Results 111 to 120 of about 2,654,873 (296)

Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots

Advanced Functional Materials, EarlyView.
Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz, Ramin Yazdaanpanah, Yongfeng Guo, Pouriya Naziri, Sachin Kulkarni, Martina Mercurio, Maria Cristina Larciprete, Ilaria Fratoddi, Paul Simon, Wan‐Lu Li, Koray Aydin, Umut Aydemir   +11 more
wiley   +1 more source

SYNTHESIS OF THE NANOCLUSTERS OF ZINC AND COPPER OXIDES FROM SOLUTIONS OF ORTHOPHOSPHATES ON LASER ABLATION OF POROUS SAMPLES [PDF]

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2012
Spectroscopic studies of the surface laser plasma formed close to the porous body containing nanoquantities of different zinc and copper salts subjected to the effect of double laser pulses were performed.
М.P. Patapovich, Trinh Ngoc Hoang, Le Thi Kim Anh, A.P. Zajogin   +3 more
doaj  

Dynamical studies on the generation of periodic surface structures by femtosecond laser pulses

MATEC Web of Conferences, 2013
The dynamics of the formation of laser-induced periodic surface structures (LIPSS) on fused silica upon irradiation with linearly polarized fs-laser pulses (50 fs pulse duration, 800 nm center wavelength) is studied experimentally using a double pulse ...
Rosenfeld A., Höhm S., Bonse J., Krüger J.   +3 more
doaj   +1 more source

Efficient Wavelength-Tunable Gain-Switching and Gain-Switched Mode-Locking Operation of a Heavily Er³⁺-Doped ZBLAN Mid-Infrared Fiber Laser

IEEE Photonics Journal, 2017
We report on an efficient wavelength-tunable gain-switched and gain-switched mode-locked Er3+-doped double-clad fiber laser with a linear cavity. Stable gain-switching and gain-switched mode-locking were achieved with slope efficiencies of 28.6% and 34.5%
Yanlong Shen, Yishan Wang, Kunpeng Luan, Hongwei Chen, Mengmeng Tao, Jinhai Si   +5 more
doaj   +1 more source

Absorption mechanism of the second pulse in double-pulse femtosecond laser glass microwelding

Optics Express, 2013
The absorption mechanism of the second pulse is experimentally and theoretically investigated for high-efficiency microwelding of photosensitive glass by double-pulse irradiation using a femtosecond laser. The transient absorption change during the second pulse irradiation for various energies induced by the first pulse is measured at different delay ...
Sizhu, Wu, Dong, Wu, Jian, Xu, Haiyu, Wang, Testuya, Makimura, Koji, Sugioka, Katsumi, Midorikawa   +6 more
openaire   +2 more sources

Multistage, Self‐Sensing Artificial Muscles With Coordination From Liquid Crystal Elastomer‐Graphene Composite Fibers

Advanced Functional Materials, EarlyView.
Inspired by skeletal muscles’ precision and endurance, CoilLCE integrates a self‐sensing liquid crystal elastomer/graphene artificial muscle with an embedded Joule‐heating copper coil, enabling closed‐loop multistage actuation with programmable intermediate states (strain accuracy of 2%), and antagonistic coordination (32% total strain). These features
Ziyun Zhang, Xuelin Wu, Yinding Chi, Qingya Huang, Yaoye Hong, Antonio Proctor Martinez, Jingxian Wu, Bingzhi He, Cynthia Sung, Shu Yang   +9 more
wiley   +1 more source

Generation and optimisation of picosecond optical pulses for use in broadband communication systems [PDF]

, 2006
The continued growth of the internet driven by the demand for media rich content and escalating IP traffic has been fuelling the massive growth in demand for bandwidth to handle very high data rates.
Rensing, Marc
core   +1 more source

All-fiber passive mode-locked laser to generate ps pulses based in a symmetrical NOLM¹ [PDF]

, 2009
We experimentally investigate an all-fiber passively mode-locked laser generating ps pulses. The experimental setup is a figure eight fiber laser configuration, including a power-symmetric Nonlinear Optical Loop Mirror (NOLM) with highly twisted low ...
BALDEMAR IBARRA ESCAMILLA, MANUEL DURAN SANCHEZ, EVGENY KUZIN   +2 more
core  

Thermoresponsive Liquid Crystalline Polymer Coatings Programmed by Field‐Induced Topological Defects for Tunable Optical and Topographical Responses

Advanced Functional Materials, EarlyView.
Resonant standing waves generate large‐area lattices of liquid‐crystal topological defects that are permanently encoded into polymer coatings by photopolymerization. The preserved director architecture produces thermally reconfigurable surface topographies while maintaining programmable optical functionality, demonstrating a scalable strategy for ...
Jacques A. Peixoto, Mufeeduzaman Chavilkkadan, Alexander Fusi, Marko Beslać, Dirk J. Broer, Etienne Brasselet, Danqing Liu   +6 more
wiley   +1 more source

Possible explanations for different surface quality in laser cutting with 1 micron and 10 microns beams [PDF]

, 2012
In laser　cutting　of　thick　steel　sheets,　quality　difference　is　observed　between　cut　surfaces　obtained　with 1 micron and 10 micron laser beams. This paper investigates physical mechanisms for this interesting and important problem of the wavelength ...
Remy Fabbro, Koji Hirano, FABBRO, Rémy, HIRANO, Koji   +3 more
core   +1 more source