Alexa Siu. click for home.

Research

I am currently a third year PhD student at Stanford University in the shape lab, advised by Prof. Sean Follmer. My research interests are in the use of tangible interfaces to support design. In particular, I am interested in advancing accessible Making for people with visual impairments.

Through a combination of iterative prototyping and human centered design, I am developing workflows to support people with visual impairments in designing 3D models and prototyping with electronics. Through more controlled studies, I look to understand human perception to inform the design of these new interfaces.

See a complete list of my publications here.


shapeShift

Towards An Accessible CAD Workflow

Existing computer-aided design (CAD) tools that allow authoring and editing of 3D models are mostly visually reliant and limit access for people who are blind or visually impaired. We propose an accessible CAD workflow where 3D models are generated through OpenSCAD, a script-based 3D modeling tool, and rendered at interactive speeds in an actuated 2.5D shape display.

Publications: A. F. Siu, J. Miele, S. Follmer. 2018. An Accessible CAD Workflow UsingProgramming of 3D Models and Preview Rendering in A 2.5D Shape Display. In Proceedings of the 20th International ACM SIGACCESS Conference on Computers and Accessibility (ASSETS ‘18). ACM, Galway, Ireland. DOI: https://doi.org/10.1145/3234695.3240996

shapeShift

shapeShift

A compact, high-resolution mobile tabletop shape display for tangible and haptic interaction. We explore interactions enabled by 2D spatial manipulation and self-actuation of a tabletop.

Recent Publications: A. F. Siu, E. J. Gonzalez, S. Yuan, J. Ginsberg, and S. Follmer.2018. shapeShift: 2D Spatial Manipulation and Self-Actuation of Tabletop Shape Displays for Tangible and Haptic Interaction. In Proceedings of the 2018 CHI Conference on Human Factors in Computing Systems (CHI ‘18). ACM, New York, NY, USA. DOI: https://doi.org/10.1145/3173574.3173865

Investigating Tangible Collaboration for Design Towards Augmented Physical Telepresence

Exploration of shared workspaces using mixed reality physical embodiment.

Video

Publications: A. F. Siu, S. Yuan, H. Pham, E. Gonzalez, L. H. Kim, M. Le Goc, S. Follmer. (2018). Investigating Tangible Collaboration for Design Towards Augmented Physical Telepresence. In: Plattner H., Meinel C., Leifer L. (eds) Design Thinking Research. Understanding Innovation. Springer, Cham


Internship Research

HP Labs

June 2018 - September 2018
HP Labs, Palo Alto, CA
Manager: Alex Thayer, Tico Ballagas

Investigating how we might leverage 3D printed auxetic properties to design parts with embedded sensing and interactivity.

My work was posted in the HP Labs Intern Spotlight Blog. Read it here.


Undergraduate Research

This is a summary of some of the work I did throughout my undergraduate studies.


CHARM Lab

June/2014 - August/2014
Stanford University, Dept. of Mechanical Engineering
PI: Allison Okamura, PhD.

CHARM Lab Project

Characterizing the effect of time delay and low-pass filtering on human perception of stiffness and damping

Designed and programmed a user study to characterize the effect of time delay and low-pass filtering on human perception of stiffness and damping in haptic displays.

Evaluated the closed-loop accuracy in bilateral teleoperation and impedance-type kinesthetic haptic displays in terms of effective impedances.

Poster

Designed a variable stiffness and damping environment to interact with the Phantom Premium 1.5 robots in order to analyze the performance of a bilateral teleoperator.

Publications: N. Colonnese, A. F. Siu, C. M. Abbott and A. M. Okamura (2015) Rendered and Characterized Closed-loop Accuracy of Impedance-type Haptic Displays. IEEE Transactions on Haptics, 8(4):434-446.

Lam Lab

Oct/2012 - May/2015
Georgia Tech Dept. of Biomedical Engineering and Emory University School of Medicine
PI: Wilbur Lam, MD., PhD.

Lam Lab Project

Investigated the interaction of neutrophil extracellular traps (NETs) and whole blood in relation to thrombosis.

Developed a children’s educational outreach program (BME HealthReach) to implement at hospitals using the patient’s disease as a leverage to teach concepts in STEM.

Assisted in validation through clinical trials and prototyping of an anemia diagnostic device (AnemoCheck) at Children’s Healthcare of Atlanta.

Publications: E. A. Tyburski, ..., A. F. Siu, et. al. (2014). Disposable platform provides visual and color-based point-of-care anemia self-testing. The Journal of Clinical Investigation, 124(10), 4387–4394. http://doi.org/10.1172/JCI76666