کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
190113 459692 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Straightforward single-step generation of microswimmers by bipolar electrochemistry
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Straightforward single-step generation of microswimmers by bipolar electrochemistry
چکیده انگلیسی

Autonomous microswimmers are of enormous interest not only from an academic point of view, but also for future practical applications ranging from miniaturized motors to nanomedicine. A key step for the generation of such objects is their dissymmetric modification with a catalyst particle that activates the chemical conversion of a fuel molecule, leading ultimately to the propulsion of the object. So far it has been quite difficult to synthesize such dissymmetric objects and most approaches are based on using interfaces to break the symmetry. We demonstrate here that a very simple approach based on bipolar electrochemistry allows the bulk generation of carbon microtubes that are modified selectively at one end with a Pt cluster. The presence of this metal cluster allows the catalytic decomposition of hydrogen peroxide and the resulting oxygen bubbles trigger the propulsion of the object. The type of motion can be switched from linear to circular as a function of the exact position of the Pt cluster.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 56, Issue 28, 1 December 2011, Pages 10562–10566
نویسندگان
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