RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 무료
      • 기관 내 무료
      • 유료
      • Directed motion of elongated active polymers

        Wan, Mew-Bing,Jho, YongSeok The Royal Society of Chemistry 2013 Soft matter Vol.9 No.12

        <P>Previous work shows that a net directed motion arises from a system of individual particles undergoing run-and-tumble dynamics in the presence of an array of asymmetric barriers. Here, we show that when the individual particle is replaced by a chain of particles linked to each other by spring forces (polymer), the rectification is enhanced. It is found that the rectification increases when the number of particles in each polymer, as well as its length, increases. In addition, the rectification increases when the size of the opening between neighboring funnel tips, <I>l</I><SUB>o</SUB>, decreases. Interestingly, if the conformal entropic difference exceeds the thermal diffusion, a net directed motion is observed even when the run-and-tumble dynamics approaches Brownian motion. Also, when the inelastic collisions between the particles and the barriers are replaced by elastic collisions, a <I>reversed</I> rectification is observed.</P> <P>Graphic Abstract</P><P>Previous work shows that a net directed motion arises from a system of individual particles undergoing run-and-tumble dynamics in the presence of an array of asymmetric barriers. Here, we show that when the individual particle is replaced by a chain of particles linked to each other by spring forces (polymer) the rectification is enhanced. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c3sm27851d'> </P>

      • Effects of magnetic field topology in black hole-neutron star mergers: Long-term simulations

        American Physical Society 2017 Physical Review D Vol.95 No.10

        <P>We report long-term simulations of black hole-neutron star binary mergers where the neutron star possesses an asymmetric magnetic field dipole. Focusing on the scenario where the neutron star is tidally disrupted by the black hole, we track the evolution of the binary up to approximate to 100 ms after the merger. We uncover more than one episode of thermally driven winds being launched along a funnel wall in all these cases beginning from approximate to 25 ms after the merger. On the other hand, we are unable to conclude presently whether the amount of ejected mass increases with the degree of asymmetry. A large-scale magnetic field configuration in the poloidal direction is formed along the funnel wall accompanied by the generation of a large Poynting flux. The magnetic field in the accretion disk around the black hole remnant is amplified by both magnetic winding and the nonaxisymmetric magnetorotational instability (MRI). The MRI growth is estimated to be in the ideal magnetohydrodynamics (MHD) regime and thus would be free from significant effects induced by potential neutrino radiation. However, the asymmetry in the magnetic field leads to increased turbulence, which causes the vertical magnetic field in the accretion disk to grow largely in a nonlinear manner.</P>

      • KCI등재

        Explicit Flavor Symmetry Breaking and Holographic Compact Stars

        김영만,신익재,이창환,Mew-Bing Wan 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.4

        We study the effects of flavor symmetry breaking on holographic dense matter and compact starsin the D4/D6 model. To this end, two light flavors and one intermediate mass flavor are considered. For two light quarks, we investigate how the strong isospin violation affects the propertiesof holographic dense matter and compact stars. We observe that quark-antiquark condensates areflavor dependent and show interesting behavior near the transition from dense matter with onlyone flavor to matter with two flavors. An intermediate mass quark is introduced to investigate therole of the third flavor. The mass-radius relations of holographic compact stars with three flavorsshow that the mass-radius curve changes drastically at a transition density from which the thirdflavor begins to appear in the matter.

      • SCISCIESCOPUSKCI등재

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