Abstract Virtual reality and augmented (VR/AR) are evolving. The market demands innovation efforts call for a shift in the key VR/AR technologies engaging people virtually. Tele‐haptics with multimodal bilateral interactions emerging as future of industry. By transmitting receiving haptic sensations wirelessly, tele‐haptics allow human‐to‐human beyond traditional interactions. core include tactile sensing feedback based on highly advanced sensors actuators. Recent developments innovations...

The development of bioinspired switchable adhesive systems has promising solutions in various industrial/medical applications. Switchable and perceptive adhesion regardless the shape or surface object is still challenging dry aquatic surroundings. We developed an electronic sensory soft device that recapitulates attaching, mechanosensory, decision-making capabilities a actuator. actuator artificial octopus sucker may precisely control its robust attachment against surfaces with topologies...

To validate the feasibility of precise noninvasive functional mapping in humans, a large-array biomagnetometer was used to map somatosensory cortical locations corresponding numerous distinct tactile sites on fingers, hand, arm, and face different subjects. Source localizations were calculated by using single equivalent current dipole (ECD) model. Dipole transposed upon subject's magnetic resonance image (MRI) resolve anatomic locus individual dipoles within given subject. Biomagnetic...

Abstract Bioinspired soft devices, which possess high adaptability to targeted objects, provide promising solutions for a variety of industrial and medical applications. However, achieving stable switchable attachment objects with curved, rough, irregular surfaces remains difficult, particularly in dry underwater environments. Here, highly adaptive microstructured adhesion device is presented, inspired by the geometric material characteristics tiny denticles on surface an octopus sucker. The...

In these days, tactile sensation using a vibration motor is recently receiving attention for immersive interaction with mobile devices. However, the not enough to provide detailed texture or small-scale shape. order generate various and exiting sensation, this paper presents new actuator solenoid, permanent magnet an elastic spring. This also proposes miniature module proposed actuators. On constructing module, we separate springs in actuators into several layers minimize contactor's gap...

There exists a growing need for cost-effective, reliable, and portable pulsation simulator that can generate wide variety of pulses depending on age cardiovascular disease. For constructing compact simulator, this study proposes to use pneumatic actuator based cam-follower mechanism controlled by DC motor. The is intended pulse waveforms range pressures heart beats are realistic human blood pulsations.This first performed in vivo testing healthy young man collect his using robotic tonometry...

In this article, present RealWalk, a pair of haptic shoes for HMD-based VR, designed to create realistic sensations ground surface deformation, and texture using Magnetorheological fluid (MR fluid). RealWalk offers novel interaction scheme through the physical between shoes, surfaces while walking in VR. Each shoe consists two MR actuators, an insole pressure sensor, foot position tracker. The actuators are form multi-stacked disc structure with long flow path maximize resistance. With...

For highly conformable and universal transport devices, bioinspired dry adhesion systems with reversible molecular attractions (e.g., van der Waals forces, capillarity, or suction stress) between the engaged surfaces have recently become favorable for various dry/wet processes in flexible devices medical applications. In addition, many efforts been made switchable attachments of such adhesives by employing costly sophisticated as mechanically deformable chucks, UV-radiating components,...

This study presents a cardiovascular simulator that mimics the human system's physiological structure and properties to reproduce blood pressure waveform. Systolic, diastolic pressures, its waveform are key indicators of health. The is closely related pulse wave velocity overlap forward reflected waves. presented includes an artificial aorta made biomimetic silicone. has same shape stiffness as standard encased with compliance chamber. chamber prevents distortion from strain-softening by...

Abstract Recently, the intelligent strategies for adapting to multiple challengeable surfaces of electroactive programmable materials integrated with bio‐inspired architectures offer expanded directions beyond traditional limitations in soft grippers, medical mobile robots, and XR (Extended Reality) interfaces. These adhesive are adaptively designed a variety complex surfaces, including soft, wet, non‐flat, or contamination‐susceptible feature such as bio‐surfaces vulnerable objects. They...

