Development of a Softness Sensing System by Using Dynamic Response of Piezoelectric Vibrator and Its Application to Detect Mechanical Properties of Living Cells.
Development of a Softness Sensing System by Using Dynamic Response of Piezoelectric Vibrator and Its Application to Detect Mechanical Properties of Living Cells.
复制标题
利用压电振动器动态响应开发柔软度传感系统及其在检测活细胞机械性能中的应用。
DOI：
10.1299/jsmec.43.772
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
H. Nishida
中科院分区：
文献类型：
--
作者：
T. Kosawada;H. Satoh;H. Nishida
开发一种可靠的方法来确定材料或物体的“柔软度”将为我们提供一些有意义的力学信息。在这项研究中，一种新的传感方法是专门开发的海绵状软和细胞状的小物体的柔软度检测通过使用压电振子的动态响应。用压电陶瓷激发小梁式振子的弯曲振动模式。该振子的振动端一旦与软质物体接触，其固有频率就会根据其在端部边界处的动力约束程度而发生变化。这种频率变化与物体的机械特性有某种关系，并被认为是给我们提供有用的指标，如物体的柔软度。为了证明该传感系统的能力，已经进行了实验研究，以检测硅橡胶块和受精活卵细胞的柔鱼。
Development of a reliable method to determine the "softness" of materials or objects will provide us some meaningful mechanical information. In this study, a novel method of sensing is specifically developed to detect softness of sponge-like soft and cell-like small objects by using dynamic response of piezoelectric vibrator. The bending mode of vibration of a small beam type vibrator is excited by using piezoelectric ceramics. Once the vibrating end of this vibrator is contacted on the soft object, the natural frequency of the vibrator could be changed according to degrees of its dynamic constraints at the end boundary. This frequency change has a certain kind of relationships with the mechanical properties of the object and is considered to give us useful indicator as the softness of that object. In order to demonstrate the capability of this sensing system, experimental studies have been carried out to detect softness of silicone rubber blocks and fertilized living egg cells of killifish.