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| 1 | The security analyses of rosettanet in grid显示文摘 | J.Liu R.Sun W.Kou X.Sun | | 0，，： | 1 |
| 2 | Precision spectroscopy of atomic helium显示文摘Helium is a prototype three-body system and has long been a model system for developing quantum mechanics theory and computational methods.The fine-structure splitting in the 23P state of helium is considered to be the most suitable for determining the fine-structure constant a in atoms.After more than 50 years of efforts by many theorists and experimentalists,we are now working toward a determination of a with an accuracy of a few parts per billion,which can be compared to the results obtained by entirely different m ethods to verify the self-consistency of quantum electrodynamics.Moreover,the precision spectroscopy of helium allows determination of the nuclear charge radius,and it is expected to help resolve the‘proton radius puzzle’.In this review,we introduce the latest developments in the precision spectroscopy of the helium atom,especially the discrepancies among theoretical and experimental results,and give an outlook on future progress. | Yu R.Sun Shui-Ming Hu | 2020 | National Science Review2020，7，12： | 0 |
| 3 | Dielectric properties of amorphous Bi-Ti-O thin films显示文摘We report the unexpectedly excellent dielectric properties of amorphous thin films with compositions in the Bi-Ti-O system.Films were deposited by RF magnetron reactive co-sputtering.In the composition range of 0.5 | R.Sun W.Xu R.B.van Dover | 2021 | Journal of Advanced Dielectrics2021，11，2： | 0 |
| 4 | Complex Velocity Potential for an Ellipse and a Circle in Translation and Rotation显示文摘This paper investigates the analytical solutions of two- dimensional Neumann- type external boundary- value problem for an ellipse and a circle in complex analysis treatment.The transformation of harmonics between two planes is expanded in Laurent series.The circle theorem is extended so as to suitto the system of the ellipse and the circle. By means of Basset’s process,the harmonic expressions of the system are found in the form of recurrence formulae which are suitable for numerical computations.The complex velocity potential of the system in translation and rotation is represented by the summation of the harmonic expressions. | R.SUN &A.T.CHWANG (Department of Mechanical Engineering,The University of Hong Kong,H.K.) | 1997 | Communications in Nonlinear Science and Numerical Simulation1997，2，4： | 0 |
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