کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5031316 1470933 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hall effect biosensors with ultraclean graphene film for improved sensitivity of label-free DNA detection
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Hall effect biosensors with ultraclean graphene film for improved sensitivity of label-free DNA detection
چکیده انگلیسی


- The detection limit of graphene DNA sensors with ultraclean surface can achieve 1 pM.
- The sensitivity of the devices is 5 times higher than that prepared by common PMMA transfer process.
- The performance of the devices is 4 times better than liquid-gated FET decives.

The quality of graphene strongly affects the performance of graphene-based biosensors which are highly demanded for the sensitive and selective detection of biomolecules, such as DNA. This work reported a novel transfer process for preparing a residue-free graphene film using a thin gold supporting layer. A Hall effect device made of this gold-transferred graphene was demonstrated to significantly enhance the sensitivity (≈ 5 times) for hybridization detection, with a linear detection range of 1 pM to 100 nM for DNA target. Our findings provide an efficient method to boost the sensitivity of graphene-based biosensors for DNA recognition.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 99, 15 January 2018, Pages 85-91
نویسندگان
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