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13
Graphene-Based Electrochemical Biosensors
Chun Xian Guo, Shu Rui Ng, and Chang Ming Li
13.1 Introduction
Graphene is a single-atom-thick planar sheet of sp
2
-bonded carbon atoms perfectly
arranged in a honeycomb structure that forms a large polyaromatic molecule of semi-
innite size [1]. The unique structure endows graphene with interesting and extraordinary
CONTENTS
13.1 Introduction ........................................................................................................................ 317
13.2 Graphene Properties and Preparation ............................................................................ 318
13.2.1 Electron ...