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

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Fabrication and Characterization of an Attonewton-sensitivity Si Cantilever with an Nb Micro-ring

        김윤원,최헌화,최재혁,이순걸 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.60 No.7

        We have fabricated ultrasensitive silicon cantilevers integrated with a superconducting Nb micro-ring as a key part of a flux quantum-based force measurement system, and have characterized both their mechanical and superconducting properties by mechanical methods. A 50 nm-thick Nb ring with the inner and outer radii of 5 µm and 10 µm was mounted by DC magnetron sputtering and lift-off on the end of a 410 µm-long, 4 µm-wide and 340 nm-thick single-crystalline silicon cantilever. The cantilever showed force sensitivity as good as 4.2 aN/√Hz at 3 K, which was estimated from its spring constant of 2.6 ×10<sup>-5</sup> N/m and a quality factor of 31000. The superconducting property of the Nb micro-ring was observed from the variation of the cantilever vibration amplitude while the vibration was driven by an excitation coil, showing a transition temperature of 7 K. The superconducting transition was also confirmed through an electrical transport measurement for a separately prepared Nb strip film on a silicon wafer.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