Results 71 to 80 of about 411,959 (304)

Terahertz driven amplification of coherent optical phonons in GaAs coupled to metallic dog-bone resonators [PDF]

EPJ Web of Conferences, 2019
Two-dimensional terahertz spectroscopy on an AlAs/GaAs nanostructure covered by field-enhancing dog-bone resonators shows signatures of coherent optical phonon amplification.
Woerner Michael, Somma Carmine, Reimann Klaus, Elsaesser Thomas, Brener Igal, Reno John L., Yang Yuanmu, Liu Peter Q.   +7 more
doaj   +1 more source

Surface acoustic wave modulation of single photon emission from GaN/InGaN nanowire quantum dots [PDF]

, 2018
On-chip quantum information processing requires controllable quantum light sources that can be operated on-demand at high-speeds and with the possibility of in-situ control of the photon emission wavelength and its optical polarization properties.
Chernysheva, E., Hernández-Mínguez, A., Lazic, S., Santos, P. V., van der Meulen, H. P.   +4 more
core   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Spatial confinement of laser-induced plasma by laser-induced and obstacle-reflected shock wave and its effect on optical emission of laser-induced plasma

AIP Advances, 2019
The laser-induced plasma (LIP) and the shock wave generated by pulsed laser ablation of a graphite target in air and reflected by a flat obstacle were examined by optical emission spectroscopy and probe beam deflection measurements.
Yining Qiu, Chujun Yao, Chengbao Yao, Jie Gan, Wu Zhang, Ning Xu, Jian Sun, Jiada Wu   +7 more
doaj   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

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, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Comprehensive characterization of nitrogen-related defect states in β-Ga2O3 using quantitative optical and thermal defect spectroscopy methods

APL Materials
This study provides a comprehensive analysis of the dominant deep acceptor level in nitrogen-doped beta-phase gallium oxide (β-Ga2O3), elucidating and reconciling the hole emission features observed in deep-level optical spectroscopy (DLOS).
Hemant Ghadi, Evan Cornuelle, Joe F. Mcglone, Alexander Senckowski, Shivam Sharma, Man Hoi Wong, Uttam Singisetti, Steven A. Ringel   +7 more
doaj   +1 more source

Infrared Observations of The Millisecond Pulsar Binary J1023+0038: Evidence for Short-Term Nature of Its Interacting Phase in 2000--2001 [PDF]

, 2013
We report our multi-band infrared (IR) imaging of the transitional millisecond pulsar system J1023+0038, a rare pulsar binary known to have an accretion disk in 2000--2001.
Morrell, Nidia, Wang, Xuebing, Wang, Zhongxiang   +2 more
core   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Analysis of Aloe Vera Plasma Parameters Using Optical Emission Spectroscopy

Iraqi Journal of Physics
Optical emission spectroscopy (OES) is used to analyze the main properties of aloe vera plasma, where the plasma is generated using a plasma jet. Several parameters of the plasma are measured, including electron temperature (Te), electron density (ne ...
Weam Aqeel Kazim, Alyaa Hussein Ali
doaj   +1 more source

Capacitively coupled radio frequency nitrogen plasma generated at two different exciting frequencies of 13.56 MHz and 40 MHz analyzed using Langmuir probe along with optical emission spectroscopy

AIP Advances, 2019
Capacitively coupled nitrogen plasma discharges driven by two different exciting radio frequencies of 13.56 MHz, and 40 MHz are investigated. Langmuir probe diagnostics along with optical emission spectroscopy are used for interpreting the discharges ...
Dogan Mansuroglu
doaj   +1 more source