Results 21 to 30 of about 8,954 (203)

Nonlinear ultrafast laser processing of diamond surfaces for precision microfabrication

Physical Sciences and Technology
Ultrafast femtosecond laser processing provides a versatile platform for precision micro- and nanoscale modification of wide-bandgap materials such as diamond.
Yelena White
doaj   +3 more sources

Ultrafast-laser powder bed fusion of oxygen-deficient Nb2O5 ceramics with highly improved electrical properties

Materials & Design, 2022
In this work, Nb2O5 layers with highly improved electrical properties respect to pristine material have been produced by ultrafast-laser powder bed fusion process.
B. Sotillo, R. Ariza, P. Fernández, J. Solis   +3 more
doaj   +1 more source

In-situ real-time monitoring of ultrafast laser processing using wide-field high-resolution snapshot compressive microscopy

Light: Advanced Manufacturing
Over the last few decades, ultrafast laser processing has become a widely used tool for manufacturing microstructures and nanostructures. The real-time monitoring of laser material processing provides opportunities to inspect processes and provide ...
Xiaodong Wang, Miao Cao, Ziyang Chen, Jiao Geng, Ting Luo, Yufei Dou, Xing Liu, Liping Shi, Xin Yuan   +8 more
doaj   +1 more source

Ultrafast Laser Processing of Diamond Materials: A Review

Frontiers in Physics, 2021
Diamond laser engineering is of great importance for designing devices, which find applications in radiation sensing and quantum technologies. A review of the present state of the art of experimental and theoretical studies on ultrashort laser ...
Tzveta Apostolova, Tzveta Apostolova, Vasyl Kurylo, Iaroslav Gnilitskyi, Iaroslav Gnilitskyi   +4 more
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Ultrafast Optical Field Engineering for Laser Micro- and Nanofabrication

Photonics
Ultrafast laser micro- and nanofabrication has emerged as a powerful platform for precision manufacturing due to the unique capability of femtosecond pulses to provide highly localized energy deposition and controlled laser–matter interactions.
Serguei P. Murzin
doaj   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Dynamic optics for ultrafast laser processing

MATEC Web of Conferences, 2013
We present a range of dynamic optical methods to control focal fields for material processing using ultrafast lasers. Adaptive aberration correction maintains focal quality when focusing deep into materials.
Salter Patrick, Booth Martin
doaj   +1 more source

Advances in Laser Drilling of Structural Ceramics

Nanomaterials, 2022
The high-quality, high-efficiency micro-hole drilling of structural ceramics to improve the thermal conductivity of hot-end parts or achieve high-density electronic packaging is still a technical challenge for conventional processing techniques. Recently,
Xianshi Jia, Yongqian Chen, Lei Liu, Cong Wang, Ji’an Duan   +4 more
doaj   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source