Results 221 to 230 of about 1,379,637 (289)

Gromov hyperbolicity of planar graphs

Open Mathematics, 2013
Cantón Alicia, Granados Ana, Pestana Domingo, Rodríguez José   +3 more
doaj   +1 more source

Electrochemical Anodization for the Fabrication of Wafer‐Scale p‐Type Organic Permeable Base Transistors Arrays with MHz Operation

Advanced Materials, EarlyView.
This work presents a wafer‐scale fabrication method for high‐performance p‐type organic permeable base transistors (OPBTs) using electrochemical anodization. The anodized OPBTs achieve high on‐current density, low leakage, MHz‐range operation, and exceptional current gain.
Juan Wang, Amric Bonil, Jan Frede, Lautaro Petrauskas, Jörn Vahland, Tobias Antrack, Christian Matthus, Wooik Jang, Hans Kleemann   +8 more
wiley   +1 more source

Nonhamiltonian 3-Connected Cubic Planar Graphs

, 2000
R. E. L. Aldred, Sheng Bau, Derek Holton, Brendan D. McKay   +3 more
openalex   +1 more source

Full Wafer Scale Manufacturing of Directly Printed TiO2 Metalenses at Visible Wavelengths with Outstanding Focusing Efficiencies

Advanced Materials, EarlyView.
The highest experimentally determined focusing efficiency is reported here by using the direct imprinting of all‐inorganic TiO2 metalens arrays. Absolute efficiency greater than 80% and relative efficiency greater than 90% are achieved by optimization of all fabrication parameters controllable in the additive manufacturing process.
Dae Eon Jung, Vincent J. Einck, Alex Dawicki, Victor Malgras, Lucas D. Verrastro, David Grosso, Amir Arbabi, James J. Watkins   +7 more
wiley   +1 more source

On the cover time of planar graphs

, 2000
Johan Jonasson, Oded Schramm
openalex   +2 more sources

Atomically Dispersed Sn on Core‐Shell MoS2 Nanoreactors as Mott‐Schottky Phase Junctions for Efficient Electrocatalytic Hydrogen Evolution

Advanced Materials, EarlyView.
A hollow core‐shell structured Mott‐Schottky phase junction 2H@1T‐MoS2‐Sn1 nanoreactor with a definite Sn‐S2‐Mo motif is designed, which exhibits a record overpotential of 9 mV at 10 mA cm−2. The 2H@1T‐MoS2 Mott‐Schottky phase junction promotes charge transfer, while the surface Sn single atom facilitates the reduction of adsorbed H⁺, thus accelerating
Hao Jin, Yan Zhang, Zhuwei Cao, Jian Liu, Sheng Ye   +4 more
wiley   +1 more source

Synthetic Chromatophores for Color and Pattern Morphing Skins

Advanced Materials, EarlyView.
Cephalopods use chromatophore organs (muscle‐actuated pigment sacs) to alter their skin color and pattern. Synthetic chromatophores, which closely mimic the mechano‐optical process found in cephalopods using stimuli‐responsive microscale hydrogel actuators, are reported.
Brennan P. Watts, Matthew R. Jamison, John M. Kapitan, Nengjian Huang, Delroy Taylor, Stephen A. Morin   +5 more
wiley   +1 more source

High‐Performance Phototransistor Based on a 2D Polybenzimidazole Polymer

Advanced Materials, EarlyView.
A crystalline 2D polybenzimidazole polymer (2DPBI), incorporating a porphyrin‐based π‐system linked via 1,3‐diazole units, is synthesized on the water surface over large areas. The 2DPBI thin‐film exhibits high charge carrier mobility (≈240 cm2 V−1 s−1, measured by terahertz spectroscopy), strong photoresponse, and band‐like transport, enabling ...
Anupam Prasoon, Preetam Dacha, Heng Zhang, Elif Unsal, Mike Hambsch, Alexander Croy, Shuai Fu, Nguyen Ngan Nguyen, Kejun Liu, Haoyuan Qi, Sein Chung, Minyoung Jeong, Lei Gao, Ute Kaiser, Kilwon Cho, Hai I. Wang, Renhao Dong, Gianaurelio Cuniberti, Mischa Bonn, Stefan C. B. Mannsfeld, Xinliang Feng   +20 more
wiley   +1 more source

Treewidth of planar graphs: connections with duality

, 2001
Vincent Bouchitté, Frédéric Mazoit, Ioan Todinca   +2 more
openalex   +2 more sources

Bioinspired, Rapidly Responsive Magnetically Tunable Stiffness Metamaterials

Advanced Materials, EarlyView.
A 3D array of magnetoactive mechanical metamaterials enables rapid and reversible stiffness modulation under external magnetic fields. By adjusting field direction and intensity, the system exhibits diverse deformation modes and tunable modulus. This fast‐responding mechanical metamaterial offers real‐time adaptability for advanced reconfigurable and ...
Gooyoon Chung, Huy Le Quang, Jung Hyun Kim, Jeongmin Yoo, Seung Kwon Seol, Yoonseok Park   +5 more
wiley   +1 more source