Realistic haptic feedback is needed to provide information users of numerous technologies, such as virtual reality, mobile devices, and robotics. For a device convey realistic feedback, two touch sensations must be present: tactile kinesthetic feedback. Although many devices today through vibrations, most neglect incorporate To address this issue, study investigates with the aim conveying both vibrotactile users. A prototype based on electrorheological fluids was designed fabricated. By...

Abstract Continuously printable electronics have the significant advantage of being efficient for fabricating conductive polymer composites; however, precise tailoring 3D hierarchical morphology nanocomposites in a simple dripping step remains challenging. Here, we introduce one‐step direct printing technique to construct diverse microdome morphologies influenced by interfacial Marangoni effect and nanoparticle interactions. Using jet dispenser continuous processing, effectively fabricated...

This paper presents a small and lightweight tactile display system describes its capabilities with respect to spatial temporal feedback. Each module is comprised of 4times4 piezoelectric ultrasonic actuator array resolution 1.5 mm 20 Hz. The objective this research build such that the system, including modules complete controller parts, will be wearable by user. It was found developed can both information less power consumption.

This study investigates a miniature haptic button actuated by magnetorheological fluids with the aim of conveying kinesthetic information or realistic sensations to users for small electronic devices. To this end, prototype that creates varying was designed and constructed. The design focus maximize resistive force generated in given size using multiple operating modes fluids. In order evaluate performance prototype, test setup consisting microstage precision load cell Using setup, measured...

This study presents a database of central blood pressure waveforms according to cardiovascular health conditions, supplement the lack clinical data in research, constructed by simulator. Blood (BP) is most frequently measured biomarker, and addition systolic diastolic pressure, its waveform represents various conditions health. A BP formed overlapping forward reflected waves, which are affected pulse wave velocity (PWV). The increase vascular stiffness with aging increases PWV, PWV-age...

Abstract A stable conformal interface technology for rough and sweaty complex skin is essential a haptic capable of delivering sophisticated mechanical stimuli. However, conventional polymeric/hydrogel‐based adhesives cannot maintain adequate adhesion interaction performance at the due to repetitive vibrations or skin. This study reports reversible, versatile skin‐attached platform, which embeds hybrid architecture water‐drainable hexagonal array frog toe pads energy‐dissipation matrix snail...

To meet the need for “standard” testing system wearable blood pressure sensors, this study intends to develop a new radial pulsation simulator that can generate age-dependent reference artery waveforms reflecting physiological characteristics of human cardiovascular system. closely duplicate system, proposed consists left ventricle simulation module, an aorta peripheral resistance and positive/negative control reservoir module. Simulating physiologies pressure, compliance chamber in arterial...

Abstract Some organisms often use adhesive setae to manipulate objects or communicate critical signals for survival through subtle surface‐transmitted vibrations, along with locomotion and long‐term adherence. Inspired by this phenomenon, the spatially selective vibration‐transmitting electronics of a multi‐pixelated electroactive‐actuating patch coupled small architectures are presented. Here, diving beetle‐like dense hairs possessing concave cavities introduced obtain high adaptability on...

This study presents a design and evaluation of mock circulatory platform, which can reproduce blood pressure its waveforms to provide palpation experience based on the human cardiovascular physiology. To behavior, especially pressure, proposed platform includes three major modules: heart, artery reservoir modules. The heart module reproduces source exerted whole system with controlled time-profile. consists resistance valve adjust open area vessel compliance chamber adjusting wall stiffness...

This paper presents a new subminiature impact type actuator which creates the haptic sensation in mobile device. Recently, linear resonance actuators (LRA) are widely used. One of key differences between an LRA and traditional eccentric motor is that generates vibrotactile through for minimizing response time. The strategy operation near resonant frequency, however, brought issue creating can be strong enough to feel arbitrary frequency. In order achieve this issue, we adopt unstable...

We present RealWalk, a pair of haptic shoes for HMD-based VR, designed to create realistic sensations ground surface deformation and texture through MR fluid actuators. RealWalk offers novel interaction scheme the physical between surfaces while walking in VR. Each shoe consists two actuators, an insole pressure sensor, foot position tracker. When user steps on with shoes, actuators are depressed, creating variety material such as snow, mud, dry sand by changing its viscosity. build...