Results 101 to 110 of about 62,100 (308)

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Laser ablation impulse dependence on beam Spatial-Profile

In many previous studies, laser ablation impulse was evaluated using fluence, which is obtained by dividing the beam energy by the beam projection area on the target. This method does not consider the difference in the spatial profile of the beam energy.
Yusuke Nakamura, Tadanori Fukushima, Moriyama, Daichi, Atsushi Isomura, Satoshi Wada, Sasoh, Akihiro, Katsuhiko Tsuno, Tsuno, Katsuhiko, Daichi Moriyama, Takayo Ogawa, Akihiro Sasoh, Nakamura, Yusuke, Fukushima, Tadanori, Isomura, Atsushi, Wada, Satoshi, Ogawa, Takayo   +15 more
core   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Unlocking Exceptional Strengthening in Aluminum Alloys via Interstitial Cottrell Atmosphere Formation

Advanced Functional Materials, EarlyView.
Cyclic unloading‐aging‐reloading micro‐tensile tests under various aging durations and temperatures, combined with comprehensive microstructural characterization reveal that the yield point phenomenon in Aluminum‐Carbon (Al‐C) thin films originates from Cottrell atmosphere formation.
Zion Lee, Hojang Kim, Yixuan Hu, Injong Oh, Tae‐Hyeok Kang, Hyeonbeen Noh, Yuhyun Park, Sunkun Choi, Pyuck‐Pa Choi, Kolan Madhav Reddy, Gi‐Dong Sim   +10 more
wiley   +1 more source

Nanosecond pulsed laser surface nanotexturing of tantalum: Correlation between diffusion length model and experimental observations

, 2019
Click on the DOI link to access the article (may not be free).The diffusion length of surface textured tantalum using AVIA 355® nanosecond laser was correlated with the different laser parameters.
Mahmood Al Bashir, Nair, Rajeev, Rajeev Nair, Bashir, Mahmood Al   +3 more
core   +1 more source

Adaptive robust control of longitudinal and transverse electron beam profiles

Physical Review Accelerators and Beams, 2016
Feedback control of the longitudinal and transverse electron beam profiles are considered to be critical for beam control in accelerators. In the feedback scheme, the longitudinal or transverse beam profile is measured and compared to a desired profile ...
Amin Rezaeizadeh, Thomas Schilcher, Roy S. Smith   +2 more
doaj   +1 more source

Near-Infrared Switching of Light-Guided Random Laser

IEEE Photonics Journal, 2018
We report on all-optical modulation and switching of light-guided random laser emission in optically pumped dye-doped nematic liquid crystals, whereby a continuous-wave near-infrared beam at 1.064 μm, nonresonant with the medium and ...
Sreekanth Perumbilavil, Martti Kauranen, Gaetano Assanto   +2 more
doaj   +1 more source

Blood Biomarkers and Surface‐Enhanced Raman Spectroscopy for Gout: A Comprehensive Review

Advanced Functional Materials, EarlyView.
Schematic illustrating gout disease progression from asymptomatic hyperuricemia to chronic tophaceous disease, highlighting the limitations of conventional imaging and biochemical diagnostics and the potential of engineered SERS platforms for ultrasensitive blood‐based detection of urate‐related biomarkers across disease stages, with the color gradient
Isuri Perera, Chiranjeevi Kanike, Appurva Tiwari, Hongyan Wu, Larry D. Unsworth, Ben Bin Xu, Xuehua Zhang   +6 more
wiley   +1 more source

Prediction and optimization of residual stresses, weld-bead profile and mechanical properties of laser welded components [PDF]

, 2006
Recently, laser welding has become a leading industrial joining process. Mainly because it has become highly automated using sophisticated robotic systems. However, to make effective use of automated laser welding it is essential to have a high degree of
Benyounis, Khaled
core  

Laser beam profile analysis of a hole coupled free-electron laser

Physical Review Special Topics. Accelerators and Beams, 2010
We present measurements and numerical simulations of the laser beam transverse profile of the CLIO infrared free-electron laser (FEL). This FEL uses a hole coupling extraction system, which introduces important perturbation on the intracavity optical ...
R. Prazeres, J.-P. Berthet, F. Glotin, J.-M. Ortega, B. Biswas, U. Kale   +5 more
doaj   +1 more source