Results 71 to 80 of about 9,355,325 (300)

In Situ Two‐Dimensional Residual Stress Characterization of Thin Films

Advanced Materials Technologies, EarlyView.
An integrated in situ curvature metrology platform combining speckle‐based curvature optical metrology (SCOM) with multi‐beam optical sensors (MOS) enables spatially resolved two‐dimensional curvature mapping of thick sputtered coatings. The SCOM technique provides excellent agreement with MOS while providing an extended measurable curvature range ...
Wai Jue Tan, Wadwan Singhapong, Arindam Majhi, Chris Bowen, Alexander J.G. Lunt, Hongchang Wang, Kawal Sawhney   +6 more
wiley   +1 more source

Spherical aberration correction suitable for a wavefront controller

Optics Express, 2009
We propose a simple method to correct a large amount of spherical aberration caused by a refractive index mismatch. The method is based on inverse ray tracing and can generate correction phase patterns whose peak-to-valley values are minimized. We also demonstrated spherical aberration correction in a transparent acrylic block using a liquid-crystal-on-
Haruyasu, Itoh, Naoya, Matsumoto, Takashi, Inoue   +2 more
openaire   +2 more sources

Modelling delta-notch perturbations during zebrafish somitogenesis [PDF]

, 2013
The discovery over the last 15 years of molecular clocks and gradients in the pre-somitic mesoderm of numerous vertebrate species has added significant weight to Cooke and Zeeman's ‘clock and wavefront’ model of somitogenesis, in which a travelling ...
Baker, R. E., Maini, P. K., Murray, PJ, Baker, RE, Baker, Ruth E., Murray, Philip J., Maini, PK, Murray, P J, Maini, Philip K.   +8 more
core   +1 more source

Programmable Pneumatic Actuator System for a Bioinspired Artificial Colon

Advanced Materials Technologies, EarlyView.
A modular soft robotic colon simulator driven by programmable pneumatic actuation is developed to mimic physiological and pathological‐like motility patterns of the large intestine. Finite element–guided design and distributed control enable anatomically realistic deformation for peristalsis, segmentation, and mass movements, supporting capsule ...
Andrew Bickerdike, Bo Tian, Xizheng Fang, Zepeng Wang, Yang Liu, Lucy Adams, Shyam Prasad   +6 more
wiley   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

Mesoscopic transport and control of light through disordered nanowire mats

, 2014
In this thesis the transport of light through disordered, densely packed semiconductor nanowire mats is studied. It is found that the extremely high photonic strength of these samples leads to corrections to the traditional diffusion picture of light ...
Strudley, Tom
core   +1 more source

Broadband High-Efficiency Co-Polarized Wavefront Manipulation Based on Multi-Layered Metasurface for Terahertz Wave

IEEE Access
Metasurfaces can achieve multifunctional wavefront control, but most co-polarized metasurfaces can only achieve a 360° phase coverage at specific frequency points. In this paper, we propose a metasurface with efficient co-polarized Terahertz (THz)
Su Zong, Jiajun Liang
doaj   +1 more source

Wavefront shaping of a Bessel light field enhances light sheet microscopy with scattered light [PDF]

, 2014
The project was supported by the UK Engineering and Physical Sciences Research Council, RS MacDonald Charitable Trust, SULSA, and the St. Andrews 600th anniversary BRAINS appeal. K. D.
Vettenburg, T.; id_orcid, J. Nylk, K. Dholakia, Nylk, J., C. Mitchell, Vettenburg, T., Gunn-Moore, F. J., T. Vettenburg, Mitchell, C., Dholakia, K., Nylk, J.; id_orcid, F. J. Gunn-Moore   +11 more
core   +1 more source

Unlocking Terahertz Steganography: Authentication of Hidden Images in Flexible Media

Advanced Materials Technologies, EarlyView.
Hidden information in multilayered devices, such as steganographic portraits, is detected and authenticated using reflection‐mode terahertz time‐domain imaging. Image reconstruction relies on a dedicated figure‐of‐merit obtained by integrating the signal intensity over the time‐window associated with the reflection from the metallic mirror backing the ...
Tiziana Ritacco, Francesca Vittorioso, Dimitrios C. Zografopoulos, Romeo Beccherelli, Walter Fuscaldo   +4 more
wiley   +1 more source

Wavefront control with a multi-actuator adaptive Lens in imaging applications

, 2017
The use of adaptive lenses instead of deformable mirrors can simplify the implementation of an adaptive optics system. The recently introduced Multi-actuator Adaptive Lens (MAL) can be used in closed loop with a wavefront sensor to correct for time ...
Muradore, R. (author), Jian, Y (author), Bonora, S. (author), Verstraete, H.R.G.W. (author), Quintavalla, M. (author), Mocci, J. (author), Trestino, C. (author), Sarunic, M.V. (author), Cua, M. (author), Wahl, D. (author), Zawadzki, R.J. (author), Pozzi, P. (author), Lee, S. (author), Verhaegen, M.H.G. (author)   +13 more
core   +3 more sources