Results 81 to 90 of about 1,354,843 (287)

Pulsed Laser Micro Polishing: Surface Prediction Model [PDF]

, 2011
This project is focused on developing physics-based models to predict the outcome of pulsed laser micro polishing (PL P). Perry et al. have modeled PL P as oscillations of capillary waves with damping resulting from the forces of surface tension and ...
Li, Xiaochun, Ma, Chao, Duffie, Neil A., Pfefferkorn, Frank E., Vadali, Madhu   +4 more
core  

Advances and Challenges in Pulsed Laser Deposition for Complex Material Applications

, 2023
Various physical vapor deposition (PVD) techniques, such as molecular beam epitaxy, electron beam physical vapor deposition, pulsed laser deposition (PLD), arc discharge, magnetron sputtering and/or ion beam sputtering, are currently used for coating or ...
Liviu Duta, Ion N. Mihailescu
core   +1 more source

Oligoethylene Glycol Side‐Chain Engineering of Y6‐Derived Nonfullerene Acceptors for Thermally Induced Spontaneous Pseudo‐Planar Heterojunction Organic Photodetectors

Advanced Functional Materials, EarlyView.
OEG‐functionalized Y6‐derived acceptors induce thermally driven vertical phase separation, enabling pseudo‐planar heterojunction organic photodetectors. The resulting PM6:YTEG‐4F and PM6:YTEG‐4Cl organic photodetectors suppress dark current density by approximately 260‐fold and 210‐fold, respectively, while maintaining efficient photoresponse ...
Se Jeong Park, Sang Young Jeong, Yunji Eom, Yelim Kang, Yeonsu Choi, Seunghyun Rhee, Bo Ram Lee, Bong Joo Kang, Nam Joong Jeon, Jae Won Shim, Han Young Woo, Seo‐Jin Ko   +11 more
wiley   +1 more source

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

Advanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto, Javier Zamudio‐García, Abraham Sánchez‐Caballero, David Marrero‐López, Vincenzo Esposito   +4 more
wiley   +1 more source

Femtosecond laser ablation (fs-LA) and sputter XPS depth profiling of a tantalum nitride thin film – a comparative study

Applied Surface Science Advances
Tantalum nitride (TaNx) is a commonly used material for thin films in semiconductor devices and as a protective coating for engineering applications. X-ray photoelectron spectroscopy (XPS) depth profiling is widely employed to analyse the composition of ...
C.W. Chandler, D.S. Devadasan, H. Oppong-Mensah, G. Greczynski, T.S. Nunney, M.A. Baker   +5 more
doaj   +1 more source

Detection of cracks in metal sheets using pulsed laser generated ultrasound and EMAT detection [PDF]

, 2011
A pulsed Nd: YAG laser with an approximately Gaussian beam shape is directed onto the surface of an aluminium sheet at an energy density below which damage by laser ablation occurs, generating Lamb waves in the sheet.
Dixon, S., Burrows, S. E. (Susan E.), Dutton, B. (Ben), Fan, Yichao   +3 more
core   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Sub‐1 ms Optoelectronic Synapse Based on {ZnCdO/ZnO} Multilayer Structure for High‐Speed Neuromorphic Vision Systems

Advanced Functional Materials, EarlyView.
Eu‐doped {ZnCdO/ZnO} structures grown on Si are developed, showcasing dual‐functionality controlled by europium doping. While high europium concentration transforms the device into an ultrafast, self‐powered photodetector, low‐doped structures can be used as an optoelectronic synapse.
Igor Perlikowski, Eunika Zielony, Adrian Kaim, Ewa Przeździecka   +3 more
wiley   +1 more source

Irregular, Adaptive Scan Trajectories for Pulsed Laser Micro Polishing [PDF]

, 2013
The objective of this work is to generate irregular, smooth, adaptive laser scan trajectories for pulsed laser micro polishing (PL?P). Traditionally PL?P, like other surface finishing processes has used zigzag scan paths.
Li, Xiaochun, Ma, Chao, Duffie, Neil A., Pfefferkorn, Frank E., Vadali, Madhu   +4 more
core  

Photovoltaic Stimulation of Mouse and Pig Retina With Pyrolytic Carbon Microelectrodes Integrated on High‐Density Silicon Solar Cell Arrays

Advanced Healthcare Materials, EarlyView.
In this study, we fabricate photovoltaic retinal implants with pyrolytic carbon electrodes and test their ability to stimulate mouse and pig retinas when illuminated with near‐infrared light. We find increased spiking activity in both animal models compared to spontaneous activity and TTX controls and analyze the spike amplitude, latency and frequency.
Akihiro Matsumoto, Pratik Kusumanchi, Jesper Guldsmed Madsen, Asbjørn Cortnum Jørgensen, Gisele Alves dos Reis Benatto, Sune Thorsteinsson, Peter Behrensdorff Poulsen, Keisuke Yonehara, Toke Bek, Stephan Sylvest Keller, Rasmus Schmidt Davidsen   +10 more
wiley   +1 more source