微/ 納米冰鑷操作器執行過程的數值模擬

冰鑷是一種借助于針尖與作用對象之間形成的極微小冰晶來實現對物體靈巧操縱的微/ 納米操作技術,應用該器件不僅可以實現如拾取、擺放等簡單動作,更可以方便地實施如拉、旋轉等復雜操作,且不受對象的形狀、帶電與否、重量、材料以及質地等限制,并可與其它機構結合,組成微觀意義上的自動化設備. 針對冰鑷的工作原理,基于相應的流體力學及傳熱學數學模型,從數值計算角度對微納米尺度下冰鑷的執行過程進行了模擬,在此基礎上可望更好地理解冰鑷的工作狀態及控制過程,從而有助于設計優化新的微/ 納米冰鑷器件.

:As a new kind of micro/ nano manip ulation tool , f reeze tweezer was enabled by using the f reezing force of a small volume of nucleotide ice to manip ulate micro/ nano object s. It allows not only t he simple actions such as picking up , releasing , but al so t he complex manip ulations like p ulling and rotating object swith any shape , elect ric charge , weight , material or character . Such device can be integrated wit h ot her machines so as to const ruct certain automatic facility in micro sense. Following the working principle of t he freeze tweezer , this paper is aimed to numerically simulate t he operation behaviors of t he f reeze tweezer by
using t he corresponding fluid mechanics and heat t ransfer model s. Through this prehensive analysis ,t he working feat ures and cont rolling activities of such device can be well nderstood , which allows for f urt her designing and optimization of the micro/ nano f reeze tweezers.