Nanoscale elastic adjusting platform device and application method thereof

Abstract

The invention discloses a nanoscale elastic adjusting platform device and an application method thereof, the nanoscale elastic adjusting platform device comprises a surface sensitive detection ring and a nano pressure head, a micro electromagnetic valve is embedded in the end part of the surface sensitive detection ring, the nano pressure head is arranged on the inner side of the surface sensitive detection ring, and the nano pressure head penetrates through the micro electromagnetic valve. In the application process, firstly, the surface sensitive detection ring is driven to move, the nano pressure head is made to get close to a sample, meanwhile, the micro electromagnetic valve is controlled to be started, the nano pressure head is locked to the surface sensitive detection ring through the micro electromagnetic valve, and when the surface sensitive detection ring makes contact with the sample and collects contact force, the micro electromagnetic valve is controlled to be closed; then, the nano indenter is driven to move, so that the end part of the nano indenter extends out of the outer side of the surface sensitive detection ring, and a nano indentation test is carried out on the sample by virtue of the indenter. Compared with the prior art, the initial contact point is easy to determine, interference in the testing process can be reduced, the operation difficulty can be effectively reduced, and errors can be reduced.

Description

technical field [0001] The invention relates to biological tissue mechanical performance testing equipment, in particular to a nanoscale elastic adjustment platform device and an application method thereof. Background technique [0002] In the prior art, the main problems faced by commercial indenters when dealing with indentation testing of biological samples include: 1. Biological samples need to be immersed in a physiological solution for experiments, while the conventional nano-indentation indenter is short and cannot be used. It goes deep into the liquid surface, which greatly restricts the smooth progress of the experiment; 2. Biological samples are often very soft, and the force-displacement slope generated by the indenter and the sample at the initial contact changes very little, and the commercial indenter is just through the This slope change is sensed to determine the initial contact point. Therefore, in many cases, commercial indenters cannot accurately and autom...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, commercial indentation instruments mainly face the following problems when dealing with indentation tests on biological samples: 1. Biological samples need to be immersed in physiological solutions for experiments, while conventional nano-indentation indenters are short and cannot 2. Biological samples are often very soft, and the force-displacement slope changes little when the indenter contacts the sample for the first time, and the commercial indentation instrument just passes through The initial contact point is determined by sensing this slope change. Therefore, in many cases, the commercial indentation instrument cannot accurately and automatically determine the initial contact point. In this case, it is necessary to manually determine the contact point. High requirements lead to increased difficulty in operation, and it is difficult to avoid errors

Images