Results 81 to 90 of about 30,144 (262)

Highly Crystalline CsPbBr3 Thin Films With Amplified Spontaneous Emission via High‐Pressure Recrystallization

Advanced Optical Materials, EarlyView.
High‐pressure recrystallization provides a reproducible route to high‐quality CsPbBr3${\rm CsPbBr}_{3}$ thin films. Optimized processing at 300 bar yields smooth, pinhole‐free, single‐phase 3D perovskite layers with tunable thickness, enhanced crystallinity, reduced amplified‐spontaneous‐emission threshold, improved photostability, and phase‐transition
Asma Miled, Trong Tam Nguyen, Thi Anh Vui Nguyen, José Penuelas, Aziz Benamrouche, Céline Chevalier, Thi Kim Anh Hoang, Gaëlle Trippé‐Allard, Elsa Cassette, Brice Devif, Emmanuel Drouard, Emmanuelle Deleporte, Hanh Hong Mai, Abdelaziz Bouazizi, Christian Seassal, Hai Son Nguyen   +15 more
wiley   +1 more source

In-situ ultrasonic shear wave sensing of thin metallic coatings on journal bearing shells

Friction
Ultrasonic testing using shear polarised waves is widely applied in medical and engineering fields, commonly employed for hardness or stress measurement.
Liqun Wu, Ion Palamarciuc, Rizwan Sarwar Bajwa, Yi Zhang, Rob S. Dwyer-Joyce   +4 more
doaj   +1 more source

Photodoping in Wide‐Bandgap Perovskite Solar Cells With MXenes

Advanced Optical Materials, EarlyView.
Ultrafast tandem spectroscopy and DFT modeling reveal the separate dynamics and the imbalance of electrons and holes in wide bandgap perovskite solar cells with MXene incorporation. The enhanced photoconversion performances of the devices are traced to photodoping, with selective hole trapping and suppressed recombination of electrons.
Angelica Simbula, Antonio Agresti, Sara Pescetelli, Sofia Sechi, Nicola Sestu, Francesco Mattana, Federico Pitzalis, Riccardo Pau, David Dell'Angelo, Alessio Filippetti, Alessandro Mattoni, Anna Pazniak, Daniela Marongiu, Valeria Demontis, Francesco Quochi, Michele Saba, Andrea Mura, Giovanni Bongiovanni   +17 more
wiley   +1 more source

Evaluation of Repellency and Lethal Effects of Ultrasonic Waves on the Blattella germanica (Blattodea: Blattellidae). [PDF]

J Arthropod Borne Dis, 2023
Khan-Ahmadi A, Vatandoost H, Akhavan AA, Baniardalani M, Khalifeh-Soltani K, Azarm A, Zahraei-Ramazani A.   +6 more
europepmc   +1 more source

Cascading Spin‐Orbitronic Terahertz Emission in Ferromagnet/Nonmagnet Bilayers

Advanced Optical Materials, EarlyView.
While the initial generation mechanism of picosecond orbital currents remains elusive, we reveal a cascading spin–orbital transport mechanism that induces optically driven terahertz emission in ferromagnet/nonmagnet heterostructures. Using a ferromagnet with strong spin–orbit coupling, we identify a thickness‐driven transition from spin‐dominated to ...
Younghun Kim, Pinki Yadav, Byungwoo Son, Jooyoung Heo, Sejin Shin, Do‐Kyeong Ko, Rahul Mishra, Kyusup Lee   +7 more
wiley   +1 more source

Experimental Investigation of Bulk Elastic Wave Propagation in the Volume of Metamaterials

Acoustics
This paper presents the results of experimental studies on the propagation of longitudinal and transverse ultrasonic waves through a metamaterial—a composite material based on polymer matrix with periodically arranged cylindrical elements.
Aleksandr Korobov, Natalia Shirgina, Aleksey Kokshaiskii, Natalia Odina, Aleksandr Volodarskii   +4 more
doaj   +1 more source

Sustained modulation of primate deep brain circuits with focused ultrasonic waves. [PDF]

Brain Stimul, 2023
Webb TD, Wilson MG, Odéen H, Kubanek J.
europepmc   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

A Visualization of Ultrasonic Beam from a Medical Transducer using a Combination of Background-Oriented Schlieren Imaging with Hilbert Transformation

JIF (Jurnal Ilmu Fisika)
Ultrasonics in the medical field require a safe treatment for patients. The uncontrolled intensities of the ultrasonic waves cause ineffective treatment. So far, the hydrophone probe provides a standard for ultrasonic visualization. However, this method
Margi Sasono, Apik Rusdiarna IP
doaj   +1 more source

Characterisation of thermally treated beech and birch by means of quasi-static tests and ultrasonic waves. [PDF]

Sci Rep, 2023
Al-Musawi H, Manni E, Stadlmann A, Ungerer B, Hassan Vand M, Lahayne O, Nobile R, Baumann G, Feist F, Müller U.   +9 more
europepmc   +1 more source