MicroSQUID: A Close-Spaced Four Channel Magnetometer
MicroSQUID: A Close-Spaced Four Channel Magnetometer
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MicroSQUID：近距离四通道磁力计
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
J. Wikswo
中科院分区：
文献类型：
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作者：
D. S. Buchanan;D. Crum;D. Cox;J. Wikswo
典型的基于SQUID的磁力计目前构造有15至25 mm直径的线圈，线圈与室温测量表面间隔12至20 mm。这两个尺寸限制了这些系统的空间分辨率。为了了解生物电活动产生的磁场的基本决定因素，需要更好的空间分辨率（Wikswo，1988）。为了解决这一需求，我们已经开发了一种近距离的四通道磁力计，其具有3mm直径的一阶非对称梯度计拾取线圈，该线圈在4.4mm网格上间隔开并且位于距离室温下的测量表面<1.5mm处：μSQUID™。
Typical SQUID-based magnetometers are currently constructed with 15 to 25 mm diameter coils that are spaced back from the room temperature measurement surface 12 to 20 mm. Both of these dimensions limit the spatial resolution of these systems. To understand the fundamental determinants of magnetic fields produced by bioelectric activity, better spatial resolution is needed (Wikswo, 1988). To address this need we have developed a close-spaced, four-channel magnetometer having 3mm diameter first-order assymetric gradiometer pick-up coils spaced on a 4.4mm grid and residing < 1.5 mm from the measurement surface which is at room temperature: μSQUID™.