Scanning tunneling microscope design structure using motor-scanning head separation technique

A separation technology and scanning tunneling technology, which is applied in the field of scanning tunneling microscope structure to prevent thermal drift and achieve clear imaging.
CN106932611AActive Publication Date: 2017-07-07SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2017-07-07

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Abstract

The invention provides a novel scanning tunneling microscope design structure using a motor-scanning head separation technique. A motor and a scanning head are separated, the scanning head is clamped at a guide rail independently by a spring piece, and the motor is responsible for pushing the scanning head to a tunnel current zone; and then the scanning head retreats autonomously. The scanning head is composed of a probe, a probe rack, a scanning tube, a corundum pedestal, and a corundum pipe and the like. Therefore, influences on imaging of the scanning head by interference factors like thermal drift and electric fluctuating caused by the motor can be prevented and thus imaging becomes clear.
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Description

technical field

[0001] The invention relates to the technical field of scanning tunneling microscopes, in particular to a scanning tunneling microscope structure using a motor-scanning head separation technology. Background technique

[0002] Scanning Tunneling Microscope (STM) is an important instrument that uses quantum tunneling effect to observe the surface morphology of samples. Because of its ultra-high real-space resolution ability, it is widely used in material property characterization, electrochemical measurement, biological imaging, etc. science field. Since the STM needs to collect extremely weak current signals during operation, the penetration of any tiny sound or vibration will have a serious impact on the stability of the tunnel junction. The scanning head and the stepping motor of the widely used STM are directly connected, and the interference on the motor (such as thermal drift, electric fluctuation, etc.) will be transmitted to the tunnel current, thereb...

Claims

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