Results 51 to 60 of about 2,700,967 (284)

Measurement of maximum whorl and aperture radii (R_max and r_max) of gastropod shells.

, 2013
Measurement of maximum whorl and aperture radii (Rmax and rmax) of gastropod shells.
Daniel J. Miller (476907), Janice L. Pappas (476906)   +1 more
core   +1 more source

Hydrogel‐Based Method for High‐Resolution Measurements of Contact Mechanics in Rapid Biological Adhesives: A Case Study in Cuttlefish Tentacle Strikes

Advanced Functional Materials, EarlyView.
Cuttlefish and squid can catch their prey within milliseconds using specialized tentacles and suckers. The physics of how the suckers can attach so quickly has remained a mystery given the technical challenges of studying them in vivo. In this publication, we develop a hydrogel that retains imprints of the suckers in order to estimate the forces they ...
Alexander Koehnsen, Mila F Krikke, Thomas E Kodger, Florian T Muijres, Guillermo J Amador   +4 more
wiley   +1 more source

High resolution sar image analysis by combining the pca and the azimuth sub-band decompositions [PDF]

, 2009
With the increase of the Synthetic Aperture Radar (SAR) sen- sor resolution, a more detailed analysis and a ¯ner description of SAR images are needed.
Chaabouni-Chouayakh, Houda, Datcu, Mihai
core  

Highly Efficient and Stable Roll‐to‐Roll Coated Perovskite Solar Cells Enabled by Antisolvent Vapor‐Assisted Crystallization

Advanced Functional Materials, EarlyView.
Antisolvent Vapour‐Assisted Crystallization (AVAC) enables controlled perovskite crystallization through precisely metered antisolvent vapour, eliminating liquid antisolvent waste. Compatible with roll‐to‐roll (R2R) slot‐die coating, AVAC produces uniform, pinhole‐free films with enlarged grains, delivering efficiencies of 18.3% for R2R fabricated ...
Narendra Pai, Andrew D. Scully, Yogesh Gulia, Aaron Seeber, Jueng‐Eun Kim, Luke J. Sutherland, Doojin Vak, Jacob Yin, Mark Greaves, Malisja de Vries, Mei Gao, Dechan Angmo   +11 more
wiley   +1 more source

Circular synthetic aperture radar sub‐aperture angle information complementation based on azimuth‐controllable generative adversarial network

IET Radar, Sonar & Navigation
A conditional generative adversarial network (CGAN) framework is proposed to address the issue of incomplete circular synthetic aperture radar (CSAR) azimuthal information due to motion errors.
Bingxuan Li, Yanheng Ma, Lina Chu, Wei Li, Yuanping Shi   +4 more
doaj   +1 more source

Simulation-Based Approach to the Matching of a Dielectric-Filled Circular Waveguide Aperture

Sensors
The circular waveguide aperture or open-end radiator, one of the canonical antenna elements, can be filled with a dielectric material for miniaturization.
Songyuan Xu, Jiwon Heo, Byoung-Kwon Ahn, Chan-Soo Lee, Bierng-Chearl Ahn   +4 more
doaj   +1 more source

Optimization Strategies for Multi-Aperture SAR Imaging With High Performance [PDF]

, 2007
Multi-aperture synthetic aperture radar (SAR) systems enable high performance SAR imaging thus meeting the rising demands of future remote sensing applications that conventional SAR cannot fulfill.
Moreira, Alberto, Gebert, Nicolas, Krieger, Gerhard   +2 more
core  

Construction of primary mirror and dimension of segmented sub-aperture.

, 2016
Construction of primary mirror and dimension of segmented sub-aperture.
Zongyang Wang (2550940), Haitao Nie (695971), Dan Yue (695973), Shuyan Xu (2371051)   +3 more
core   +1 more source

Thermally Robust Room‐Temperature Interlayer Excitons in a Hybrid van der Waals Heterostructure

Advanced Functional Materials, EarlyView.
We report an optically active interlayer exciton in a hybrid van der Waals (PEA)2PbBr4/MoS2 heterostructure that remains thermally stable up to 400 K. The emission exhibits polarization anisotropy consistent with an out‐of‐plane optical transition‐dipole component and shows lifetime extension indicative of electron–hole separation.
Seoyeon Ko, Hyeon Jun Jeong, Soungmin Bae, Jieun Jo, Chan Kwon, Hayoung Ko, Dong Hyeon Kim, Hyunjung Shin, Mun Seok Jeong, Seokhyun Yoon   +9 more
wiley   +1 more source

Sub-aperture stitching interferometry using stereovision positioning technique

Optics Express, 2010
A stereovision-assisted sub-aperture stitching (SAS) approach is proposed to solve the positioning problem of tested optics. The principle of stitching is analyzed and the overlapping calculation problem is simplified. Then, a binocular stereovision system is integrated into a test configuration.
Pengfei, Zhang, Hong, Zhao, Xiang, Zhou, Jinjun, Li   +3 more
openaire   +2 more sources