کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5008645 1462037 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanotube-on-graphene heterostructures for three-dimensional nano/bio-interface
ترجمه فارسی عنوان
نانوتوب در گرافن برای ساخت سه بعدی نانو / بیو-رابط
کلمات کلیدی
نانوسیم مغناطیسی هسته؛ نانوتوب در گرافین؛ ساختار سازمانی؛ گرافیتی گرافیتی؛ ضبط الکتروشیمیایی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


- The nanotube-on-graphene heterostructure devices were fabricated for sensor application.
- Investigate the ability to record cellular electrical activity using nanotube-on-graphene heterostructure devices.
- Demonstrate the potential of the multiplexed electrical recording capabilities of biological sensor arrays based on vertical nanotubes and planar graphene FETs.

We report the synthesis, fabrication, and characterization of a nanotube-on-graphene (NT-on-Gr) field-effect sensor array for electrical detection of the biological activity of living cells. In order to form vertical nanotubes on a graphene surface, Ge/Si core-shell nanowires were vertically grown on graphene, followed by cap opening and Ge core-etching processes. Source-drain current versus water-gate potential measurements in electrolyte solutions with various pH values showed typical gate-dependent ambipolar characteristics with a decrease in pH sensitivity versus that of a flat graphene field-effect sensor. This is associated with limited solution gating of Si nanotubes that form nanoscale fluidic channels and thus interconnect the solution with the graphene field-effect sensor. The Si nanotubes also bridged interconnections between cells and the graphene field effect sensors, which were then able to record electrical spike peaks caused by cell networks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 254, January 2018, Pages 16-20
نویسندگان
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