Quantum-based mechanical force realization in piconewton range

Jae Hyuk Choi, Min Seok Kim, Yon Kyu Park, Mahn Soo Choi

    Research output: Contribution to journalArticlepeer-review

    31 Citations (Scopus)

    Abstract

    Mechanical force realization based on flux quantization in the piconewton range is proposed. By controlling the number of flux quantum in a superconducting annulus, a force can be created as integer multiples of a constant step. For a 50 nm thick Nb annulus with inner and outer radii of 5 and 10 μm, respectively, and field gradient of 10 Tm, the force step is estimated to be 184 fN. The stability against thermal fluctuations is also addressed.

    Original languageEnglish
    Article number073117
    JournalApplied Physics Letters
    Volume90
    Issue number7
    DOIs
    Publication statusPublished - 2007

    Bibliographical note

    Funding Information:
    One of the authors (M.-S.C.) was supported by SRC/ERC (R11-2000-071) and KRF Grants (KRF-2005-070-C00055 and KRF-2006-312-C00543).

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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