Results 101 to 110 of about 186,264 (366)

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

A spectre is haunting the cosmos: Quantum stability of massive gravity with ghosts [PDF]

, 2016
Many theories of modified gravity with higher order derivatives are usually ignored because of serious problems that appear due to an additional ghost degree of freedom. Most dangerously, it causes an immediate decay of the vacuum.
Akrami, Yashar, Amendola, Luca, Könnig, Frank, Nersisyan, Henrik, Zumalacárregui, Miguel   +4 more
core   +1 more source

Metal–Organic Frameworks for Gaseous Pollutant Management: From Capture to Neutralization and Reutilization

Advanced Functional Materials, EarlyView.
This review maps how MOFs can manage hazardous gases by combining adsorption, neutralization, and reutilization, enabling sustainable air‐pollution control. Covering chemical warfare agent simulants, SO2, NOx, NH3, H2S, and volatile organic compounds, it highlights structure‐guided strategies that boost selectivity, water tolerance, and cycling ...
Yuanmeng Tian, Zeyu Tao, Kaikai Ma, Xiaoliang Wang, Bo Yu, Yiu Wan Yip, Zhijie Chen, Jin Shang, Bin Fei   +8 more
wiley   +1 more source

Axiomatic formulations of modified gravity theories with nonlinear dispersion relations and Finsler–Lagrange–Hamilton geometry

The European Physical Journal C, 2018
We develop an axiomatic geometric approach and provide an unconventional review of modified/nonlinear gravity theories, MGTs, with modified dispersion relations, MDRs, encoding Lorentz invariance violations, LIVs, classical and quantum random effects ...
Laurenţiu Bubuianu, S. Vacaru
semanticscholar   +1 more source

Radiation of scalar modes and the classical double copy

, 2018
The double copy procedure relates gauge and gravity theories through color-kinematics replacements and holds for both scattering amplitudes and in classical contexts. Moreover, it has been shown that there is a web of theories whose scattering amplitudes
Carrillo-Gonzalez, Mariana, Penco, Riccardo, Trodden, Mark   +2 more
core   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

Classical evolution and quantum generation in generalized gravity theories including string corrections and tachyons : Unified analyses [PDF]

, 2004
We present cosmological perturbation theory based on generalized gravity theories including string theory correction terms and a tachyonic complication.
J. Hwang, H. Noh
semanticscholar   +1 more source

Gravity duals for logarithmic conformal field theories

, 2010
Logarithmic conformal field theories with vanishing central charge describe systems with quenched disorder, percolation or dilute self-avoiding polymers. In these theories the energy momentum tensor acquires a logarithmic partner. In this talk we address
Afshar H R, Andrade T, Anninos D, Anninos D, Anninos D, Becker M, Bernard D, Blagojevic M, Blagojevic M, Cardy J L, Carlip S, Carlip S, Carlip S, Chow D D K, Compere G, Compere G, Daniel Grumiller, de Haro S, Deser S, Deser S, Deser S, Di Francesco P, Duncan J F, Ertl S, Fujita M, Gaberdiel M R, Gaiotto D, Gibbons G W, Giribet G, Grumiller D, Grumiller D, Grumiller D, Grumiller D, Gurarie V, Hellerman S, Hotta K, Hotta K, Kogan I I, Kraus P, Lee H W, Li W, Li W, Liu Y, Maloney A, Maloney A, Manschot J, Manschot J, Miskovic O, Myers R C, Myung Y S, Myung Y S, Nam S, Niklas Johansson, Oh J J, Park M I, Sachs I, Sachs I, Sezgin E, Skenderis K, Skenderis K, Stevens K A, Strominger A, Vasquez Y, Witten E, Yin X, Yin X, Zee A   +66 more
core   +1 more source

Projectable Horava-Lifshitz gravity in a nutshell [PDF]

, 2010
Approximately one year ago Horava proposed a power-counting renormalizable theory of gravity which abandons local Lorentz invariance. The proposal has been received with growing interest and resulted in various different versions of Horava-Lifshitz ...
Antonios Papazoglou, Anzhong Wang, Blas D, Blas D, Blas D, Christos Charmousis, Clifford M Will, Damiano Anselmi, David Mattingly, Kazuya Koyama, Marc Henneaux, Matt Visser, Matt Visser, Miao Li, Petr Hořava, Roberto Iengo, Silke Weinfurtner, Thomas P Sotiriou, Thomas P Sotiriou, Visser M, Xian Gao, Zheng-Cheng Gu   +21 more
core   +1 more source

Highly Tunable and Cell‐Remodelable Thiol‐ene Alginate‐Peptide Crosslinked Hydrogels to Recreate Cellular and Organoid Microenvironments for Biofabrication

Advanced Healthcare Materials, EarlyView.
Norbornene‐functionalized alginate is crosslinked with a di‐thiolated peptide sequence cleavable by cell‐secreted matrix metalloproteinases and decorated with cell‐adhesion peptides upon exposure to UV. Thyroid follicles, endometrial and intestinal organoids are encapsulated in a gentle manner with high cell viability and correct phenotype ...
Julia Fernández‐Pérez, Adrián Seijas‐Gamardo, Antonio J. Feliciano, Panagiota Kakni, Anna M. Kip, Paul Wieringa, Stefan Giselbrecht, Matthew B. Baker, Lorenzo Moroni   +8 more
wiley   +1 more source