Results 41 to 50 of about 1,443 (165)

Spatiotemporal Plasma–Mediated Laser Fabrication of Ultrahigh‐Aspect‐Ratio Nanochannel Arrays for Vertical Perovskite Nanowire Semiconductor Devices

Advanced Functional Materials, EarlyView.
A spatiotemporal plasma–mediated laser processing approach is developed to fabricate ultrahigh–aspect ratio nanochannel arrays and corresponding perovskite nanowire arrays within transparent materials for optoelectronics devices. The laser‐fabricated nanochannels serve as templates for controlled perovskite infiltration and crystallization, enabling ...
Taijin Wang, Lingfeng Wang, Feng Liu, Gary J. Cheng   +3 more
wiley   +1 more source

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

Advanced Materials, EarlyView.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li, Yanran Liu, Jinjin Liu, Josephine Si Yu See, Kaijian Xing, Dong‐Chen Qi, Xiao Renshaw Wang   +6 more
wiley   +1 more source

Formation of Laser‐Induced Periodic Surface Structures on Titanium Alloy Using a Picosecond Laser: Dependence on Fluence and Number of Laser Pulses

Advanced Materials Interfaces, EarlyView.
Laser treatment of materials is a versatile technique for generating ordered surface structures. Nevertheless, such structures are the result of laser parameters such as laser pulse fluence. We demonstrate that homogeneous low special frequency laser‐induced periodic surface structures are contingent on both single and effective fluence dose and can be
Iana Fomicheva, Petr Druzhinin, Hans Amler, Alexander B. Tesler, George Sarau, Gerd Leuchs, Silke H. Christiansen   +6 more
wiley   +1 more source

Direct Observation of Propagating Gigahertz Coherent Guided Acoustic Phonons in Free Standing Single Copper Nanowires

, 2014
We report on gigahertz acoustic phonon waveguiding in free-standing single copper nanowires studied by femtosecond transient reflectivity measurements.
Amziane A., Bannov N., Belliard L., Bernard Perrin, Bienville T., Boukai A. I., Burgin J., Cardinal M. F., Chang D. E., Chree C., Cyril Jean, Feng X. L., Hirsch L. R., Huang X., Jais P. M., Juvé V., Kelf T. A., Khelfa H., Laurent Belliard, Ledbetter H., Liang H., Lin K.-H., Loïc Becerra, Maier S. A., Major T. A., Major T. A., Mante P.-A., Marco Cassinelli, Maria Eugenia Toimil-Molares, Mingo N., Molares M. T., Mounier D., Novo C., Olivier Thomas, Pochhammer L., Ristow O., Royer D., Silk M., Siry P., Staleva H., Staleva H., Staleva H., Thomas W. Cornelius, Thomsen C., van Dijk M., Vertikov A., Zijlstra P.   +46 more
core   +2 more sources

Phonon engineering with superlattices: generalized nanomechanical potentials [PDF]

, 2019
Earlier implementations to simulate coherent wave propagation in one-dimensional potentials using acoustic phonons with gigahertz-terahertz frequencies were based on coupled nanoacoustic resonators.
Esmann, M., Lanzillotti-Kimura, N. D., Ortiz, O.   +2 more
core   +2 more sources

Resistive Heating for Inducing Localized Crystal Growth in Organic Thin Film Devices

Advanced Materials Technologies, EarlyView.
Rubrene thin films are promising for organic optoelectronics due to high hole mobility. However, uncontrolled crystallization and grain boundaries from standard thermal processing hinder lateral device scalability. This work presents femtosecond‐laser micromachining and patterned resistive heating to induce localized, deterministic crystallization ...
Anna‐Lena Hofmann, Roozbeh Irandoost, Moritz Nützel, Tobias Antrack, Wooik Jang, Markas Sudzius, Hrisheekesh Thachoth Chandran, Gang Li, Johannes Benduhn, Karl Leo   +9 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Effect of picosecond strain pulses on thin layers of the ferromagnetic semiconductor (Ga,Mn)(As,P)

, 2010
The effect of picosecond acoustic strain pulses (ps-ASP) on a thin layer of (Ga,Mn)As co-doped with phosphorus was probed using magneto-optical Kerr effect (MOKE).
A. Lemaître, B. Perrin, B. Perrin, C. Gourdon, C. Testelin, E. Charron, E. Peronne, L. Thevenard, M. Cubukcu, S. Vincent   +9 more
core   +2 more sources

Photo-excited charge carriers suppress sub-terahertz phonon mode in silicon at room temperature [PDF]

, 2016
There is a growing interest in the mode-by-mode understanding of electron and phonon transport for improving energy conversion technologies, such as thermoelectrics and photovoltaics.
Chen, Gang, Liao, Bolin, Maznev, Alexei, Nelson, Keith Adam   +3 more
core   +3 more sources

Enhanced Self‐Phase Modulation in Silicon Nitride Waveguides Integrated With 2D MoS2 Films

Advanced Materials Technologies, EarlyView.
ABSTRACT On‐chip integration of 2D materials provides a promising route toward next‐generation integrated optical devices with performance beyond existing limits. Here, significantly enhanced spectral broadening induced by self‐phase modulation (SPM) is experimentally demonstrated in silicon nitride (Si3N4) waveguides integrated with 2D monolayer ...
Shahaz S. Hameed, Di Jin, Aihao Zhao, Jiayang Wu, Junkai Hu, Irfan H. Abidi, Sebastien Cueff, Christian Grillet, Yuning Zhang, Houssein El Dirani, Corrado Sciancalepore, Sebastien Kerdiles, Quentin Wilmart, Sumeet Walia, Christelle Monat, David J. Moss   +15 more
wiley   +1 more source