Results 201 to 210 of about 69,500 (287)

Nanomodification of Polyethylene via Focused Electron Beam Irradiation: Controlled Crazing and Application to Crack Arresting

Advanced Materials Technologies, EarlyView.
Focused electron beam (FEB) irradiation precisely modifies polyethylene (PE) at the nanoscale, resulting in controlled crazing characterized by microvoids and microfibrils. Additionally, the technique can be applied for crack arrest under tensile stress.
Sirorat Toocharoen, Masayuki Shimojo
wiley   +1 more source

Reply to Siqueira-Batista and Gómez: Underscoring the importance of biosafety for the return of Martian samples. [PDF]

Proc Natl Acad Sci U S A
Whetsel CW, Levine JS, Hoffman SJ, Antonsen EL.   +3 more
europepmc   +1 more source

When Cellulose Moves: Smart Sensors and Actuators

Advanced Materials Technologies, EarlyView.
This review highlights cellulose‐derived soft actuators alongside with cellulose‐based sensors. Emphasis is placed on their integration into multifunctional devices that couple sensing and actuation to mimic natural motion and adaptability. We also discuss the challenges of achieving robust, reversible, and multi‐stimuli‐responsive motion, and outline ...
Francisco Sousa, José F. Malta, Ana P. C. Almeida   +2 more
wiley   +1 more source

Understanding and Circumventing Failure Mechanisms in Chalcogenide Optical Phase Change Material Ge2Sb2Se4Te

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Chalcogenide optical PCMs have gathered interest for their potential in compact, non‐volatile optics and photonics. Free‐space PCM metasurfaces require new considerations from phase change memory that need to be addressed for reliable scale‐up. Several failure mechanisms pertaining to free‐space PCM devices and layout methods are isolated to prevent ...
Cosmin Constantin Popescu, Kiumars Aryana, Brian Mills, Tae Woo Lee, Louis Martin‐Monier, Luigi Ranno, Jia Xu Brian Sia, Khoi Phuong Dao, Hyung‐Bin Bae, Vladimir Liberman, Steven A. Vitale, Myungkoo Kang, Kathleen A. Richardson, Carlos A. Ríos Ocampo, Dennis Calahan, Yifei Zhang, William M. Humphreys, Hyun Jung Kim, Tian Gu, Juejun Hu   +19 more
wiley   +1 more source

Optimizing piezoelectric actuator placement for enhanced vibration control using genetic algorithms. [PDF]

Sci Rep
Wang S, Jin H, Wang Y, Huo J, Liu X.
europepmc   +1 more source

From Invisible to Visible: Pressure‐Responsive Photonic Crystals for Advanced Information Encryption

Advanced Optical Materials, EarlyView.
Multilayered composite materials are fabricated based on chiral nematic cellulose nanocrystals incorporated in a shape‐memory polymer matrix. Upon hot‐pressing, they consistently present initially hidden patterns/information with structural colors distinct from the background over multiple pressing‐recovery cycles.
Zongzhe Li, Miguel A. Soto, Wadood Y. Hamad, Mark J. MacLachlan   +3 more
wiley   +1 more source

Graphene's Frontier in aerospace: current applications, challenges, and future directions for space engineering. [PDF]

Nanoscale Adv
Kanti PK, Prashantha Kumar H G, Wanatasanappan VV, Kumar A, Regasa MB.   +4 more
europepmc   +1 more source

Advanced Emissivity Tuning Via Femtosecond Laser Surface Engineering

Advanced Optical Materials, EarlyView.
Femtosecond laser surface processing (FLSP) is employed to fabricate titanium‐based metamaterials with engineered micro/nano‐scale features that exhibit spectrally selective and omnidirectional thermal emissivity. By integrating advanced ellipsometry, electromagnetic modeling, and compositional analysis, the work reveals resonance‐driven emissivity ...
Zahra Kamali Khanghah, Andrew Butler, Andrew Reicks, Juveriya Parmar, Eva Schubert, Craig Zuhlke, Mathias Schubert, Ufuk Kilic, Mohammad Ghashami   +8 more
wiley   +1 more source

Generation of a 28 GHz annular power distribution with high power gyrotron and its application to microwave driven in tube accelerator. [PDF]

Sci Rep
Takahashi M, Yamada T, Minami R, Kariya T, Shimamura K.   +4 more
europepmc   +1 more source

Below 1% Reflectance for Black GaAs Surface Prepared by Facile Two‐Step Wet Chemical Treatment: Hydrogen Peroxide and Water

Advanced Photonics Research, EarlyView.
Black GaAs surface which decreases light reflectivity forms in surprising way when GaAs is kept first in hot hydrogen peroxide solution and then in hot‐water solution. To increase performance of many photonic devices (e.g., solar cell, light emitting diode (LED), photodetector), it is essential to decrease light reflection at device interfaces ...
Zahra Jahanshah Rad, Johanna Laaksonen, Valtteri Alitupa, Mikko Miettinen, Kari Iltanen, Juha‐Pekka Lehtiö, Sari Granroth, Ilari Angervo, Marko Punkkinen, Risto Punkkinen, Mikhail Kuzmin, Ermei Mäkilä, Pekka Laukkanen, Petriina Paturi, Kalevi Kokko, Sami Vuori, Mika Lastusaari, Harishchandra Singh, Marko Huttula, Manvedra Narayan Singh, Antti Tukiainen, Heidi Tuorila, Helmer Piirilä, Jukka Viheriälä, Mircea Guina, Jekaterina Kozlova, Mihkel Rähn, Aile Tamm   +27 more
wiley   +1 more source