Results 51 to 60 of about 59,140 (302)

Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
State‐of‐the‐art computations unravel the intricate decoherence dynamics of the boron vacancy center in hexagonal boron nitride across magnetic fields from 0 to 3 T. Five distinct regimes emerge, dominated by nuclear spin interactions, revealing optimal coherence times of 1–20 µs in the 180–350 mT range for isotopically pure samples.
András Tárkányi, Viktor Ivády
wiley   +1 more source

Research Progress and Prospect on Laser Drilling Technology

Shiyou jixie, 2016
The conventional rotary drilling usually leads to drilling tool wear, which results in frequent drill bit replacement, causing long drilling period and high cost.The laser drilling technology could greatly improve the drilling speed and shorten the ...
Zhang Shiyi, Han Bin, Li Meiyan, Wang Yong, Sun Jianan   +4 more
doaj  

Femtosecond laser drilling 100 μm diameter micro holes with aspect ratios > 20 in a Nickel based superalloy

Journal of Materials Research and Technology
Micro holes with high aspect ratios are essential for the cooling performance of aero-engines. Challenges persist in deep hole drilling due to the escalating stringent requirements in terms of hole diameters, aspect ratios, and 3D profiles. In this study,
Nan Zhang, Manshi Wang, Mingxia Ban, Lanjun Guo, Weiwei Liu   +4 more
doaj   +1 more source

A Normal Sensor Calibration Method Based on an Extended Kalman Filter for Robotic Drilling

Sensors, 2018
To enhance the perpendicularity accuracy in the robotic drilling system, a normal sensor calibration method is proposed to identify the errors of the zero point and laser beam direction of laser displacement sensors simultaneously.
Dongdong Chen, Peijiang Yuan, Tianmiao Wang, Ying Cai, Haiyang Tang   +4 more
doaj   +1 more source

The effect of material cyclic deformation properties on residual stress generation by laser shock processing [PDF]

, 2019
Laser shock processing (LSP) is a mechanical surface treatment to induce a compressive residual stress state into the near surface region of a metallic component.
Angulo, I., Cordovilla, F., Fitzpatrick, M. E., García-Beltrán, A., Langer, K., Ocaña, J. L., Smyth, N. S.   +6 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Optimization of the Laser Drilling Processing Parameters for Carbon Steel Based on Multi-Physics Simulation

Metals
The laser drilling of carbon steel is always suffered from the formation of slag, the presence of cutting burrs, the generation of a significant quantity of spatter, and the incomplete penetration of the substrate.
Shanqing Liang, Fengxian Li, Yichun Liu, Jianhong Yi, Jürgen Eckert   +4 more
doaj   +1 more source

Maskless etching of silicon using patterned microdischarges [PDF]

, 2001
Microdischarges in flexible copper-polyimide structures with hole diameters of 200 µm have been used as stencil masks to pattern bare silicon in CF4/Ar chemistry. The discharges were operated at 20 Torr using the substrate as the cathode, achieving etch
Giapis, K. P., Sankaran, R. M.
core   +1 more source

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

Advanced Functional Materials, EarlyView.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato, Haishuo Guan, Bianca M. Carrara, Mira Jacobs, Matteo Monticelli, Lukas Moser, Thomas Moragues, Andrew J. deMello, Tomaso Zambelli, Martin Ehrbar   +9 more
wiley   +1 more source

A Novel Method to Reduce the Laser Drilling Time for Hole Cluster considering the Influence of Residual Vibration of the Sample Stage

Shock and Vibration, 2020
In large areas of laser drilling, the residual vibration occurs when the sample stage moves in PTP (Point to Point) movement. It affects the surface quality and processing efficiency of the holes.
Xiaodong Wang, Bin Liu, Xuesong Mei, Jun Yang, Xialun Yun, Xiao Li, Jian Li   +6 more
doaj   +1 more source