Woodruff School of Mechanical Engineering
Faculty Candidate Seminar
Bio-integrated and Bio-inspired Electronics Demonstrated by Flexible, Stretchable, and Dissolvable Devices
Dr. Xian Huang
University of Illinois at Urbana-Champaign
Monday, February 25, 2013 at 3:00:00 PM
MRDC Building, Room 4211
Bio-integrated and bio-inspired electronics represents a type of devices and systems with designed features that are inspired by the nature of biology and can be integrated with biological tissue in effective and harmless manners. However, Differences in mechanics and forms between hard, planar devices based on semiconductor wafer and soft, curvilinear tissue of biological systems lead to low-fidelity coupling at the biotic/abiotic interface and limited long-term tissue health. The challenges associated with the mismatch between biological tissues and rigid devices can be overcome using flexible, stretchable, and bio-dissolvable devices. This talk introduces Dr. Huang’s work in developing bio-integrated and bio-inspired devices and their underlying physics. These devices are based on ultrathin electronic components integrated on elastic or bio-dissolvable substrates. While possessing excellent performance that is comparable with the state-of-the-art, wafer-based systems, these devices offer favorable mechanics for implantation and epidermal integration. The use of these devices is illustrated in bio-integrated, skin-like epidermal electronics and bio-resolvable, transient electronics with capabilities for differential measurement, signal mapping, wireless sensing, and controllable dissolution. Applications of the devices in continuous health/wellness monitoring are demonstrated by measurement of biophysical parameters (hydration, bio-potential, and strain) on skin, epidermal or transient radio frequency (RF) power harvesting, and radio signal generation. In addition, results of systematical studies in skin impedance at various frequencies and electrode geometry as well as the influence of skin dielectric to the performance of various electric components (coil, antenna, capacitor, diodes, etc.) in the RF range for RF power harvesting are also presented. The technology presented in this talk, when combined with various classes of sensors in a single system, has the potential in providing valuable, wide-ranging applications in human healthcare and wellness evaluation via quantitative measurement.
Dr. Xian Huang is currently a postdoctoral associate in Prof. John A. Rogers’ group at the University of Illinois at Urbana-Champaign (UIUC). He graduated with a Ph.D. degree in Mechanical Engineering from Columbia University under the instruction of Prof. Qiao Lin in 2011. He received his B.S. and M.S. degrees in Measurement & Control Technology and Instrument from Tianjin University, Tianjin, China in 2004 and 2007, respectively. In UIUC, he is working on developing epidermal and transient electronics for biophysical signal detection, wireless power harvesting, and wireless sensing. During his Ph.D. study, he focused on developing implantable miniaturized affinity sensors for glucose monitoring and micro-lenses for biological imaging. In 2011, he received gold prize in student research award from Diabetes Technology Society for his innovative work in developing implantable affinity glucose sensors for diabetes management. He also won best student paper award in the IEEE International Conference on Nano/Micro Engineered and Molecular Systems in 2009.
Refreshments will be served.