This study evaluates the usability and user preference of Mylar surface films with different degrees of roughness for laptop touchpads. A total of 30 individuals were recruited to participate in an experiment. The usability of the touchpad was assessed using Fitts' law task. The user's subjective feelings were collected, including value perception, texture sensation, and preference. The experimental results indicated a shorter reaction time when the surface roughness of the touchpad was greater than 1.0 μm. However, the error rate was lower and subjective preference was higher when the surface roughness of the touchpad was between 0.5 and 1.3 μm. The results of this study provide an understanding of the effects of touchpad roughness on human motor control behavior and could guide the choice of surface materials for future touchpad design and manufacture.

中文翻译：

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笔记本电脑中触摸板表面触觉的用户偏好和可用性评估

这项研究评估了笔记本电脑触摸板具有不同粗糙度的Mylar表面膜的可用性和用户偏爱。总共招募了30个人参加实验。使用Fitts的法律任务评估了触摸板的可用性。收集用户的主观感觉，包括价值感知，质感和偏好。实验结果表明，当触摸板的表面粗糙度大于1.0μm时，反应时间较短。然而，当触摸板的表面粗糙度在0.5和1.3μm之间时，错误率较低并且主观偏好较高。