Researchers Speak at American Chemical Society Meeting

With more than 164,000 members, the American Chemical Society (ACS) is one of the world’s largest scientific societies and one of the world’s leading sources of authoritative scientific information. A nonprofit organization, chartered by Congress, ACS is at the forefront of the evolving worldwide chemical enterprise and the premier professional home for chemists, chemical engineers and related professions around the globe.

ACS is committed to “Improving people’s lives through the transforming power of chemistry.”  This vision is “to advance the broader chemistry enterprise and its practitioners for the benefit of Earth and its people.” Together, these two statements represent our ultimate reason for being and provide a strategic framework for our efforts.

ACS supports two national meeting and expositions annually, one in the spring and one in the fall.  The 245th ACS National Meeting in Exhibition will take place April 7-11, 2013 in New Orleans, Louisiana.  A number of GE researchers (both at the research center and at the various businesses) will attend this meeting to hear the newest developments in their field of study.

Three of my colleagues will be giving talks at this meeting.  See below to learn more about them, meet their research teams, and hear a bit about the talk they’ll be giving next week.

Robert Perry will be presenting a paper entitled “Progress using Aminosilicones for CO2 Capture,” at the CO2 Capture, Sequestration, Conversion and Utilization Symposium. Global concern over rising levels of CO2 in the atmosphere and its implication in global warming has spawned numerous efforts aimed at mitigating greenhouse gas emissions. Over the past 4 years, we have focused our efforts on 2 methods for more energy efficient post-combustion capture of CO2. Both processes use novel amino-silicone solvents and early lab and bench-scale experiments have indicated that energy savings of 25-35% could be realized over that of conventional aqueous-based amine capture technology. If carbon capture is incorporated into power generating facilities (especially coal-fired plants) two advantages would be realized. First, more of the energy that the plant produces will be delivered to the customer as electricity rather than being used to remove CO2; thus keeping electrical rates lower than might otherwise be seen. Second, the power plant emissions would be cleaner and better for the environment.

This is a 4-day symposium focused on the chemistry and technology being used for absorbing CO2 from anthropogenic sources as well as use of the captured CO2.  The paper will be given on Wednesday, April 10th at 11:30 am in the Morial Convention Center, Room 219.

Bob obtained his Ph.D. in organic chemistry in 1985 from Colorado State University and then spent 10 years at Eastman Kodak working in the areas of new polymerization chemistries. He then moved to GE Silicones and during 9 years, worked in and managed the Americas Fluids Group, which developed products for personal care, the textile industry and oil and gas refining. In 2004, he moved to GE’s Global Research Center. His research has spanned from materials for holographic storage to fuel additives to tire chemistry and most recently carbon capture.

The GE Global Research CO2 Capture Team
The GE Global Research CO2 Capture Team

Radislav Potyrailo will be presenting an invited talk entitled “Toward rapid detection of biological particles using multivariable resonant label-free biosensors” at the Remotely Controlled Colloids and Interfaces Symposium.

In this talk, Radislav will discuss the results of the recent collaboration with Prof. David Sinton from the University of Toronto on the development of biosensors with significantly improved selectivity and reduced response time. While significant achievements in transducers for biosensing have resulted in demonstrations of single molecule and single particle detection limits, these advances were demonstrated in pristine buffer conditions, often without interferences.  Further, with the reduction of concentrations of biological molecules and biological particles, their diffusive transport to micro- and nano-sensors can easily take long time scales of days and even months, signifying the arrival to the limits of practical measurements.

In this study, the team of GE Global Research and University of Toronto applies GE’s earlier developed multivariable resonant sensors for detection of biological particles in fluids. The operation principle of our developed multivariable resonant sensors is based on measurements of the resonance impedance spectra of the resonator followed by the multivariate analysis of the resulting sensor response.  Two examples of our developed devices are illustrated below.  One of the key aspects of our developed transducers is the ability to reject interferences from the samples that contain species besides our target analyte particles. The design principles of the transducers will be discussed that include (1) designs of the transducers to enhance the sensitivity toward the analyte particles and (2) designs of the sensing region to reduce the diffusion time of biological species to the transducer surface and thus, reduce the time requested for biological detection. Such new developments in biosensors should provide the real-time information about the level of biological contaminants and improve the quality and safety of the resulting products.

Selected examples of GE-developed multivariable resonant sensors operating in the radiofrequency range (left) and microwave frequency range (right).
Selected examples of GE-developed multivariable resonant sensors operating in the radiofrequency range (left) and microwave frequency range (right).

