Kameoka Takayuki, Takahashi Akifumi, Yem Vibol, Kajimoto Hiroyuki, Matsumori Kohei, Saito Naoki, Arakawa Naomi
Department of informatics, The University of Electro-Communications, Tokyo 182-8585, Japan.
Shiseido Global Innovation Center, Kanagawa 220-0011, Japan.
Micromachines (Basel). 2019 Sep 27;10(10):652. doi: 10.3390/mi10100652.
The quantification of stickiness experienced upon touching a sticky or adhesive substance has attracted intense research attention, particularly for application to haptics, virtual reality, and human-computer interactions. Here, we develop and evaluate a device that quantifies the feeling of stickiness experienced upon touching an adhesive substance. Keeping in mind that a typical pressure distribution sensor can only measure a pressing force, but not a tensile force, in our setup, we apply an offset pressure to a pressure distribution sensor and measure the tensile force generated by an adhesive substance as the difference from the offset pressure. We propose a method of using a magnetic force to generate the offset pressure and develop a measuring device using a magnet that attracts magnetic pin arrays and pin magnets; the feasibility of the method is verified with a first prototype. We develop a second prototype that overcomes the noise problems of the first, arising from the misalignment of the pins owing to the bending of the magnetic force lines at the sensor edges. We also obtain measurement results for actual samples and standard viscosity liquids. Our findings indicate the feasibility of our setup as a suitable device for measuring stickiness.
触摸粘性或粘性物质时所体验到的粘性量化问题已引起了广泛的研究关注，特别是在触觉、虚拟现实和人机交互领域的应用。在此，我们开发并评估了一种能够量化触摸粘性物质时所体验到的粘性感觉的装置。考虑到典型的压力分布传感器只能测量压力，而不能测量拉力，在我们的装置中，我们向压力分布传感器施加一个偏置压力，并将粘性物质产生的拉力测量为与偏置压力的差值。我们提出了一种利用磁力产生偏置压力的方法，并开发了一种使用磁体吸引磁针阵列和针状磁体的测量装置；该方法的可行性通过第一个原型得到了验证。我们开发了第二个原型，克服了第一个原型因传感器边缘磁力线弯曲导致针未对齐而产生的噪声问题。我们还获得了实际样品和标准粘度液体的测量结果。我们的研究结果表明，我们的装置作为一种测量粘性的合适设备是可行的。
