Garmire D. – TechConnect Briefs

Charge Amplification of a Graphene-integrated-CMOS (GIC) RF Detector

Ordonez R.C., Hayashi C., Kamin N., de Andrade M.C., Garmire D., University of Hawaii at Manoa, US

A novel approach is demonstrated to characterize the charge amplification of mono-layered graphene as an integral part of a Complementary Metal Oxide Semiconductor Device (CMOS) under RF radiation. We have verified that charge carriers generated [...]

Infrared Sensor Interference Isolation for Low-Cost Three-Dimensional Anemometers

Hirano J., Garmire D., University of Hawaii at Manoa, US

The further integration of wind power generation into our power grids from residential and industrial building installations increases the need to gather high spatial resolution wind data. This results in a need for low-cost three-dimensional [...]

Self-Sufficient Smart-Grid Sensor Nodes and Architecture

Carland J., Oberbeck A., Umeda M., Cumming J., Wilkey T., Fripp M., Kuh A., Garmire D., University of Hawaii at Manoa, US

Energy systems of the future will be flexible and adaptive, capable of maximizing efficiency through sensing and predicting environmental and load conditions to effectively supply the right amount of power and mitigate grid issues. We [...]

Infrared Sensor Interference Isolation for Low-Cost Three-Dimensional Anemometers

Hirano J., Garmire D., University of Hawaii at Manoa, US

The further integration of wind power generation into our power grids from residential and industrial building installations increases the need to gather high spatial resolution wind data. This results in a need for low-cost three-dimensional [...]

Self-Sustaining Meteorological Wireless Sensor Networks

Carland J., Oberbeck A., Umeda M., Cumming J., Wilkey T., Fripp M., Kuh A., Garmire D., University of Hawaii at Manoa, US

Existing electrical grid infrastructure designs cannot reliably handle large intermittent power production fluctuations. Providing an autonomous, self-powered, and easily deployable meteorological sensor network can provide the tools to help mitigate this issue. With proper data [...]

Low-cost 3D Wind Anemometers for Architectural Wind Modeling and Prediction

Hirano J., Garmire D., University of Hawaii at Manoa, US

As wind power generation becomes more popular especially in urban areas, it becomes important to understand wind flow on a small scale accounting for the effects of building topology and neighboring buildings for wind-energy availability. [...]

Experimental study of solar spectrum impact on solar cells

Song X., Miller E.L., Garmire D., University of Hawaii at Manoa, US

Variations in solar spectrum can lead to changes in the performance and efficiency of solar cells, which operate at peak efficiency only over a relatively narrow band of the spectrum. Similarly heat absorbed by solar [...]

Experimental study of solar spectrum impact on solar cells

Song X., Miller E.L., Garmire D., University of Hawaii at Manoa, US

Variations in solar spectrum can lead to changes in the performance and efficiency of solar cells, which operate at peak efficiency only over a relatively narrow band of the spectrum. Similarly heat absorbed by solar [...]

Carbon Nanotube Array Sensor for MEMS Lab-on-a-chip

Joseph L.B., Veedu V., Garmire D., Oceanit and University of Hawaii, US

Lab-on-a-chip devices have the potential to provide point-of-care diagnostics that can save many thousands of lives per year. One of the primary limitations to wide-spread adoption of lab-on-a-chips is the excessive cost of fabrication and [...]

MEMS Process Characterization with an on-Chip Device

Garmire D., Choo H., Muller R.S., Govindjee S., Demmel J., UC-Berkeley, US

We have developed a CMOS-compatible, compact device and a simple procedure for measuring three important fabrication characteristics of planar-processed microelectromechanical (MEMS) structures: in-plane over- or under-cut, Young’s Modulus, and comb-drive forces in a MEMS process. [...]