Results 1 to 10 of about 223,712 (264)

Local surface plasmon enhanced polarization and internal quantum efficiency of deep ultraviolet emissions from AlGaN-based quantum wells

Scientific Reports, 2017
We report the enhancement of the polarization and internal quantum efficiency (IQE) of deep-UV LEDs by evaporating Al nanoparticles on the device surface to induce localized surface plasmons (LSPs).
Cai Zhang, Ning Tang, Liangliang Shang, Lei Fu, Weiying Wang, Fujun Xu, Xinqiang Wang, Weikun Ge, Bo Shen   +8 more
doaj   +1 more source

Defect-induced room temperature ferromagnetism in un-doped InN film

AIP Advances, 2012
Diluted magnetic semiconductors (DMSs), with the Curie temperature at room temperature, are of technological and fundamental importance. Defect engineering has been an effective way to introduce magnetic moments in various non-magnetic systems.
Q. Y. Xie, M. Q. Gu, L. Huang, F. M. Zhang, X. S. Wu   +4 more
doaj   +1 more source

Development of a fully automated workstation for conducting routine SABRE hyperpolarization

Scientific Reports
SABRE is emerging as a fast, simple and low-cost hyperpolarization method because of its ability to regenerate enhanced NMR signals. Generally, SABRE hyperpolarization has been performed predominantly manually, leading to variations in reproducibility ...
Jing Yang, Ruodong Xin, Sören Lehmkuhl, Jan G. Korvink, Jürgen J. Brandner   +4 more
doaj   +1 more source

Portable dielectrophoresis for biology: ADEPT facilitates cell trapping, separation, and interactions

Microsystems & Nanoengineering
Dielectrophoresis is a powerful and well-established technique that allows label-free, non-invasive manipulation of cells and particles by leveraging their electrical properties.
Lourdes Albina Nirupa Julius, Dora Akgül, Gowri Krishnan, Fabian Falk, Jan Korvink, Vlad Badilita   +5 more
doaj   +1 more source

Exchange coupling torque in ferrimagnetic Co/Gd bilayer maximized near angular momentum compensation temperature

Nature Communications, 2018
High speed current induced domain wall motion is key to various spintronic applications, such as memory-storage. Here the authors show that the motion of chiral domain walls in Co/Gd bilayer structures is controlled by an exchange coupling torque that is
Robin Bläsing, Tianping Ma, See-Hun Yang, Chirag Garg, Fasil Kidane Dejene, Alpha T N’Diaye, Gong Chen, Kai Liu, Stuart S. P. Parkin   +8 more
doaj   +1 more source

Implantable silicon neural probes with nanophotonic phased arrays for single-lobe beam steering

Communications Engineering
In brain activity mapping with optogenetics, patterned illumination is crucial for targeted neural stimulation. However, due to optical scattering in brain tissue, light-emitting implants are needed to bring patterned illumination to deep brain regions ...
Fu-Der Chen, Ankita Sharma, Tianyuan Xue, Youngho Jung, Alperen Govdeli, Jason C. C. Mak, Homeira Moradi Chameh, Mandana Movahed, Michael G. K. Brunk, Xianshu Luo, Hongyao Chua, Patrick Guo-Qiang Lo, Taufik A. Valiante, Wesley D. Sacher, Joyce K. S. Poon   +14 more
doaj   +1 more source

Analysis of fault detection and defect categorization in photovoltaic inverters for enhanced reliability and efficiency in large-scale solar energy systems

EPJ Photovoltaics
This study presents a systematic approach for examining the performance and vulnerability of large-scale, grid-connected PV systems in relation to inverter faults − particularly those linked to insulated-gate bipolar transistor (IGBT) component.
Malik Stephanie, Daßler David, Patel Dharm, Klute Carola, Klengel Robert, Dietrich Andreas, Kaufmann Kai, Hennig Carsten, Wehnert Danny, Ebert Matthias   +9 more
doaj   +1 more source

Excellent Magnetocaloric Properties near 285 K of Amorphous Fe₈₈Pr₆Ce₄B₂ Ribbon

Metals
A novel amorphous Fe88Pr6Ce4B2 ribbon with better magnetocaloric properties near 285 K is reported in the present work. The Fe88Pr6Ce4B2 ribbon exhibits a typical second-order ferromagnetic–paramagnetic transition near its Curie temperature (Tc, ~284 K),
Xiangjie Liu, Jiameng Yuan, Qiang Wang, Ding Ding, Lei Xia   +4 more
doaj   +1 more source

Frequency multiplexing enables parallel multi-sample EPR

Scientific Reports
Electron paramagnetic resonance (EPR) spectroscopy stands out as a powerful analytical technique with extensive applications in the fields of biology, chemistry, physics, and material sciences.
Chun Him Lee, Jan G. Korvink, Mazin Jouda   +2 more
doaj   +1 more source

Nanostructuring of Titanium by Anodic Oxidation with Sulfuric and Hydrofluoric Acid

Current Directions in Biomedical Engineering, 2018
Within this work we demonstrate different Anodic Oxidation processes to achieve a broad variety of nanostructures on titanium and the titanium alloy Ti6Al4V for the use as medical implant surfaces.
Doll P. W., Wolf M., Weichert M., Ahrens R., Guber A. E., Spindler B.   +5 more
doaj   +1 more source