Prof. Rao R. Tummala

Dr. Raj Pulugurtha


The vision of this core research area is to miniaturize RF, digital, optical, and power components from today’s milliscale to microscale initially, and to nanoscale in the long run with improved electrical properties and reduced size thus leading to milli to mega-functional SOP –based systems.

Figure 1: Nanoscale components research in PRC.


Power Supply Capacitors
The objectives of this project are: 1.) Enhance the capacitance density by 5-10X with novel nanostructured electrodes and conformal dielectrics while retaining low- leakage currents at higher voltages . 2.)Enable noise-free power supply for terabit data transmission in the 3D packages and systems with CMOS and package- compatible high dielectric constant thin film capacitors with low impedance over GHz frequency.

Figure 2: Roadmap for power supply capacitors.

Power Supply Inductors
The objective of this research is 10-100X reduction in inductor size with low-cost organic, glass or silicon- compatible magnetic nanocomposite layers or nanostructures while retaining their high Q for energy efficiency.

Figure 3: PRC Stratgey for Nano-magnetic inductors for lower losses with higher magnetization.

RF Components
The objective of this research is to: 1.)Achieve 10-50X enhancement in permittivity compared to today’s organic dielectrics with low loss, high-frequency stability and low- temperature coefficient of capacitance (TCC) and to 2.) Integrate such materials as thin films using large-area low-cost build-up processes for miniaturized RF components.

Figure 4:PRC Strategy for RF dielectrics.

RF Magnetodielectrics
The objective of this research is to enhance high-frequency magnetic properties in low loss dielectrics for miniaturizing components such as antennas.

Figure 5: High-frequency magnetic materials for RF.

EMI Isolation structures
The objective of this research is to explore and develop vertical and horizontal EMI isolation structures for mixed signal integration.

Figure 6: PRC’s focus in EMI Isolation for mixed-signal systems.

The objective of this research to enhance energy densities in batteries by 10X by with nano-structured three-dimensional (3-D) electrodes and conformal thin electrolytes that have minimal resistance to charge and mass transport.


1. Embedded Thin-Film Passive Components (ETPC)


1. P. Markondeya Raj, Baik-woo Lee, Devarajan Balaraman, Nam-Kee Kang, Michael J Lance, Harry Meyer and Rao Tummala, Hydrothermal barium titanate thin-film characteristics and their suitability as decoupling capacitors, Journal of American Ceramic Society, May 2010.
2. Jin-Hyun Hwang, P. Markondeya Raj, Isaac Robin Abothu, Chong Yoon, Mahadevan Iyer, Hyung-Mi Jung, Jong-Kuk Hong and Rao Tummala, “Temperature dependence of the dielectric properties of polymer composite based RF capacitors”, Journal of Microelectronic Engineering, Microelectronic Engineering Volume 85, Issue 3, Pages 553-558, March 2008.
3. P. Markondeya Raj, Devarajan Balaraman, Vinu Govind, Lixi Wan, Rosario Gerhardt, Isaac Robin Abothu, Swapan Bhattacharya, Madhavan Swaminathan and Rao Tummala, “Processing and Properties of Nanocomposite Thin Film “Supercapacitors” for High Frequency Embedded Decoupling” , IEEE CPMT Transactions on Components and Packaging Technologies, Volume 30, Issue 4, Dec. 2007 Page(s):569 - 578.


1. Ferroelectrics and ferromagnetics for noise isolation in integrated circuits, packaging, and system architectures, US Patent application filed in July 2008.
2. High density capacitorss, US Patent application filed in October 2008.
3. High-k 3D capacitors, , US patent applications in august 2006.