the sound velocity is obtained by the distribution of the absolute temperature and wind. When the direction of the sound is toward west at the middle latitude, the minimum velocities in summer and winter are estimated to be 210m/s at 70km in height and 280m/s at an altitude of about 90km respectively.
openaire +2 more sources