John L. Gustafson

Integrated on-chip energy storage using porous-silicon electrochemical capacitors

Integrated on-chip energy storage is increasingly important in the fields of internet of things, energy harvesting, and wearables with capacitors being ideal for devices requiring higher powers, low voltages, or many thousands of cycles. This work demonstrates electrochemical capacitors fabricated using porous Si nanostructures with very high surface-to-volume ratios and an electrolyte. Stability is achieved through ALD TiN or CVD carbon coatings. The use of Si processing methods creates the potential for on-chip energy storage.

Challenges and Future Directions of Software Technology: The Need for Explicit Programming Environments

Discussion of the future software increasingly requires a careful distinction between application-facing software and hardware-facing software. Programmers of application-facing software will increasingly have to balance speed, reliability, and accuracy as competing goals. Programmers of hardware-facing software will increasingly have to manage data placement, power consumption, and the choices presented by heterogeneous processors. By making these tradeoffs explicit for both programming environments, we will be able to overcome these challenges and potentially will discover new approaches that are not possible with presently available tools.