Perceptibility of programmable softness displays using magnetorheological elastomers
Perceptibility of programmable softness displays using magnetorheological elastomers
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DOI：
10.1177/21695067231193685
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发表时间：
2023-09
期刊：
影响因子：
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通讯作者：
Bingxu Li;Jaeyeon Lee;G. J. Gerling
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文献类型：
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作者：
Bingxu Li;Jaeyeon Lee;G. J. Gerling
虽然我们经常关注视觉系统，但在VR/AR环境中添加触摸可以帮助呈现更沉浸、更丰富的用户体验。一个重要的触摸是顺从，或“柔软”。在这里，我们评估的感知软，磁流变弹性体（MRE）在裸手指的相互作用。这些材料可以被重新编程为不同的顺应性状态。我们制造的MRE样品的弹性模量从23-173千帕，并测量小0.25 T的磁场增加模量10-60千帕。MRE接口更少，更符合手指皮肤进行了评价，在歧视实验，有和没有磁场。结果表明，11千帕的模量的变化需要达到75%的阈值的歧视，虽然需要更大的差异时，MRE的弹性是大约相同的皮肤。这些磁感应材料的感知结果类似于那些非致动的，固体硅橡胶弹性体，模仿自然的相互作用。
While often focused on our visual system, adding touch to VR/AR environments can help render more immersive, richer user experiences. One important touch percept to render is compliance, or ‘softness.’ Herein, we evaluate the perceptibility of soft, magnetorheological elastomers (MRE) in bare-finger interactions. Such materials can be reprogrammed to distinct states of compliance. We fabricated MRE samples over elastic moduli from 23–173 kPa and measured that small 0.25 T magnetic fields increased modulus by 10–60 kPa. MRE interfaces less and more compliant than finger skin were evaluated in discrimination experiments with and without a magnetic field. The results indicate changes in modulus of 11 kPa are required to reach a 75% threshold of discrimination, although greater differences are required when an MRE’s elasticity is about the same as skin. The perceptual results with these magnetically-induced materials are similar to those with non-actuated, solid silicone-elastomers that mimic naturalistic interactions.