کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5462614 1517178 2018 3 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Annual-ring shaped graphene as a free-standing field emitter with high performance
ترجمه فارسی عنوان
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
Graphene oxide (GO) sheets were synthesized via a modified Hummer's method. Subsequently, annual-ring shaped graphene hydrogel was formed through alkali-inducing hydrothermal process. The lyophilized GO hydrogel was tailored to a cylindrical emitter and demonstrated good field emission performance: maximum current density reached 2.32 mA/cm2, field enhanced factor of 1969 and turn-on electric field at 2.41 V/μm, accompanied with excellent stability. Moreover, the emitter also exhibited superior mechanical properties, such as ultra-light, flexibility and free-standing. These results suggest that the resultant with unique structure has a potential to be utilized as a high-performance field emitter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 210, 1 January 2018, Pages 133-135
نویسندگان
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