Results 61 to 70 of about 924,857 (297)

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Dilaton Gravity in $2+\epsilon$ Dimensions

, 1994
Quantum theory of dilaton gravity is studied in $2+\epsilon$ dimensions. Divergences are computed and renormalized at one-loop order. The mixing between the Liouville field and the dilaton field eliminates $1/\epsilon$ singularity in the Liouville ...
't Hooft, Abbott, Aida, Alvarez-Gaumé, Banks, Bardeen, Bilal, Birnir, Braaten, Brézin, Callan, Cangemi, Chamseddine, Chamseddine, Chamseddine, Chamseddine, Christensen, De Alwis, De Alwis, De Witt, De Witt, Fradkin, Friedan, Friedan, Gastmans, Giddings, Giddings, Hamada, Hamada, Hawking, Isler, Jackiw, Kawai, Kawai, Kawai, Kojima, Kugo, Matsumura, Mikovic, Nojiri, Norisuke Sakai, Raiten, Russo, Russo, Russo, Shin-ichi Kojima, Strominger, Susskind, Teitelboim, Tseytlin, Tseytlin, Weinberg, Yoshiaki Tanii   +52 more
core   +1 more source

AdS_3 Gravity and Conformal Field Theories [PDF]

, 1998
We present a detailed analysis of $AdS_3$ gravity, the BTZ black hole and the associated conformal field theories (CFTs). In particular we focus on the non-extreme six-dimensional string solution with background metric $AdS_3 \times S^3$ near the horizon.
Achucarro, Aharony, Alekseev, Banados, Banados, Behrndt, Behrndt, Behrndt, Behrndt, Bergshoeff, Brown, Callan, Callan, Cangemi, Cardoso, Carlip, Carlip, Coussaert, Coussaert, Cvetic, de Wit, de Wit, Dijkgraaf, Dijkgraaf, Dorn, Douglas, Duff, Gaida, Garfinkle, Goulian, Harvey, Hawking, Hawking, Horne, Horowitz, Ilka Brunner, Ingo Gaida, Kachru, Kaloper, Klaus Behrndt, Klemm, Lowe, Maldacena, Maldacena, Moore, Nicolai, Polyakov, Sabra, Sabra, Sfetsos, Tseytlin, Tseytlin, Witten, Witten, Witten, Witten   +55 more
core   +2 more sources

Charge‐Induced Morphing Gels for Bioinspired Actuation

Advanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu, Saba Firouznia, Charl F. J. Faul, Majid Taghavi, Jonathan Rossiter   +4 more
wiley   +1 more source

Gravity field modelling and gravimetry

Geodesy and Cartography, 2015
The summary of research activities concerning gravity field modelling and gravimetric works performed in Poland in the period of 2011-2014 is presented.
Krynski Jan
doaj   +1 more source

A Gravity-Triggered Liquid Metal Patch Antenna with Reconfigurable Frequency

Micromachines, 2021
In this paper, a gravity-triggered liquid metal microstrip patch antenna with reconfigurable frequency is proposed with experimental verification. In this work, the substrate of the antenna is quickly obtained through three-dimensional (3D) printing ...
Peng Qin, Guan-Long Huang, Jia-Jun Liang, Qian-Yu Wang, Jun-Heng Fu, Xi-Yu Zhu, Tian-Ying Liu, Lin Gui, Jing Liu, Zhong-Shan Deng   +9 more
doaj   +1 more source

Thick braneworlds generated by a non-minimally coupled scalar field and a Gauss-Bonnet term: conditions for localization of gravity

, 2012
We consider warped five-dimensional thick braneworlds with four-dimensional Poincar\'e invariance originated from bulk scalar matter non-minimally coupled to gravity plus a Gauss-Bonnet term.
Herrera-Aguilar, Alfredo, Malagon-Morejon, Dagoberto, Mora-Luna, Refugio Rigel, Quiros, Israel   +3 more
core   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

Quantum Gravity: Has Spacetime Quantum Properties? [PDF]

, 2009
The incompatibility between GR and QM is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - QM gives a universally valid basis for the description of all natural systems, then ...
Hedrich, Reiner
core   +1 more source

A New Property of the Electromagnetic/Yang-Mills-Conformal Gravity System in Spherical Symmetry

, 2019
We find a new property in $W^2$-conformal gravity in spherical symmetry. We demonstrate that the charge of the electromagnetic field varies with respect to the partial scaling symmetry (conformal transformations in subspaces of a spacetime) in the ...
Zhang, Hongsheng
core   +1 more source