Simulations of Interaction Among GMRs in a Nano-Sized Biosensor Array  

作　　者：尹聪 贾泽 马维超 任天令 

机构地区：[1]Tsinghua National Laboratory for Information Science and Technology,Institute of Microelectronics,Tsinghua University

出　　处：《Tsinghua Science and Technology》2011年第2期151-156,共6页清华大学学报（自然科学版（英文版）

基　　金：Supported by the National High-Tech Research and Development (863) Program of China (No. 2009AA01Z115);the National Key Projects of China (No. 2009ZX02023-1-3);the National Natural Science Foundation of China (No. 60729308)

摘　　要：The interactions among nano-sized giant magnetoresistances （GMRs） which can affect the bio- sensor operation, were studied using micromagnetic simulations and micromagnetic analysis. The magnetic field energy, the magnetization distribution and the effective magnetic field were simulated for variable spacer distances, aspect ratios and external magnetic fields to study the interactions among the GMR sensors. And the spacer distance should be at least 1000 nm to eliminate interference between 1000 nm× 100 nm×9 nm or larger GMRs in an array, while the aspect ratio should be more than 10 to improve the sensor sensitivity and stability. Micromagnetic energy theory is used to explain the simulation results.The interactions among nano-sized giant magnetoresistances （GMRs） which can affect the bio- sensor operation, were studied using micromagnetic simulations and micromagnetic analysis. The magnetic field energy, the magnetization distribution and the effective magnetic field were simulated for variable spacer distances, aspect ratios and external magnetic fields to study the interactions among the GMR sensors. And the spacer distance should be at least 1000 nm to eliminate interference between 1000 nm× 100 nm×9 nm or larger GMRs in an array, while the aspect ratio should be more than 10 to improve the sensor sensitivity and stability. Micromagnetic energy theory is used to explain the simulation results.

关 键 词：BIOSENSOR giant magnetoresistance MICROMAGNETIC INTERACTION 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置]