Search Results - "Hovden, R."

Electron overflow of AlGaN deep ultraviolet light emitting diodes by Pandey, A., Gim, J., Hovden, R., Mi, Z.

“…We have studied the design, epitaxy, and performance characteristics of deep ultraviolet (UV) AlGaN light emitting diodes (LEDs). By combining the tunnel…”
Get full text

An AlGaN tunnel junction light emitting diode operating at 255 nm by Pandey, A., Gim, J., Hovden, R., Mi, Z.

“…We report on the demonstration of high-performance tunnel junction deep ultraviolet (UV) light-emitting diodes (LEDs) by using plasma-assisted molecular beam…”
Get full text

Engineering new limits to magnetostriction through metastability in iron-gallium alloys by Meisenheimer, P. B., Steinhardt, R. A., Sung, S. H., Williams, L. D., Zhuang, S., Nowakowski, M. E., Novakov, S., Torunbalci, M. M., Prasad, B., Zollner, C. J., Wang, Z., Dawley, N. M., Schubert, J., Hunter, A. H., Manipatruni, S., Nikonov, D. E., Young, I. A., Chen, L. Q., Bokor, J., Bhave, S. A., Ramesh, R., Hu, J.-M., Kioupakis, E., Hovden, R., Schlom, D. G., Heron, J. T.

“…Magnetostrictive materials transduce magnetic and mechanical energies and when combined with piezoelectric elements, evoke magnetoelectric transduction for…”
Get full text

On the Origin of Efficiency Droop of AlGaN Deep Ultraviolet Light Emitting Diodes by Pandey, A., Aiello, A., Gim, J., Hovden, R., Kioupakis, E., Bhattacharya, P., Mi, Z.

“…The causes for the efficiency droop of AlGaN UV LEDs will be investigated. Auger recombination coefficients of AlGaN multiple quantum wells with different Al…”
Get full text

High-Efficiency AlGaN Tunnel Junction Deep Ultraviolet LEDs Operating at 265 nm by Pandey, A., Shin, W., Gim, J., Hovden, R., Mi, Z.

“…Tunnel-injected deep ultraviolet LEDs using a ~2.5 nm GaN tunnel junction, with emission peak at 265 nm have been demonstrated with a maximum external quantum…”
Get full text

Three-Dimensional Tracking and Visualization of Hundreds of Pt-Co Fuel Cell Nanocatalysts during Electrochemical Aging by Yu, Y, Xin, H L, Hovden, R, Wang, D, Rus, E D, Mundy, J A, Muller, D A, Abruna, H D

“…A 3D tomographic method for tracking the trajectories and morphological changes of individual Pt-Co nanocatalyst particles on a fuel cell C support, before and…”
Get full text

Weight and cost estimation for spaceborne radar systems by Herbig, W.P., Hovanessian, S.A., Hovden, R.E., Lang, T.J.

“…A simplified method is presented for making preliminary weight and cost estimates of spaceborne radar satellites and constellations for the detection of…”
Get full text

Deep Space Network Scheduling Using Evolutionary Computational Methods by Guillaume, A., Seugnwon Lee, Yeou-Fang Wang, Hua Zheng, Hovden, R., Chau, S., Yu-Wen Tung, Terrile, R.J.

“…The deep space network (DSN) is an international network of antennas that supports all of NASA's deep space missions. With the increasing demand of tracking…”
Get full text

Structure and Control of Charge Density Waves in Two-Dimensional 1T-TaS2 by Tsen, A. W, Hovden, R, Wang, D. Z, Kim, Y. D, Okamoto, J, Spoth, K. A, Liu, Y, Lu, W. J, Sun, Y. P, Hone, J, Kourkoutis, L. F, Kim, P, Pasupathy, A. N

“…Proceedings of the National Academy of Sciences 112, 15054-15059 (2015) The layered transition metal dichalcogenides host a rich collection of charge density…”
Get full text