Results 101 to 110 of about 4,075,667 (324)

Microstructure‑Dependent Phase Transformations Under High‑Pressure Laser Heating in Additively Manufactured AlCrFe2Ni2

Advanced Engineering Materials, EarlyView.
Additively manufactured AlCrFe2Ni2 with contrasting BCC/B2‐dominant and lamellar FCC + BCC/B2 microstructures exhibits the same pressure‐induced BCC/B2 → HCP transformation. Under laser heating at high pressure, HCP is destabilized, and a cubic BCC/B2 + FCC assemblage is recovered, while the lower‐scan‐speed microstructure transforms at a lower ...
Raimundas Sereika, Hunter Kantelis, Yogesh K. Vohra, Shengbiao Zhang, Wuxian Yang, Wen Chen   +5 more
wiley   +1 more source

Thermal Cycle–Microstructure–Property Relationships in Rail Steel Heat‐Affected Zone Simulated by Gleeble

Advanced Engineering Materials, EarlyView.
Microstructural evolution of premium rail steel during flash butt welding (FBW), comparing physically simulated heat‐affected zones with actual weld regions. Thermal cycles induce phase transformations and microstructural heterogeneity that influence weld quality and mechanical performance. These findings provide insights into optimizing FBW parameters
Emmanoelle Cintra da Cunha Araújo, João Marcos da Silva Nunes, Marcelly Cristiny Nunes de Carvalho, Alex Rojas, Cristie Luis Kugelmeier, Cristhian Ricardo Loayza Loayza, João Carlos Ferreira, Maria Veronica Goncalves Rodrigues, Rute Sayuri Kano, Isaac Araújo Furtado, Jacyara Dalylla da Silva Nunes, Jhonatan Peres de Sousa, Marcos Natan da Silva Lima, Eden Santos Silva, Gedeon Silva Reis, Samuel Filgueiras Rodrigues   +15 more
wiley   +1 more source

Gimbaled 2D scanning mirror with vertical combs for laser display

, 2006
We designed a gimbaled 2D scanning mirror (GSM) which is driven electrostatically by vertical comb fingers. The horizontal scanning mirror with a diameter of 1mm is rotating with respect to y-axis in the eye-shaped frame.
Yoo, Ji-Beom, Kim, Jun-O., Chang, Seok-Mo, Chung, Seok-Whan, Sunu, John, Kang, Seok-Jin, Park, Yong-Hwa, Ko, Young-Chul, Shin, Seong-Ho, Cho, Yong-Chul, Jeong, Hyun-Gu, Cho, Jin-Woo, Lee, Jin-Ho   +12 more
core   +1 more source

fMRI evidence of ‘mirror’ responses to geometric shapes [PDF]

, 2012
Mirror neurons may be a genetic adaptation for social interaction [1]. Alternatively, the associative hypothesis [2], [3] proposes that the development of mirror neurons is driven by sensorimotor learning, and that, given suitable experience, mirror ...
Heyes, C., Heyes Cecilia, Widmann, H, Clare Press, Press, C., Bird Geoffrey, Catmur, C, Press, C, Heyes, C, Cook, R, Bird, G., Cecilia Heyes, Cook Richard, Geoffrey Bird, Press Clare, Avenanti, A., Widmann Hannah, Heyes, Cecilia, Richard Cook, Bird, Geoffrey; id_orcid, Cook, R., Catmur, Caroline; id_orcid, Widmann, Hannah, Hannah Widmann, Bird, G, Widmann, H., Bird, Geoffrey, Heyes, Cecelia, Catmur, C., Catmur Caroline, Clare Press, Cook, Richard; id_orcid, Press, Clare, Caroline Catmur   +33 more
core   +2 more sources

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Low Voltage and Pull-in State Adjustable Dual Servo Scanning Mirror

, 2012
[[abstract]]This paper reports a new dual-servo-scanning-mirror, which makes use of thermal and electrostatic driving principles. By tuning loading of the thermal and electrostatic actuator individually, one can increase the scanning-angle of the ...
Wang, Kerwin; Bohringer, Karl F. ; Sinclair, Mike
core  

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

Advanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen, Patryk Wąsik, Juan Fernando Cucuyame Morales, Marie Kate Palau, Adrian Francisco Duran Ornelas, Phani Saketh Dasika, Jin Hee Kim, Radhika Laxminarayana, Eric Hintsala, Greta Chang, Junzhi Liao, Lizhi Sun, Nathan Lord, Atsushi Arakaki, Paul Bardunias, Pablo Zavattieri, David Kisailus   +16 more
wiley   +1 more source

Optical coherence tomography based on high-speed scanning MEMS mirror

, 2005
An optical coherence tomography (OCT) system based on a high-speed microelectromechanical system (MEMS) mirror is presented. This scanning mirror has high-speed performance because it was actuated by vertical comb drive.
Chen, Z, McCormick, DT, Tien, NC, Jung, W, Zhang, J   +4 more
core   +1 more source

Three-dimensional endoscopic optical coherence tomography by use of a two-axis microelectromechanical scanning mirror [PDF]

, 2006
We present a three-dimensional (3D) endoscopic optical coherence tomography (OCT) system based on a dual-axis scanning microelectromechanical system (MEMS) mirror.
Chen, Z, McCormick, DT, Zhongping Chen, Tien, NC, Jung, Woonggyu, Jung, W, Tien, Norman C, Jun Zhang, Daniel T. McCormick, Wang, L, Lei Wang, McCormick, Daniel T, Woonggyu Jung, Chen, Zhongping, Norman C. Tien, Wang, Lei, Zhang, Jun, Zhang, J   +17 more
core   +1 more source

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

Advanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam, Jihyun Kim, Soobeen Ji, In Soo Kim, Sejin Kim, Eungseon Yeon, Do Kyung Hwang, Iva Plutnarová, Zdeněk Sofer, Sang Min Won, Joohoon Kang   +10 more
wiley   +1 more source