Physics
visual01

공지사항

  • 메인
  • >
  • 소식
  • >
  • 공지사항

나노과학기술대학원에서는 김용운 박사 (Korea Institute for Advanced Study) 세미나를 개최합니다.

 

 * 일시/장소  : 4월 12일(월) 오전 11시~ , 자연과학동(E6) 2층세미나실 2502호  

---------------------------------------------------------------------------------------- 

 

Title : Understanding cooperativity in biological systems: Swimming bacteria and DNA packaging 

 

Abstract:

 

Rapidly increasing attention to life science nowadays makes it challenging and promising that physics interfaces with

biological sciences and nanotechnology, at the outside the conventional boundaries of the scientific disciplines.

In particular, it is of great interest from a physical point of view that using unique features like self-organization and

conformational flexibility, biological systems display various cooperative phenomena. Here I will introduce a couple

of examples of the cooperative phenomena and my contributions to its understanding. The first one is bacteria swimming, especially, using cilia, that clearly demonstrates very different principles of propulsion on the micro/nano-meter scale from

the macroscopic world. Nonlinear deformation of the soft object in response to hydrodynamic flow is a key factor to have

net propulsion by breaking time-reversal symmetry. Furthermore, phase locking between swimming objects is found to

occur autonomously, yielding significantly enhanced swimming efficiency. This finding provides an interesting physical

explanation on self-organized synchronization and its role in bacteria swimming. Secondly, I will discuss condensation

of charged biopolymers, which is in fact surprising and puzzling phenomena in sharp contrast with the common sense

that like charges always repel. For example, DNA is a highly, negatively charged biopolymer, but these likely-charged

DNA usually form strongly condensed phases. According to several recent experiments, DNA condensations are

effectively driven by short stiff polyamines such as spermine and spermidine. A novel energetic bridging mechanism

explaining the prevailing role of polyamines on the charged biopolymer condensation will be presented.


 

 

 나노과학기술대학원 책임교수 신중훈 배상.

번호 제목 날짜 조회 수
공지 물리학과 교수초빙 공고 2017.12.01 589
공지 홈페이지 게시글을 핸드폰 등으로 쉽게 확인하는 법 2015.10.27 2495
450 장학금 관련 안내는 portal의 "학생공지사항"->"게시판"->생활관,장학,복지를 이용하세요. 2009.02.01 255960
449 학위논문심사일정 및 작성요령 (Guidelines on the Completion and Submission of Master’s and Doctoral Dissertations) file 2010.03.15 220286
» 세미나공지-김용운박사(KIAS) 4월12일(월)오전11시~,자연과학동 2502호 2010.04.07 81075
447 [학사과정] '물리학과 전공교과목 및 연구학점' 이수 빈번한 오류(Caution on research course for graduation, Undergraduates) file 2014.03.04 80391
446 [대학원] 교과목 이수 요건 file 2014.11.24 73519
445 [최종공지]Special Invited Seminar on “The manuscript selection process at SCIENCE" 2010.04.01 70769
444 세미나공지-김필한박사(Harvard Univ.) 4월19일(월)오후2시~,자연과학동 2502호 2010.04.15 69389
443 콜로키움 일정변경 : 11월 30일자 -> 12월 7일로 변경됨, 11월 30일은 콜로키움 없습니다. 2009.11.12 69018
442 2010 대학원 신입생 등록 안내 file 2009.10.29 68450
441 미국무부 초청 연사 강연 (7월 10일) 알림 file 2009.07.09 67912
440 이투힐 양희영 장학생 선발 안내 file 2010.03.26 66170
439 Call for Proposals on On-Line Electric Vehicle (OLEV) file 2010.04.02 65565
438 2010학년도 후기 대학원 신입생 선발 모집요강 file 2010.03.25 64754
437 [대학원] 자격시험 안내 (대학원 신입생들은 반드시 숙지하세요) 2014.11.24 62278
436 홍콩과기대 교환학생 신청 - 3월 24일까지 file 2009.03.20 61989
435 [대학원][학부] 2015년 2월 및 8월 졸업대상자 학위논문제출일정 및 작성요령 안내 file 2014.11.24 61442
434 [대학원] 박사 예심 안내 file 2014.11.24 61185
433 Call for HRHR Proposals on New and Non-Conventional Hydrogen Generation Schemes file 2009.08.14 61034
432 [KEPSI]하이닉스반도체 "산학장학생 리쿠르팅 및 선발설명회" 2010.04.06 60759
431 윤리 및 안전 교과목 이수 안내 - 전학생(학부 및 대학원생) 반드시 이수해야 합니다. file 2009.03.05 60680