Results 101 to 110 of about 277,643 (298)

Biohybrid Crawling Robot With Spiral‐Spring Backbone and Inclined Legs for Enhanced Locomotion

Advanced Materials, EarlyView.
We present a biohybrid crawling robot integrating a muscle ring with a flexible skeleton combining two complementary structural elements. The spiral‐spring backbone enables large‐amplitude bending without compromising axial stability, while outward‐inclined legs with unequal front–rear lengths effectively convert deformation into directional strides ...
Tomohiro Morita, Minghao Nie, Shoji Takeuchi   +2 more
wiley   +1 more source

Broadband Yb:CaF2 regenerative amplifier for millijoule range ultrashort pulse amplification

, 2010
International audienceWe report a diode-pumped regenerative amplifier based on Yb:CaF2 material delivering up to 1.8 mJ at 100 Hz. The pulses have a spectral bandwidth of 16nm, indicating a good potential for millijoule range sub 100 fs pulse ...
Druon, Frédéric, Camy, Patrice, Moncorgé, Richard, Ricaud, Sandrine, Benayad, Abdel, Delaigue, Martin, Georges, Patrick, Courjaud, Antoine, Doualan, Jean-Louis, Mottay, Eric   +9 more
core  

Highly Sensitive Broadband Photodetectors Based on Donor–Acceptor 2D Conjugated Coordination Polymers

Advanced Materials, EarlyView.
Donor–acceptor molecular design and chemical vapor deposition growth enable the two‐dimensional nickel‐tetraaminobenzoquinone films with strong broadband absorption and efficient charge separation. The resulting photodetectors exhibit a structured broadband response with a high responsivity of ∼3.1 A W−1 and a response time of ∼170 µs, which surpasses ...
Yunxu Chen, Jinxin Liu, Shuai Fu, Apurba Mahapatra, Dongxu Wang, Mike Hambsch, Angelika Wrzesińska‐Lashkova, Jing Wang, Fabian Paulus, Yana Vaynzof, Stefan C. B. Mannsfeld, Fuchun Zhang, Mischa Bonn, Renhao Dong, Xinliang Feng   +14 more
wiley   +1 more source

High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique [PDF]

, 2010
Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially
Alou Cervera, Pedro, Cobos Márquez, José Antonio, Gimeno Martín, Alejandro, Vasic, Miroslav, Pardo Martin, José Manuel, Ortega González, Francisco Javier, Oliver Ramírez, Jesús Angel, Díaz López, Daniel, Benavente Peces, César, García Suárez, Oscar   +9 more
core  

Biomass DNA: An Emerging Building Block for Advanced Materials

Advanced Materials, EarlyView.
Biomass DNA is rapidly emerging from its traditional role as a genetic blueprint to serve as a versatile abundant, highly programmable polymeric building block. This review highlights the transformation of macroscopic bulk biomass DNA into next generation of functional materials, spanning from dynamic hydrogels, sustainable bioplastics, and high ...
Yuwei Hu, Itamar Willner, Li Niu
wiley   +1 more source

Mechanoactive Biomaterials for Cell–Matrix Mechanotransduction

Advanced Materials, EarlyView.
The graphical abstract shows how individual triggers (force, light, or temperature) and combined optothermal or receptor‐targeted actuation induce material responses at the tissue, cellular, and receptor scales. Their spatial (global or focused) and temporal (continuous or cyclic) modulation determines the resulting mechanical output.
Yi‐Tung Lu, Alison E. John, Marc A. Fernández‐Yagüe   +2 more
wiley   +1 more source

Graphene Layers as Functional Biomaterials. From Fabrication and Characterization to Biological Applications

Advanced Materials Interfaces, EarlyView.
Graphene layers are fabricated on Cu foil and transferred onto glass substrates to form double‐ and multi‐layer G‐glass. Raman spectroscopy confirms structural integrity, while SEM and fluorescence microscopy reveal favorable adhesion and spreading of L‐929 fibroblast cells.
Mariana Mihaela Apostol, Issam Boukhoubza, Daniela Oprea, Iulia Corina Ciobotaru, Catalin Negrila, Ionut Enculescu, Ecaterina Andronescu, Teodor Adrian Enache, Elena Matei   +8 more
wiley   +1 more source

110-Fs Fourier-Transform Limited Gaussian Pulses From A Crlisaf Regenerative Amplifier

, 1993
We report stable operation of a flashlamp-pumped LiSrAlF6:Cr3+ regenerative amplifier for femtosecond pulses using chirped pulse amplification, We achieve Fourier-transform limited pulses of 100 fs duration with a time-bandwidth product of 0.44 and a ...
Beaud, P., Miesak, E., Chen, Y. F.
core   +2 more sources

TWO-CASCADE REGENERATIVE AMPLIFIERS OF O-TYPE OF THE SUBMILLIMETRIC WAVE BANDS

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The mathematical model of the two-cascade orboklystron-amplifier with sheet beams is formulated. Calculations of amplitude characteristics of regenerative amplifiers on frequency of 180 GHz are resulted.
A. V. Aksenchyk, I. F. Kirinovich
doaj  

Life‐Like Ferrous Oxide Microspheres from Kombucha

Advanced Materials Interfaces, EarlyView.
Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source