Results 51 to 60 of about 222,018 (214)

High Coherence Times in NV‐Doped Diamond Films for Quantum Sensing

physica status solidi (a), Volume 223, Issue 2, January 2026.
This study demonstrates the growth of micrometer‐thin diamond films with nitrogen‐vacancy centers exhibiting record‐long spin coherence times at room temperature. By combining isotopic purification, controlled nitrogen incorporation, and strain minimization, the authors achieve coherence times approaching theoretical limits, paving the way for highly ...
Rebekka Eberle, Philip Schätzle, Cheuk Kit Cheung, Andrej Denisenko, Peter Knittel   +4 more
wiley   +1 more source

Melting point of group IV and V transition metal diborides

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
The environmental conical nozzle levitator system enables cooling trace experiments above 4000 K. These cooling trace experiments were used to determine the melting points through observation of thermal arrest of group IV and V transition metal diborides (TiB2, Tm = 3313 ± 33 K; ZrB2, Tm = 3404 ± 38 K; HfB2, Tm = 3529 ± 33 K; and TaB2, Tm = 3284 ± 10 K;
Fox Thorpe, Elizabeth Sobalvarro Converse, Jesus Rivera, William Rosenberg, Scott J. McCormack   +4 more
wiley   +1 more source

Phase selection in Ln(Fe, Mn)O3: Insights from undercooling experiments, tolerance factor, and crystal field splitting

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Containerless solidification experiments reveal nucleation and liquidus temperatures for LnFeO3. The metastable hexagonal phase forms for Ln = Lu–Eu, whereas the stable orthorhombic phase dominates beyond this range. Phase selection is governed by the tolerance factor and crystal field splitting in the MeO5 units.
K. Kuribayashi, K. Shimomura, J. Takasaki, S. Shiratori, S. Ozawa   +4 more
wiley   +1 more source

Deep Learning-Based YOLO Applied to Rear Weld Pool Thermal Monitoring of Metallic Materials in the GTAW Process

Metals
This study investigates the use of YOLOv8 deep learning models to segment and classify thermal images acquired from the rear of the weld pool during the Gas Tungsten Arc Welding (GTAW) process. Thermal data were acquired using a two-color pyrometer under
Vinicius Lemes Jorge, Zaid Boutaleb, Theo Boutin, Issam Bendaoud, Fabien Soulié, Cyril Bordreuil   +5 more
doaj   +1 more source

Enhanced Light–Matter Interactions With a Single Sn Nanoantenna on Epitaxial Graphene

Advanced Optical Materials, Volume 13, Issue 36, December 19, 2025.
Surface Enhanced Raman Spectroscopy (SERS) is a leading method for surpassing the diffraction limit in analytical detection and exploring light‐matter interactions. In this study, a single plasmonic Sn nanoantenna is employed on epitaxial graphene, achieving extraordinary enhancement of graphene Raman signals.
Zamin Mamiyev, Narmina O. Balayeva, Dietrich R.T. Zahn, Christoph Tegenkamp   +3 more
wiley   +1 more source

Microstructure Control and Hot Cracking Prevention During Laser Additive Manufacturing of Cobalt-Based Superalloy

Crystals
Hot cracking is a frequent and severe defect that occurs during laser additive manufacturing of superalloys. In this work, a pulsed-wave (PW) laser modulation process was employed to control the solidification microstructure and reduce the hot cracking ...
Xuanyu Liu, Xianghui Xiao, Wenjia Xiao, Junbin Zeng, Kuanfang He, Hui Xiao   +5 more
doaj   +1 more source

Photoluminescence Properties of Type‐II GaSb/GaAs Quantum Rings

Advanced Photonics Research, Volume 6, Issue 12, December 2025.
This study examines the magneto‐optical properties of GaSb/GaAs quantum rings (QRs) using photoluminescence spectroscopy. Recombination dynamics in single‐ and ten‐layer structures are analyzed through activation energy extraction, optical absorption profiling, and observation of a strong excitation‐induced blue shift. Carrier lifetime is also increase
Shumithira Gandan, Anna Musiał, Wojciech Rudno‐Rudziński, Marek G. Mikulicz, Denise Montesdeoca, Michael Schmidt, Juan S. D. Morales, Andrew J. Marshall, Anthony Krier, Peter J. Carrington, Grzegorz Sęk   +10 more
wiley   +1 more source

MXene‐Integrated III‐Nitride Semiconductors: Recent Progress and Perspectives

Laser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.
This review paper provides a comprehensive overview of the integration of MXenes with III‐nitrides across a wide range of applications, including photodetectors, light‐emitting diodes, gas sensors, transistors, and energy‐related systems such as photoelectrochemical cells.
B. Yamunasree, Chandrakalavathi Thota, Ayush Pandey, Srinadh Choppara, Yuwaraj K. Kshetri, Soorathep Kheawhom, G. Murali, Moon‐Deock Kim, Insik In, Maddaka Reddeppa   +9 more
wiley   +1 more source

Delineation of the reaction mechanism of Ti2AlC MAX‐phase formation during spark plasma sintering synthesis

Journal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Reaction mechanism governing Ti2AlC MAX‐phase formation from elemental 2Ti:Al:C powder mixture during spark plasma synthesis was delineated through in‐depth microstructural characterizations using HTDSC, XRD, SEM–EDS–EBSD and elucidated by density functional theory (DFT)‐based ab initio calculations.
Mohammad Yunus, Bikas C. Maji
wiley   +1 more source

Refined Epitaxial Growth of YbRh2Si2 Thin Films

Advanced Materials Interfaces, Volume 12, Issue 21, November 10, 2025.
Epitaxial thin films of the heavy fermion compound YbRh2Si2 have opened new possibilities for investigating the strange metal state. This study enhances the crystallinity and surface smoothness of YbRh2Si2 thin films grown by molecular beam epitaxy.
Stefania Isceri, Duy Ha Nguyen, Andrey Prokofiev, Robert Svagera, Monika Waas, Valeria Butera, Lukas Fischer, Saeed Rasouli, Daniele Nazzari, Francesco Laudani, Michael Hanke, Miriam Giparakis, Emine Bakali, Eva Kolíbalová, Ondřej Man, Hermann Detz, Annette Foelske, Werner Schrenk, Gottfried Strasser, Silke Paschen, Aaron Maxwell Andrews   +20 more
wiley   +1 more source