Condensed Matter & Surface Sciences





Ohio University



Developing Nanoparticle Sensors for Analytical Chemistry



Nanoparticles provide a versatile platform for studying problems of interest to analytical chemistry, particularly in regards to detecting analytes at low (i.e. down to single-molecule) concentrations. Gold nanospheres are well known for exhibiting strong optical properties in the visible range that can be exploited for imaging and sensing in complex solutions, but nano-analytical chemistry does not need to restrict itself to gold or to nanospheres. Surface functionalization of nanoparticles is another crucial aspect in designing nanoparticle sensing systems. However, surface functionalization is not a trivial process. Finally, bulk scale nanoparticle detection has been shown to be useful in detecting low concentrations of analytes, but it is not very useful for field applications. Single particle sensors would be more amenable for field-based sensing, but they also face a number of different engineering challenges than for bulk methods. In this talk, I will provide an overview of my experience working in single-particle research, as well as discuss my plans for using nanoparticle probes to tackle several age-old detection problems in analytical chemistry.





Thursday, September 14, 2017

4:10 p.m. -- Walter Lecture Hall 245