Results 61 to 70 of about 12,674 (311)

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

open access: yesAdvanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel   +7 more
wiley   +1 more source

China motorization trends: New directions for crowded cities

open access: yesJournal of Transport and Land Use, 2010
This paper examines two major emerging constraints on transport in fast-growing Chinese urban cities: oil supply and urban infrastructure. The research considers automobile technology, alternative fuels, and mobility choices, as well as policy measures ...
Wei-Shiuen Ng, Lee Schipper, Yang Chen
doaj   +1 more source

Freeform Fabrication of Layered Halide Perovskite Nanowire Heterojunctions

open access: yesAdvanced Materials, EarlyView.
‘All‐at‐once’ freeform fabrication of layered perovskite nanowire heterojunctions is realized by 3D printing employing meniscus‐guided crystallization. The integration of nanoscale additive manufacturing with layered halide perovskites will provide a versatile platform to freely design and realize highly stable perovskite‐based optoelectronic ...
Sixi Cao   +8 more
wiley   +1 more source

Identifying and Surpassing Contextual Barriers in Cross-Border Research Collaboration: The Case of the Sino-Swedish Project Shanghai Local Interaction Platform [PDF]

open access: yes, 2013
The Swedish advanced knowledge in integrating within a vastly car-oriented transport system a new (or improved) breed of sustainable public transport operations, complemented by the Chinese ability to speedily support urban design innovation that could ...
Nikitas, Alexandros, Rahe, Ulrike
core  

Hydrogel‐Based Airway‐on‐Tube With Perfusable Endothelial Lumen and Outward Epithelialization

open access: yesAdvanced Materials, EarlyView.
A hydrogel‐based airway‐on‐tube platform featuring a perfusable endothelial lumen and outward epithelialization is presented. The system supports primary human bronchial epithelial and lung microvascular endothelial coculture under air‐liquid interface conditions.
Ali Doryab   +8 more
wiley   +1 more source

An Assessment of Low-Cost Tractor Motorization with Main Farming Implements

open access: yesWorld Electric Vehicle Journal, 2020
The objective of the present work is to evaluate the performance of a low-cost tractor equipped with a parallel hybrid engine, which was simulated using AMESim software.
Yassine Zahidi   +3 more
doaj   +1 more source

A Super‐Adhesive Air Filter With Capillarity‐Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange

open access: yesAdvanced Materials, EarlyView.
We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park   +11 more
wiley   +1 more source

OpenStage: a low-cost motorized microscope stage with sub-micron positioning accuracy.

open access: yesPLoS ONE, 2014
Recent progress in intracellular calcium sensors and other fluorophores has promoted the widespread adoption of functional optical imaging in the life sciences. Home-built multiphoton microscopes are easy to build, highly customizable, and cost effective.
Robert A A Campbell   +2 more
doaj   +1 more source

Mechanical Stress Evolution in Polycrystalline Ge Thin Films Under MeV Ion Irradiation

open access: yesAdvanced Materials Interfaces, EarlyView.
Irradiation of polycrystalline Ge thin films with 1.8 MeV Au ions alters residual stress through defect generation and lattice expansion. Increasing fluence drives progressive lattice disorder and eventual amorphization. Polycrystalline Ge resists amorphization longer than crystalline Ge, as grain boundaries facilitate defect diffusion, significantly ...
Karla J. Paz Corrales   +10 more
wiley   +1 more source

MOTORIZATION PROCESS AND MANAGEMENT IN BIG CITIES IN CHINA

open access: yesIATSS Research, 2007
China is in a fast growing stage of urbanization and mobility development. The urbanization level of China increased from 36.09% in 2000 to 42.99% in 2005. The growth of vehicle numbers is also quite striking.
Hong MA
doaj   +1 more source

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