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"Surface haptic rendering of virtual shapes through change in surface temperature", Changhyun Choi, Yuan Ma, Xinyi Li, Sitangshu Chatterjee, Sneha Sequeira, Rebecca F. Friesen, Jonathan R. Felts and M. Cynthia Hipwell, Science Robotics (link to downloadable copy)
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"Nanotexture Shape and Surface Energy Impact on Electroadhesive Human–Machine Interface Performance", Xinyi Li, Yuan Ma, Changhyun Choi, Xuezhi Ma, Sitangshu Chatterjee, Shoufeng Lan, and M. Cynthia Hipwell, Advanced Materials
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"Finger Pad Topography beyond Fingerprints: Understanding the Heterogeneity Effect of Finger Topography for Human–Machine Interface Modeling" ,Changhyun Choi, Yuan Ma, Xinyi Li, Xuezhi Ma, and M. Cynthia Hipwell, ACS Applied Materials & Interfaces
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"Electrowetting: a consideration in electroadhesion", X. Li, C. Choi, Y. Ma, P. Boonpuek, J. R. Felts, J. Mullenbach, C. Shultz, J. E. Colgate, M. C. Hipwell, IEEE Transactions on Haptics
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"Design and Optimization of a Finger-Surface Tribometer with Constant Normal Load Control", S .Chatterjee, M. Del Toro, X. Li, Y. Ma, M. C. Hipwell, STLE 2019 Tribology Frontiers Conference
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"Study of Human Fingertip Friction with Controlled Relative Humidity", X. Li, C. Lai, S. Chatterjee, Y. Ma, M. C. Hipwell, STLE 2019 Tribology Frontiers Conference
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"Modeling Capillary Behavior in Finger-Device Interfaces", Y. Ma, M. C. Hipwell, STLE 2019 Tribology Frontiers Conference