Results 51 to 60 of about 1,243,301 (300)

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

Advanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang, Christopher Wöpke, Toni Seiler, Jared Faisst, Mathias List, Meike Kuhn, Bekcy Joseph, Alexander Ehm, Dietrich R. T. Zahn, Yana Vaynzof, Eva M. Herzig, Roderick C. I. Mackenzie, Uli Würfel, Maria Saladina, Carsten Deibel   +14 more
wiley   +1 more source

100W single mode single polarization picosecond ytterbium doped fibre MOPA frequency doubled to 530nm

, 2009
High average power laser sources operating in the picosecond (ps) regime are useful for a wide range of applications including frequency-doubling and pumping of OPOs.
Lin, Dejiao, Richardson, D.J., Chen, K.K., Malinowski, A., Hayes, J.R., Alam, S.-U.   +5 more
core   +2 more sources

A low jitter regenerative amplification picosecond pulse laser with the external trigger signal as local main wave for the SLR

Results in Optics
A distributed feedback picosecond (DFB) pulse laser has been designed with a single pulse energy of 5 pJ and a pulse width of 200 ps, resulting in a spectrum width of 0.12 nm.
Mingliang Long, Zhibo Wu, Ming Wen, Yan Liang, Haifeng Zhang, Hao Chang, Huarong Deng, Zhongping Zhang   +7 more
doaj   +1 more source

Green Picosecond Laser Machining of Thermoset and Thermoplastic Carbon Fiber Reinforced Polymers

Micromachines, 2021
There has been an increase in demand for the development of lightweight and high-strength materials for applications in the transportation industry. Carbon fiber reinforced polymer (CFRP) is known as one of the most promising materials owing to its high ...
Insung Choi, Su-Jin Lee, Dongsig Shin, Jeong Suh   +3 more
doaj   +1 more source

Picosecond Laser Ablation of Dentine in Endodontics

Lasers in Medical Science, 1999
. The interaction of picosecond laser radiation with human dental tissue was investigated in this study, in order to determine the ablation rates and the surface characteristics of the dentine by using scanning electron microscopy (SEM). Dentine ablation was performed by using tooth sections of different thicknesses (0.5–2.0 mm).
Serafetinides, AA, Khabbaz, MG, Makropoulou, MI, Kar, AK   +3 more
openaire   +2 more sources

Picosecond laser welding of similar and dissimilar materials [PDF]

, 2014
We report picosecond laser welding of similar and dissimilar materials based on plasma formation induced by a tightly focused beam from a 1030 nm, 10 ps, 400 kHz laser system.
Thomson, Robert R., Carter, Richard M.; id_orcid, Hand, Duncan P.; id_orcid, Chen, Jianyong, Shephard, Jonathan D.; id_orcid   +4 more
core   +1 more source

Femtosecond vs. picosecond laser material processing

, 2022
S.34-38Laser materials processing has been an intensive research topic since the invention of the laser. nowadays, lasers are used as efficient and qualified tools in many industrial processes, like heavy industrial cutting, hardening, and welding ...
Nolte, S., Tünnermann, A., Limpert, J.
core   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

Advanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela, Sergio Triviño‐Sánchez, Andrés Guerrero‐Martínez, Luis M. Liz‐Marzán, Guillermo González‐Rubio   +4 more
wiley   +1 more source

Research on fiber-solid hybrid picosecond laser technology based on serrated aperture beam shaping

Frontiers in Physics
The high beam fill factor of the flat-top laser can effectively increase the output power of the laser without damaging the components. A fiber-solid hybrid high-energy picosecond pulsed laser system was studied, which realized the gain bandwidth ...
Shun Li, Yang Yang, Haiqiang Wang, Yunchen Zhu, Meijiao Wang, Chao Ma, Xinmin Fan, Yang Zhao, Huizhe Jing, Daiping Liu   +9 more
doaj   +1 more source

Effect of surface plasmon on optical detection of picosecond ultrasonic pulses generated in aluminum nanofilms

Photoacoustics, 2023
Photoacoustic and thermoacoustic detection methods, including picosecond ultrasonic laser sonar based on metallic thin films, are widely used in industrial applications for their noninvasiveness.
Ting-Shan Lee, Chi-Kuang Sun
doaj   +1 more source