全文获取类型
收费全文 | 529篇 |
免费 | 5篇 |
国内免费 | 49篇 |
专业分类
化学 | 178篇 |
晶体学 | 53篇 |
力学 | 33篇 |
数学 | 26篇 |
物理学 | 293篇 |
出版年
2024年 | 1篇 |
2023年 | 11篇 |
2022年 | 9篇 |
2021年 | 12篇 |
2020年 | 10篇 |
2019年 | 5篇 |
2018年 | 9篇 |
2017年 | 6篇 |
2016年 | 13篇 |
2015年 | 10篇 |
2014年 | 15篇 |
2013年 | 28篇 |
2012年 | 15篇 |
2011年 | 26篇 |
2010年 | 43篇 |
2009年 | 23篇 |
2008年 | 28篇 |
2007年 | 48篇 |
2006年 | 41篇 |
2005年 | 14篇 |
2004年 | 27篇 |
2003年 | 26篇 |
2002年 | 28篇 |
2001年 | 21篇 |
2000年 | 20篇 |
1999年 | 17篇 |
1998年 | 17篇 |
1997年 | 7篇 |
1996年 | 8篇 |
1995年 | 2篇 |
1994年 | 8篇 |
1993年 | 1篇 |
1992年 | 5篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 3篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1983年 | 2篇 |
1982年 | 5篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
排序方式: 共有583条查询结果,搜索用时 140 毫秒
61.
Michael Bowker 《Surface science》2006,600(24):5115-5116
62.
Properties of metastable long-range Ising models (LRIMs) are studied for deep quenches near the mean-field spinodal with Monte Carlo simulations using Glauber dynamics. The theory of spinodal-assisted nucleation is found to agree well with the data. Nucleating droplets are shown to have the same structure as large clusters in random long-range bond percolation. 相似文献
63.
In this introductory article, I review the theory of nucleation by thermal activation and by quantum tunneling. The effect of heterogeneous nucleation at surfaces is discussed and a brief survey of experimental techniques is given. To cite this article: H.J. Maris, C. R. Physique 7 (2006). 相似文献
64.
On (1 1 1) islands of platinum as well as iridium self-adsorbed on (1 1 1) planes, it is now established that there are interior barriers impeding the movement of adatoms from the inner region to the steps of the island. We have carried out Monte Carlo simulations of adatoms migrating on such islands to establish the effect of interior barriers on the rate at which adsorbed atoms nucleate to form dimers rather than incorporate into the steps of the island. It is found that interior barriers significantly increase the rate at which dimers are created by collisions of two adatoms, and that the presence of additional step-edge barriers further raises the rate of dimer nucleation. 相似文献
65.
L. Vernac M. Pinard V. Josse E. Giacobino 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2002,18(1):129-135
Using a quantum theory for an ensemble of two- or three-level atoms driven by electromagnetic fields in an optical cavity,
we show that the various spins associated with the atomic ensemble can be squeezed. Two kinds of squeezing are obtained: on
the one hand self-spin squeezing when the input fields are coherent ones and the atomic ensemble exhibits a large non-linearity;
on the other hand squeezing transfer when one of the incoming fields is squeezed.
Received 14 August 2001 and Received in final form 7 November 2001 相似文献
66.
Mikko Karttunen Nikolas Provatas Tapio Ala-Nissila Martin Grant 《Journal of statistical physics》1998,90(5-6):1401-1411
We study the nucleation and growth of flame fronts in slow combustion. This is modeled by a set of reaction-diffusion equations for the temperature field, coupled to a background of reactants and augmented by a term describing random temperature fluctuations for ignition. We establish connections between this model and the classical theories of nucleation and growth of droplets from a metastable phase. Our results are in good agreement with theoretical predictions. 相似文献
67.
Xiaofeng Ren 《Journal of Differential Equations》2005,209(2):266-301
We find nucleation solutions of N interfaces and K spikes to the one-dimensional FitzhHugh-Nagumo system. Each spike sits asymptotically in the middle between two interfaces. We use the Lyapunov-Schmidt reduction method, in which the problem is split into a finite-dimensional problem related to the translation of the K spikes and an infinite-dimensional complement problem. However the complement problem remains near degenerate due to the translation of the N interfaces. To overcome this difficulty we move the interfaces by a small distance and solve the complement problem with the help of a Newton iteration argument. 相似文献
68.
S.M. Barnett C. Fabre A. Maıtre 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2003,22(3):513-519
We compare two high sensitivity techniques which are used to measure very small displacements of physical objects by optical
techniques: the interferometric devices, measuring longitudinal phase shifts, and the devices used to monitor transverse displacement
of light beams. We detail the differences and the similarities for the quantum limits on the resolution of both systems. In
both cases squeezed light can be used to resolve beyond the standard quantum limit and number correlated states allow us to
reach the “Heisenberg” limit.
Received 12 September 2002 Published online 21 January 2003 相似文献
69.
We demonstrate a kinetically-driven patterning scheme to selectively position arrays of Ge or Si nanoparticles within lithographically defined HfO2 windows. The surface reactions enabling patterning are revealed through temperature programmed desorption experiments and selectivity of the deposition is verified by X-ray photoelectron spectroscopy and scanning electron microscopy. Patterning is possible by exploiting the different reactivity of Ge and Si on HfO2 and SiO2 surfaces and employing a sacrificial SiO2 mask on which adatoms etch the SiO2 surface and do not accumulate to form nanocrystals. 相似文献
70.
E. Cormier P. Lambropoulos 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》1998,2(1):15-20
We report on observable new features related to ionization of atoms by laser pulses of only few cycles and some intensity.
We show that for particular photo-electron energies, the angular distribution becomes asymmetric and that this asymmetry is
related to the initial phase of the field.
Received: 4 November 1997/Revised: 21 January 1998/Accepted: 23 February 1998 相似文献