VIn3-300x297Radislav obtained an Optoelectronics degree from Kiev Polytechnic Institute, Ukraine, and a Ph.D. in Analytical Chemistry from Indiana University, Bloomington, IN. He is a Principal Scientist at GE Global Research Center and SPIE Fellow with his research interests that include microanalytical instrumentation, functional nanomaterials, bioinspired photonics, and wireless sensors.  Radislav has over 150 publications and over 75 granted US Patents. He serves as an editor of the Springer book series Integrated Analytical Systems, Consulting Editor of ACS Combinatorial Science, and Editorial Board Member of Sensors. Most recent awards include 2010 Prism Award for photonics innovation by SPIE and Photonics Media and 2012 Blodgett Award by GE Global Research for outstanding technical achievements.

This is a four-day symposium is focused on methodologies for control of biological systems and bio-interfaces and has been organized by Prof. Sergiy Minko (Department of Chemistry and Biomolecular Science, Clarkson University), Prof. Igor Luzinov (School of Materials Science and Engineering, Clemson University), and Prof.  Gleb Sukhorukov (School of Engineering and Materials Science, Queen Mary University of London).  The paper will be given on Tuesday, April 09, from 10:25 am to 10:50 am in New Orleans Marriott, Room: Studio 10.

Peter Perez-Diaz will be presenting a paper entitled “Combustion of Heavy Fuel Oil” at the 10th International Symposium on Heavy Oil Upgrading, Production and Characterization, which provides an update on the progress of a research program led by Soumya Gudiyella and Ashwin Raman at the Combustion and Kinetics Laboratory in Bangalore, India. The paper will be presented on Wednesday, April 8th at 3:40 pm in the Morial Convention Center, Room 231.

Heavy fuel oils (HFO) are used in marine engines for transportation and in industrial gas turbines and boilers for power generation. Due to the complex nature of HFO, the combustion of HFO was studied using a surrogate-based approach. The surrogate fuel for HFO emulates the composition of the fuel during de-volatilization phase and is comprised of a few surrogate fuel components. The surrogate-based methodology provided a paradigm shift in the approach towards modeling liquid fuel combustion using CFD. We moved from traditional single step kinetics approach to using detailed kinetics. Adapting this methodology will result in better emissions predictions over wide range of conditions and thereby result in better combustor designs.

Vin10Peter Perez-Diaz obtained a Chemistry degree from the Central University of Venezuela and a Ph.D. in Fuel Science from Pennsylvania State University in 2010, after which he joined GE Global Research. Before attending Penn State, Peter worked for about 5 years in Intevep, the Research and Development Center of Petroleos de Venezuela (PDVSA), where he worked on projects involving fuel quality and formulation, technical assistance to the refining sector and development of new products for the domestic market.

Vin4Soumya Gudiyella obtained her Ph.D. in Chemical Engineering from University of Illinois at Chicago in the area of jet-fuel combustion in May 2012. Soumya joined the GE Global Research Center in Bangalore as a Research Engineer in Combustion and Kinetics Lab in June 2012. Her major area is chemical kinetics and she has developed a reduced mechanism for HFO combustion, which can predict different combustion and emission characteristics when HFO in burned in GE gas turbines.

Vin5Ashwin Raman obtained his Ph.D. in Chemical Engineering from University of Illinios at Chicago in May 2008. He is a Lead Engineer at GE Global Research Center in Bangalore in Combustion and Kinetics Lab. He has been developing high fidelity reduced chemical kinetic mechanisms for conventional and unconventional fuels, which would be used in GE’s Gas Turbine and Reciprocating engine combustor designs and aid in developing future combustors with lower emissions and higher  efficiency.

If you happen to attend the meeting, be sure to talk with the above researchers in person!  You may also post comments and/or questions below. Looking forward to hearing from you and stay tuned for a post with our takeaways from the meeting!

– Vin


2 Comments

  1. Janet

    Kul mysterium! Min första tanke gÃ¥r till Clos de la Dioterie. Hallon – check, röda & svarta vinbär – check, bark – jovars eller i alla fall gaerrgui/trä eller liknande, strÃ¥lande fruktsyra – dubbelcheck, mineral – check. Ã…rgÃ¥ng 2001 är rätt silkig och drickvänlig men har inte börjat uppvisa sÃ¥ mycket tertiärt i snoken än…

  2. Shaila

    Hi. I work in CFD, could you please give me the contact for either Mr.Ashwin Raman or Soumya? I am from Hyderabad, India