In situ bending and recovery characterization of hollow glass nanoneedle based on nanorobotic manipulation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Article number095011
Journal / PublicationJournal of Micromechanics and Microengineering
Issue number9
Online published21 Aug 2017
Publication statusPublished - Sep 2017


Glass nanoneedles are important tools for injecting drugs and other materials into living cells. Although we know a great deal about the mechanical properties of glass structures at the millimeter scale, relatively little is known at the nanoscale. Here we investigate the mechanical performance of hollow glass nanoneedles by nanorobotic in situ manipulation inside SEM. Quartz and borosilicate nanoneedles fabricated from glass capillaries are assembled on the nanorobotic characterization system inside SEM and their behaviors during bending and recovery are studied in situ. The result indicates the glass nanoneedle could present a large elastic bending deformation (>90°). Specifically, the quartz nanoneedle takes on larger bending strength and its deformation can recover totally. In contrast, the borosilicate nanoneedle presents more flexible and still 20% of deformation is remained after 3 months. These results not only enhances our basic understanding on nanoglass materials but also provides references for practical nanomanipulation applications.

Research Area(s)

  • deformation recovery, glass nanoneedle bending, in situ SEM characterization, nanomanipulation

Citation Format(s)