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| 1 | Highly stretchable,soft and sticky PDMS elastomer by solvothermal polymerization process显示文摘Siloxane rubber shows attractive properties of high stability,elasticity and transparency.Besides,the regulation of its properties renders it widely used in many application fields.However,most of the reported performance improvement methods of siloxane rubber focus on the change of chemical composition of siloxane rubber,including the design of molecular chain and the introduction of other compounds,etc.Such a strategy is still faced with many limitations in practical application.In this work,on the premise of not changing the chemical composition of siloxane rubber,we propose a facile solvothermal polymerization process to change the structure of cross-linking networks,so as to obtain the siloxane rubber with controllable mechanical properties.Compared to the normal curing method,we realized polydimethylsiloxane elastomer(PDMS)with maximum elongation of more than 3,000%(>10 times of normally cured one)and tensile modulus lower than 0.15 MPa(<1/10 of normally cured one).In addition to superior stretchability,it gains extra high softness,stickiness and sensitive response to organic solvents.Based on our solvothermal cured PDMS,its applications in oil collection and organic solvent sensor have been demonstrated.It is expected that this method can be readily utilized widely and shows great application potentials. | Jin Huang Yuchun Cai Chengyuan Xue Jin Ge Haoyu Zhao Shu-Hong Yu | 2021 | Nano Research2021，14，10： | 1 |
| 2 | On the Identification of N-rich Metal-poor Field Stars with Future Chinese Space Station Telescope显示文摘During the long term evolution of globular clusters(GCs), some member stars are lost to the field. The recently found nitrogen-rich(N-rich) metal-poor field stars are promising candidates of these GC escapees, since N enhancement is the fingerprint of chemically enhanced populations in GCs. In this work, we discuss the possibility of identifying N-rich metal-poor field stars with the upcoming Chinese Space Station Telescope(CSST). We focus on the main survey camera with NUV, u, g, r, i, z, y filters and slitless spectrograph with a resolution about 200.The combination of UV sensitive equipment and prominent N-related molecular lines in the UV band bodes well for the identification: the color–color diagram of(u-g) versus(g-r) is capable of separating N-rich field stars from normal halo stars, if metallicity can be estimated without using the information on u-band photometry.Besides, the synthetic spectra show that a signal-to-noise ratio of 10 is sufficient to identify N-rich field stars. In the near future, a large sample of N-rich field stars found by CSST, combined with state-of-the-art N-body simulations will be crucial to deciphering GC-Galaxy co-evolution. | Jiajun Zhang Baitian Tang Jiang Chang Xiangxiang Xue JoséGFernández-Trincado Chengyuan Li Long Wang Hao Tian Yang Huang | 2024 | Research in Astronomy and Astrophysics2024，24，1： | 0 |
| 3 | Post-Newtonian parameter γ in generalized non-local gravity显示文摘We investigate the post-Newtonian parameter γ and derive its formalism in generalized non-local(GNL) gravity, which is the modified theory of general relativity(GR) obtained by adding a term m^(2n-2)R□(-n)R to the Einstein-Hilbert action. Concretely,based on parametrizing the generalized non-local action in which gravity is described by a series of dynamical scalar fields φ~i in addition to the metric tensor g_(μν), the post-Newtonian limit is computed, and the effective gravitational constant as well as the post-Newtonian parameters are directly obtained from the generalized non-local gravity. Moreover, by discussing the values of the parametrized post-Newtonian parameters γ, we can compare our expressions and results with those in Hohmann and Jrv et al.(2016), as well as current observational constraints on the values of γ in Will(2006). Hence, we draw restrictions on the nonminimal coupling terms F around their background values. | Xue Zhang YaBo Wu WeiQiang Yang ChengYuan Zhang BoHai Chen Nan Zhang | 2017 | Science China(Physics,Mechanics & Astronomy)2017，60，10： | 0 |
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