Research Area
Year Published

109 Results

April 29, 2019

Precise Network Polymerized Ionic Liquids for Low-Voltage, Dopant-Free Soft Actuators

Advanced Materials

Here, a class of network polymerized ionic liquid (n-PIL) actuators is reported, synthesized via a facile step growth polymerization, which not only have comparable actuation strains (≈0.9%) to other state-of-the-art ionic polymer systems at ±3 V, but also exhibit 85% performance preservation after 1000 testing cycles and operate with no additives such as solvent or free ionic liquid.

By: Chengtian Shen, Qiujie Zhao, Christopher M. Evans
Areas: AR/VR

April 28, 2019

Inverse Path Tracing for Joint Material and Lighting Estimation

Computer Vision and Pattern Recognition (CVPR)

Modern computer vision algorithms have brought significant advancement to 3D geometry reconstruction. However, illumination and material reconstruction remain less studied, with current approaches assuming very simplified models for materials and illumination. We introduce Inverse Path Tracing, a novel approach to jointly estimate the material properties of objects and light sources in indoor scenes by using an invertible light transport simulation.

By: Dejan Azinović, Tzu-Mao Li, Anton S. Kaplanyan, Matthias Nießner

April 19, 2019

Cutting the Cord: Soft Haptic Devices without a Pressure Source

International Conference on Soft Robotics (RoboSoft)

We present a class of pneumatic haptic devices that use the input motion from a user to pump fluid in a closed pneumatic circuit, meaning that the pneumatic devices require no external pressure supply.

By: Nathan Usevitch, Andrew Stanley
Areas: AR/VR

March 29, 2019

The effect of generic headphone compensation on binaural renderings

Audio Engineering Society (AES)

In this study, the effects of generic headphone equalization in binaural rendering are evaluated objectively and subjectively, with respect to unequalized and individually-equalized cases.

By: Isaac Engel, David Lou Alon, Philip Robinson, Ravish Mehra
Areas: AR/VR

March 28, 2019

Harassment in Social VR: Implications for Design

IEEE Conference on Virtual Reality

We interviewed VR users (n=25) about their experiences with harassment, abuse, and discomfort in social VR.

By: Lindsay Blackwell, Nicole Ellison, Natasha Elliott-Deflo, Raz Schwartz
Areas: AR/VR

March 27, 2019

Evaluation of real-time sound propagation engines in a virtual reality framework

AES International Conference on Immersive and Interactive Audio

Sound propagation in an enclosed space is a combination of several wave phenomena, such as direct sound, specular reflections, scattering, diffraction, or air absorption, among others. Achieving realistic and immersive audio in games and virtual reality (VR) requires real-time modeling of these phenomena.

By: Sebastià V. Amengual Garí, Carl Schissler, Ravish Mehra, Shawn Featherly, Philip W. Robinson
Areas: AR/VR

March 26, 2019

The Impact of Avatar Tracking Errors on User Experience in VR

IEEE Conference on Virtual Reality

This paper presents a series of experiments employing a sizable subject pool (n=96) that study the impact of motion tracking errors on user experience for activities including social interaction and virtual object manipulation.

By: Nicholas Toothman, Michael Neff

March 23, 2019

The Effect of Hand Size and Interaction Modality on the Virtual Hand Illusion

IEEE Conference on Virtual Reality

In this paper, we consider how concepts related to the virtual hand illusion, user experience, and task efficiency are influenced by variations between the size of a user’s actual hand and their avatar’s hand.

By: Lorraine Lin, Aline Normoyle, Alexandra Adkins, Yu Sun, Andrew Robb, Yuting Ye, Massimiliano Di Luca, Sophie Jörg
Areas: AR/VR

February 16, 2019

Machine Learning at Facebook: Understanding Inference at the Edge

IEEE International Symposium on High-Performance Computer Architecture (HPCA)

This paper takes a data-driven approach to present the opportunities and design challenges faced by Facebook in order to enable machine learning inference locally on smartphones and other edge platforms.

By: Carole-Jean Wu, David Brooks, Kevin Chen, Douglas Chen, Sy Choudhury, Marat Dukhan, Kim Hazelwood, Eldad Isaac, Yangqing Jia, Bill Jia, Tommer Leyvand, Hao Lu, Yang Lu, Lin Qiao, Brandon Reagen, Joe Spisak, Fei Sun, Andrew Tulloch, Peter Vajda, Xiaodong Wang, Yanghan Wang, Bram Wasti, Yiming Wu, Ran Xian, Sungjoo Yoo, Peizhao Zhang

December 17, 2018

Compact Dielectric Elastomer Linear Actuators

Advanced Functional Materials 2018

The design and fabrication of a rolled dielectric elastomer actuator is described and the parametric dependence of the displacement and blocked force on the actuator geometry, elastomer layer thickness, voltage, and number of turns is analyzed.

By: Huichan Zhao, Aftab M. Hussain, Mihai Duduta, Daniel M. Vogt, Robert J. Wood, David R. Clarke
Areas: AR/VR