Apercevoir is an artwork that can perceive its environmental perturbations and convert them into a spatial sound field with location information. It consists of multiple plant cyborgs comprised of a Mimosa Pudica (sensitive plant) connected to a bioamplifier and can sense human movements by analyzing the biosignals with a machine learning model. Through sharing multiple cyborgs' biosignals, this network portrays the concept of multiple beings transcending an individual's physical confines to form a Bio Internet of Things (IOT) system capable of perception, feedback, and group decision-making within a wider scope. A particular feature of this system is its interactive bone induction headphones, where the audience can listen to a sound field including 'vibrations' of nearby human activities detected by plant cyborgs, and even warnings among the cyborg network responding to foreign disturbance and damage. This sound field invites audiences to close their eyes and listen attentively to plants while the biosignals and changes in sound reveal the presence of other entities in the space.

Including olfactory cues in virtual reality (VR) would enhance user immersion in the virtual environment, and precise control of smell would facilitate a more realistic experience for users. In this paper, we present aBio, an active bi-olfactory display system that delivers scents precisely to specific locations rather than diffusing scented air into the atmosphere. aBio provides users with a natural olfactory experience in free air by colliding two vortex rings launched from dual speaker-based vortex generators, which also has the effect of cushioning the force of air impact. According to the various requests of different applications, the collision point of the vortex rings can be positioned anywhere in front of the user's nose. To verify the effectiveness of our device and understand user sensations when using different parameters in our system, we conduct a series of experiments and user studies. The results show that the proposed system is effective in the sense that users perceive smell without sensible haptic disturbance while the system consumes only a very small amount of fragrant essential oil. We believe that aBio has great potential for increasing the level of presence in VR by delivering smells with high efficiency.