Research

Actuators

Publications

G. Reardon, B. Dandu, Y. Shao, Y. Visell, “Shear Shock Waves Constrain Haptic Holography via Focused UltrasoundProceedings of the National Academy of Sciences, Submitted.

B. Dandu, Y. Shao, Y. Visell, “Rendering Spatiotemporal Haptic Effects via the Physics of Waves in the SkinIEEE Transactions on Haptics, 2021. (Link)

B. Dandu, I. Kuling, Y. Visell, "Proprioceptive Estimates of Finger Location Are Coarse, Biased, and Context-SensitiveIEEE Transactions on Haptics, 2020. (Link) 🏆

B. Dandu, Y. Shao, A. Stanley, Y. Visell, "Spatiotemporal Haptic Effects from a Single Actuator via Spectral Control of Cutaneous Wave PropagationProc. IEEE World Haptics Conference, 2019. (Link) 🏆

G. Reardon, Y. Shao, B. Dandu, W. Frier, B. Long, O. Georgiou, Y. Visell, "Cutaneous Wave Propagation Shapes Tactile Motion: Evidence from Air-Coupled Ultrasound" Proc. IEEE World Haptics Conference, 2019. (Link)

B. Dandu, I. Kuling, Y. Visell, "Where Are My Fingers? Assessing Multi-Digit Proprioceptive LocalizationProc. IEEE Haptics Symposium, 2018. (Link)

Sudha, N., and D. Bharat Chandrahas. "A pipelined memory-efficient architecture for face detection and tracking on a multicore environment." VLSI Design and Test (VDAT), 19th International Symposium on. IEEE, 2015. (Link)

Google Scholar page

Patents

Keller, S.J., Trutna, T.T., Benko, H., King, R., Stanley, A.A., Di Luca, M., Shao, Y., Dandu, B., Visell, Y., Methods, devices, and systems for creating localized haptic stimulations on a user. U.S. Patent Application 16/241,900, filed July 11, 2019,

Keller, S.J., Trutna, T.T., Benko, H., King, R., and Lou, Y., Shao, Y., Dandu, B. , Visell, Y., Methods, devices, and systems for creating haptic stimulations and tracking motion of a user. U.S. Patent Application 16/241,871, filed July 11, 2019.

Research Projects

Obtaining tactile motion effects with minimal actuators

  • Ran experiments to image mechanical waves on the surface of the hand when excited with various vibro-tactile stimuli.
  • We observed that spatial extent of propagation reduces monotonically with increasing frequency
  • Designed custom stimuli to induce a motion percept phenomena in the finger on contacting an actuator.
  • Designed several virtual reality (VR) experiences highlighting the utility of the motion effect.
  • Developing large-area vibro-tactile effects by utilizing a compact set of actuators on skin.
Measurements
Signal Design
VR stuff

Assessing multi-finger proprioceptive localization

  • Conducted psychophysical experiments using virtual reality and finger tracking methods to study the accuracy and precision of the position sense of the human hands and fingers.
  • Results showcase surprisingly large natural errors in localization.
  • Investigated into how the integration of visual information with proprioceptive cues enhances localization performance.
Measurements
MeasSetup
MultiSensory Integration

,& with more projects on actuator development and haptic perception actively being worked on. Further details are included in the CV.

Actuator Characterization
Low Frequencies
OptoElectrotactile