Results 71 to 80 of about 504,859 (272)

Ultra‐Fine 3D Bioprinting of Dynamic Hyaluronic Acid Hydrogel for in Vitro Modeling

Advanced Materials, EarlyView.
3D bioprinting merges tissue engineering and additive manufacturing to create biological structures. A bioink is developed by modifying hyaluronic acid, a natural extracellular matrix polymer, with cysteine. Potassium iodide is later added to tune gelation kinetics, enabling fine printing with a 32G needle.
Shima Tavakoli, Aybike Kocatürkmen, Oommen P. Oommen, Oommen P. Varghese   +3 more
wiley   +1 more source

Phase-stepping algorithms for synchronous demodulation of nonlinear phase-shifted fringes [PDF]

, 2018
Standard phase-stepping algorithms (PSAs) estimate the measuring phase of linear carrier temporal-fringes with respect to a linear-reference. Linear-carrier fringes are normally obtained using feedback, closed-loop, optical phase-shifting devices. On the other hand, open-loop, phase-shifting devices, usually give fringe patterns with nonlinear phase ...
arxiv   +1 more source

MOEMS deformable mirror testing in cryo for future optical instrumentation

, 2017
MOEMS Deformable Mirrors (DM) are key components for next generation instruments with innovative adaptive optics systems, in existing telescopes and in the future ELTs.
Barette, Rudy, Grassi, Emmanuel, Helmbrecht, Michael, Lanzoni, Patrick, Marchis, Franck, Teichman, Alex, Vors, Patrick, Zamkotsian, Frederic   +7 more
core   +1 more source

4D Bioprinted Self‐Folding Scaffolds Enhance Cartilage Formation in the Engineering of Trachea

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
A bilayer self‐folding scaffold, triggerable by humidity, is fabricated via 4D bioprinting for trachea engineering. An analytical model is derived to predict its radius of curvature, enabling its scalability. Cartilage progenitor cells seeded on the scaffold perceive scaffold final curvature and react to it, by enhancing the upregulation of pro ...
Irene Chiesa, Alessio Esposito, Giovanni Vozzi, Riccardo Gottardi, Carmelo De Maria   +4 more
wiley   +1 more source

Nulling interferometry: performance comparison between Antarctica and other ground-based sites [PDF]

, 2007
Detecting the presence of circumstellar dust around nearby solar-type main sequence stars is an important pre-requisite for the design of future life-finding space missions such as ESA's Darwin or NASA's Terrestrial Planet Finder (TPF).
Absil, Absil, Agabi, Aristidi, Aristidi, Beichman, Bussmann, Candidi, Chamberlain, Chamberlin, Colavita, Conan, Fridlund, Gondoin, Kaltenegger, Kasting, Kelsall, Lawrence, Lawrence, Lay, M. Barillot, M. R. Swain, Marks, Marks, Mennesson, O. Absil, Racine, Serabyn, Swain, Swain, Travouillon, V. Coudé du Foresto   +31 more
core   +5 more sources

Piston sensing of sparse aperture systems with a single broadband image via deep learning.

Optics Express, 2019
The pistons of sparse aperture systems need to be controlled within a fraction of a wavelength for the system's optimal imaging performance. In this paper, we demonstrate that deep learning is capable of performing piston sensing with a single wide-band ...
Xiafei Ma, Zongliang Xie, Haotong Ma, Yangjie Xu, G. Ren, Y. Liu   +5 more
semanticscholar   +1 more source

The Role of Silicon Technology in Organ‐On‐Chip: Current Status and Future Perspective

Advanced Materials Technologies, Volume 10, Issue 9, May 6, 2025.
This review explores the potential of silicon micro‐nanofabrication technologies in advancing organ‐on‐chip systems. The integration of actuation and sensing modalities, highlight emerging technologies is discussed for combining silicon‐based and polymer‐based components, and emphasize the need for robust, high‐throughput, and customizable organ‐on ...
Frøydis Sved Skottvoll, Enrique Escobedo‐Cousin, Michal Marek Mielnik   +2 more
wiley   +1 more source

Triboelectrification During Water Intrusion–Extrusion into‐from Hydrophobic Nanopores

Advanced Materials Technologies, Volume 10, Issue 7, April 4, 2025.
An innovative class of tribogenerator (IE‐TENG) is proposed, which is based on cyclic water intrusion–extrusion into‐from hydrophobic nanopores. This IE‐TENG possesses surface area orders of magnitude higher than flat surfaces and achieves remarkable electricity generation.
Luis Bartolomé, Josh David Littlefair, Eder Amayuelas, Liam J. W. Johnson, Andrea Le Donne, Andris Šutka, Simone Meloni, Yaroslav Grosu   +7 more
wiley   +1 more source

Sparse aperture differential piston measurements using the pyramid wave-front sensor [PDF]

, 2016
In this paper we report on the laboratory experiment we settled in the Shanghai Astronomical Observatory (SHAO) to investigate the pyramid wavefront sensor (WFS) ability to measure the differential piston on a sparse aperture. The ultimate goal is to verify the ability of the pyramid WFS work in closed loop to perform the phasing of the primary mirrors
arxiv   +1 more source

4D Printed Self‐Deploying Bio‐Based Scaffolds for the Regeneration of Endoluminal Tissue

Advanced Materials Technologies, EarlyView.
A bilayer self‐deploying tubular C‐shaped scaffold, made of natural polymers and triggerable by humidity, is fabricated via 4D printing for the regeneration of gastro‐intestinal tissue. The choice of the materials and their spatial arrangement is guided by physical and biological evaluation, whereas the geometry of the structure is optimized through ...
Irene Chiesa, Maria Rachele Ceccarini, Andrea Guerra, Giuseppe Raffaele, Leonardo Beati, Rocco Malaspina, Martina Alunni Cardinali, Paola Sassi, Luca Valentini, Carmelo De Maria   +9 more
wiley   +1 more source