5 papers
Super-capacitors interfaced with quantum dots at the electrolyte/electrode interface: capacitance gain and fluorescence line-width narrowing
H. Grebel
Quantum dots (QDs), embedded in supercapacitors (S-C) cells exhibited capacitance amplification that peaked at certain QD concentration. More than 2.5 peak amplification was demons…
Linear and Nonlinear Ultra-Short Pulse Looped Antennas: Radiation and Parametric Oscillations
H. Grebel
Modern optical systems send and receive ultra-short temporal pulses (USP). While ultra-broad band antennas do exist in the microwave region (e.g., log-periodic antennas), their sho…
Managing Renewable Energy Resources Using Equity-Market Risk Tools - the Efficient Frontiers
Haim Grebel, Divya Vikas, Jim Shi
The energy market, and specifically the renewable sector carries volatility and risks, similar to the financial market. Here, we leverage on a well-established, return-risk approac…
Active-carbon based supercapacitors with Au colloids: the case for placing the colloids at the electrolyte/electrode interface
H. Grebel, Shupei Yu, Yuanwei Zhang
Supercapacitors (S-C) are short-term energy storage elements that find many applications, e.g., electronic charging devices and suppressors of power fluctuations in grids that are…
Optical cages made of graphitic frameworks
J. P. Walker, H. Grebel
In pursuit of infrared (IR) radiation absorbers, we examine quasicrystal structures made of graphite wires. An array of graphitic cages and cage-within-cage, and whose overall dime…