介绍了IP/TV技术的基本组成和工作原理,阐述了IP/TV技术的主要功能和技术特点。由于IP/TV技术采用了IP M u lticast多播协议,支持标准的实时传输和组内广播协议,能提供实时广播、定时广播、视频点播等多种通信模式,可广泛应用于远程教...介绍了IP/TV技术的基本组成和工作原理,阐述了IP/TV技术的主要功能和技术特点。由于IP/TV技术采用了IP M u lticast多播协议,支持标准的实时传输和组内广播协议,能提供实时广播、定时广播、视频点播等多种通信模式,可广泛应用于远程教育教学系统。最后给出了IP/TV技术在远程教育教学中的具体实现方法。。展开更多
We simulate the self-assembly of active colloidal molecules from binary mixtures of spherical particles using a Brownian dynamics algorithm.These particles interact via phoretic interactions,which are determined by tw...We simulate the self-assembly of active colloidal molecules from binary mixtures of spherical particles using a Brownian dynamics algorithm.These particles interact via phoretic interactions,which are determined by two independently tunable parameters,surface activity and surface mobility.In systems composed of equal-size particles,we observe the formation of colloidal molecules with well-defined coordination numbers and spatial arrangement,which also display distinct dynamic functions,such as resting,translating,and rotating.By changing the size ratio to 2:1 between the two species,we further observe the formation of colloidal molecules with new structures arising from breaking the size symmetry.By tuning the mutual interactions between the smaller species via their surface mobility,we are able to control their spacing as well as the coordination number of the colloidal molecules.This study highlights the importance of tuning surface parameters and size asymmetry in controlling the structure and the active dynamics of colloidal molecules.展开更多
文摘介绍了IP/TV技术的基本组成和工作原理,阐述了IP/TV技术的主要功能和技术特点。由于IP/TV技术采用了IP M u lticast多播协议,支持标准的实时传输和组内广播协议,能提供实时广播、定时广播、视频点播等多种通信模式,可广泛应用于远程教育教学系统。最后给出了IP/TV技术在远程教育教学中的具体实现方法。。
基金the Innovation Program of Guangdong Provincial Department of Education,China(Grant No.2019KTSCX148)the Science and Technology Innovation Commission of Shenzhen(Grant No.JCYJ20170818141727254).
文摘We simulate the self-assembly of active colloidal molecules from binary mixtures of spherical particles using a Brownian dynamics algorithm.These particles interact via phoretic interactions,which are determined by two independently tunable parameters,surface activity and surface mobility.In systems composed of equal-size particles,we observe the formation of colloidal molecules with well-defined coordination numbers and spatial arrangement,which also display distinct dynamic functions,such as resting,translating,and rotating.By changing the size ratio to 2:1 between the two species,we further observe the formation of colloidal molecules with new structures arising from breaking the size symmetry.By tuning the mutual interactions between the smaller species via their surface mobility,we are able to control their spacing as well as the coordination number of the colloidal molecules.This study highlights the importance of tuning surface parameters and size asymmetry in controlling the structure and the active dynamics of colloidal molecules.
