Results 91 to 100 of about 41,477,537 (409)

Scaling of the supercooled dynamics and its relation to the pressure dependences of the dynamic crossover and the fragility of glass-formers [PDF]

, 2004
Master curves of the relaxation time, tau, or viscosity, eta, versus T^-1V^-x, where T is temperature, V the specific volume, and x a material constant, are used to deduce the effect of pressure on the dynamic crossover and the fragility. The crossover is determined from the change in slope of derivative plots of the relaxation times or viscosities. We
arxiv   +1 more source

Infrared study of spin crossover Fe-picolylamine complex

, 2003
Infrared (IR) absorption spectroscopy has been used to probe the evolution of microscopic vibrational states upon the temperature- and photo-induced spin crossovers in [Fe(2-picolylamine)3]Cl2EtOH (Fe-pic).
Chernyshov D., Gütlich P., Hauser A., Huby N., Kimura H., Kimura S., Mikami M., Ogawa Y., Oyanagi H., Pouchert C. J., Pretsch E., Romstedt H., Socrates G., Tanaka K., Tayagaki T., Tayagaki T., Tayagaki T., Tayagaki T.   +17 more
core   +1 more source

Enhanced Electromechanical Response in 1D Hybrid Perovskites: Coexistence of Normal and Relaxor Ferroelectric Phases

Advanced Functional Materials, EarlyView.
The dynamic polarization reversal of coexisting normal and relaxor ferroelectrics in 1D TMAPbI₃ (tetramethylammonium, TMA) is deciphered through combined experimental and theoretical approaches. By bridging atomic‐scale motion, macroscopic polarization switching, and depolarization effects, a universal methodology is established to engineer next ...
Chen Xue, Masaru Fujibayashi, Hengming Huang, Chisato Kato, Katsuya Ichihashi, Jun Manabe, Sadafumi Nishihara, Xiao‐Ming Ren, Takayoshi Nakamura   +8 more
wiley   +1 more source

Nontrivial critical crossover between directed percolation models: Effect of infinitely many absorbing states

, 2007
At non-equilibrium phase transitions into absorbing (trapped) states, it is well known that the directed percolation (DP) critical scaling is shared by two classes of models with a single (S) absorbing state and with infinitely many (IM) absorbing states.
Hyunggyu Park, I. D. Lawrie, P. Grassberger, Su-Chan Park   +3 more
core   +1 more source

Ternary Transistors With Reconfigurable Polarities

Advanced Functional Materials, EarlyView.
Polarity‐reconfigurable ternary transistors are demonstrated using black phosphorus homojunction with asymmetric contacts and split‐gate structures. Suppression of majority carrier injection, while Fowler–Nordheim tunneling of low‐density minority carriers persists, enables a well‐defined intermediate state with improved on/off ratios.
Dongju Yeom, Yeonghyeon Ko, Youngkyu Ko, Heungsoon Im, Jungi Song, Yongwook Seok, Hanbyeol Jang, Jaeha Hwang, Seokhun Jin, Kenji Watanabe, Takashi Taniguchi, Kayoung Lee   +11 more
wiley   +1 more source

A Novel Crossover Operator for Genetic Algorithms: Ring Crossover [PDF]

arXiv, 2011
The genetic algorithm (GA) is an optimization and search technique based on the principles of genetics and natural selection. A GA allows a population composed of many individuals to evolve under specified selection rules to a state that maximizes the "fitness" function. In that process, crossover operator plays an important role. To comprehend the GAs
arxiv  

On the Fermi Liquid to Polaron Crossover I: General Results [PDF]

, 1996
We use analytic techniques and the dynamical mean field method to study the crossover from fermi liquid to polaron behavior in models of electrons interacting with dispersionless classical phonons.
arxiv   +1 more source

Thermodynamics of doped Kondo insulator in one dimension: Finite Temperature DMRG Study

, 1998
The finite-temperature density-matrix renormalization-group method is applied to the one-dimensional Kondo lattice model near half filling to study its thermodynamics. The spin and charge susceptibilities and entropy are calculated down to T=0.03t.
Aeppli G., Betsuyaku H., Bursill R. J., Fujimoto S., Fujimoto S., Fye R. M., Moukouri S., Mutou T., Nishino T., Schulz H. J., Shibata N., Shibata N., Shibata N., Shibata N., Shibata N., Shibata N., Takahashi M., Tsunetsugu H., Tsunetsugu H., Tsvelik A. M., Ueda K., Usuki T., Wang X., White S. R., Yamanaka M., Yu C. C.   +25 more
core   +1 more source

Controlled Release of Human Dental Pulp Stem Cell‐Derived Exosomes from Hydrogels Attenuates Temporomandibular Joint Osteoarthritis

Advanced Healthcare Materials, EarlyView.
Exosomes can reduce tissue damage in temporomandibular joint osteoarthritis (TMJOA), but rapid clearance limits their efficacy. This study encapsulates exosomes in hyaluronic acid hydrogels for controlled release. In a rat model, hydrogel‐encapsulated exosomes outperform free exosomes in preserving bone integrity and reducing tissue destruction ...
Victor Diez‐Guardia, Yajing Tian, Yunzhe Guo, Jiaying Li, Shengjie Cui, Cécile A. Dreiss, Eileen Gentleman, Xuedong Wang   +7 more
wiley   +1 more source

Towards Analyzing Crossover Operators in Evolutionary Search via General Markov Chain Switching Theorem [PDF]

arXiv, 2011
Evolutionary algorithms (EAs), simulating the evolution process of natural species, are used to solve optimization problems. Crossover (also called recombination), originated from simulating the chromosome exchange phenomena in zoogamy reproduction, is widely employed in EAs to generate offspring solutions, of which the effectiveness has been examined ...
arxiv