CAMP Annual Report: Page 11
Professor Vladimir Privman and Coworkers Have their Research Featured in the Journal CrystEngComm as the Cover Article
con't. from page 10
The researchers’ image is highlighted on the journal cover. See Figure 3. This work reports a new kinetic Monte Carlo approach to study aspects of sintering of dispersed nanoparticles of bimodal size distributions. Mechanisms of neck development when sintering is initiated at elevated temperatures (for nanosize crystalline surfaces of particles of different sizes) were explored. The role of smaller particles fitting between larger particles in the sintering of the latter was considered. Formation of stable necks bridging particles at the nanoscale was found to be governed by layering or clustering mechanisms at the facing surfaces, with clustering leading to a much faster formation of the bridging structure. Temperature, particle sizes and local arrangement, as well as other geometrical factors, were found to have a profound effect on sintering mediated by a smaller particle placed in a void between larger particles.
Figure 3: This image displays neck development as a result of sintering dispersed nanoparticles.
Clarkson University Professor Sergiy Minko (the Egon Matijevic Chair of Chemistry and Biomolecuar Science) and a team of researchers have developed a process that allows a material to become wet as usual, or to repel all liquids. These dual, opposing abilities of a material are achieved by using a magnetic field. Something that ordinarily would soak up something wet can be transformed so that no liquid (examples: water, oil or chemicals) can dampen it. This is very important from a military point of view. They can use the process to make protective clothing in the case of chemical warfare.
Major work on this development was done at Clarkson by Professor Minko (with assistance from graduate student Anton Grigoryev and Research Professor Ihor Tokarev) and at Clemson University with Professors Luzinov and Kornev. Their results have been published in the Journal of the American Chemical Society and in Advanced Functional Materials.
In addition, Professor Minko and his colleagues have teamed up for another related project that likely has important medical applications. Teams from both universities (Clarkson and Clemson) developed “smart” liquids that contain nanoparticles that can be locked into place with a magnetic field. These particles stay locked even after the magnetic field is turned off or removed. This could be a method to fight cancer, by delivering liquid medicine to tumors, and then destroying them while they are locked in place.
The research interests of Suresh Dhaniyala, Professor in Clarkson’s Department of Mechanical and Aeronautical Engineering, are in the fields of aerosol physics and instrumentation. Professor Dhaniyala and his research group have developed compact sensors for distributed aerosol measurements and high-resolution aerosol sizing instruments for fast particle size distribution measurements under challenging conditions of low concentrations and low pressures. Using these tools Professor Dhaniyala’s research group is studying low-pressure particle capture efficiency of metal filters as a function of filter properties, aerosol population characteristics in urban areas, particle removal from substrates, and particle nucleation events in the atmosphere. Funding sources for these projects include: NSF, NYSERDA, NASA, DTRA, Pall Corp, and EPA.
CAMP Professor Sulapha Peethamparan, in Clarkson University’s Department of Civil and Environmental Engineering, is carrying out research to develop sustainable infrastructure materials by alkali activation of alumino-silicate containing industrial by-products, using high volume fly ash, slag and other industrial by-products such as cement kiln dusts. She is also interested in the mechanism of portland and oil well cement hydration; the setting kinetics of cements; micro-/nano-scale characterization of cement/cementitious materials; forensic analyses of deteriorated concrete; and lime/cementitious soil stabilization. In addition, she is interested in CO2 sequestration using industrial alkaline byproducts via mineral carbonation.
CAMP’s Dr. Dana Barry Wins Honors and Serves as Visiting Professor and Speaker in Japan
Dr. Dana M. Barry
Dr. Dana M. Barry, senior technical writer and editor at Clarkson University’s Center for Advanced Materials Processing (CAMP), won her 18th consecutive APEX Award for Publication Excellence from Communications Concepts Inc. in Springfield, Va. This honor is based on editorial content and overall communications effectiveness and excellence. Her winning entry (for 2013) was the CAMP Annual Report Newsletter (2011-2012), which faired extremely well in the global competition.
Dr. Barry (who serves as Scientific Board President for Ansted University) was recognized as an official ACS Chemistry Ambassador by the American Chemical Society for her role as National Chemistry Week Coordinator. She has held this position (which helps improve and promote public appreciation of chemistry) for 10 years so far.
In addition she was invited by Osaka University to give lectures in September at their Graduate School of Engineering. While in Japan she also presented a workshop for Creative Chemistry at Mikunigaoka High School in Osaka, presented her published paper by Elsevier at an international conference in Kyushu, and served as a Visiting Professor at Suzuka National College of Technology (SNCT). Her research collaborator at SNCT is Dean Professor Hideyuki Kanematsu.