Results 21 to 30 of about 2,880 (223)

Lasers for the treatment of coronary artery disease: An update

open access: yesHeart India, 2020
In the present era, percutaneous coronary intervention is being done for various types of coronary lesions worldwide. However, calcified and fibrotic lesions have remained a major challenge in coronary interventions.
Akshyaya Pradhan   +2 more
doaj   +1 more source

Development of Laser Ablation Integrated Simulation Program for Windows with Visual Fortran and OpenGL [PDF]

open access: yes한국정밀공학회지, 2017
An integrated simulation program for virtual laser ablation is developed to help understand and predict the effects of machining parameters on the final machined results.
Se Yoon Bang
doaj   +1 more source

Electrohydrodynamic excimer laser: Ultra-compact system and laser energy performance dynamics

open access: yesAPL Photonics
Excimer lasers, essential deep ultraviolet gas light sources, have consistently encountered significant challenges in achieving miniaturization while maintaining high performance. These challenges have limited their broader application and development in
Jin-Liang Han   +6 more
doaj   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu   +7 more
wiley   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

open access: yesAdvanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand   +13 more
wiley   +1 more source

Effect of open ultraviolet germicidal irradiation lamps on functionality of excimer lasers used in cornea surgery [PDF]

open access: yesInternational Journal of Ophthalmology, 2017
We report on the impact of direct ultraviolet germicidal irradiation (UVGI) on reflective optics, used in the excimer laser system Allegretto Eye-Q. The aim of our work was to confirm our hypothesis based on long-rate observations of obtained anomalies ...
Jaroslavas Belovickis   +2 more
doaj   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

open access: yesAdvanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang   +14 more
wiley   +1 more source

Laser and Lights in Psoriasis

open access: yesIndian Journal of Dermatology
Psoriasis is a chronic inflammatory skin condition affecting millions of individuals worldwide. Over the years, various treatment modalities have been explored to alleviate the symptoms and improve the quality of life for patients with psoriasis.
Aarti Sarda   +3 more
doaj   +1 more source

The performance and the characterization of laser ablation aerosol particle time-of-flight mass spectrometry (LAAP-ToF-MS) [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
Hyphenated laser ablation–mass spectrometry instruments have been recognized as useful analytical tools for the detection and chemical characterization of aerosol particles.
R. Gemayel   +6 more
doaj   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced 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   +11 more
wiley   +1 more source

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