This work investigates how weight and pressure can function as haptic metaphors to support user interface notifications in Virtual Reality (VR). While prior research has explored ungrounded weight simulation and pneumatic feedback, their combined role in conveying information through UI elements remains underexplored. We developed a wearable haptic device that transfers liquid and air into flexible containers mounted on the back of the user's hand, allowing us to independently manipulate weight and pressure. Through an initial evaluation using three conditions-no feedback, weight only, and weight combined with pressure-we examined how these signals affect perceived heaviness, coherence with visual cues, and the perceived urgency of notifications. Our results validate that pressure amplifies the perception of weight, but this increased heaviness does not translate into higher perceived urgency. These findings suggest that while pressure___enhanced weight can enrich haptic rendering of UI elements in VR, its contribution to communicating urgency may require further investigation, alternative pressure profiles, or different types of notifications.

翻译：本研究探讨了重量和压力如何作为触觉隐喻来支持虚拟现实（VR）中的用户界面通知。尽管先前的研究已探索过无基础重量模拟和气动反馈技术，但二者在通过用户界面元素传递信息方面的协同作用仍未得到充分研究。我们开发了一种可穿戴触觉设备，可将液体和空气传输至用户手背安装的柔性容器中，从而实现对重量和压力的独立调控。通过采用三种条件（无反馈、仅重量反馈、重量与压力结合反馈）的初步评估，我们检验了这些信号如何影响感知重量、与视觉线索的一致性以及通知的感知紧迫性。研究结果证实压力能够增强重量感知，但这种增加的重感并未转化为更高的感知紧迫性。这些发现表明，虽然压力增强的重量感可以丰富VR中用户界面元素的触觉呈现，但其在传达紧迫性方面的作用可能需要进一步研究、采用不同的压力模式或适用于其他类型的通知。