Materials Characterization & Imaging – Page 12

Effect of Film Thickness of an Insulating Material on Electrical Property Characterization and Edge Effects

Patel S.V., Gerhardt R.A., Georgia Institute of Technology, US

Insulating films such as silicon dioxide (SiO₂) have a variety of microelectronic applications because of the compound's insulating and dielectric properties. When measuring the electrical properties of a metal oxide film like silicon oxide, it [...]

Nanocharacterization Studies on Surface Modified Nanoporous Gold Films for Sensor Applications

Joshi M., Swastic S., Vemula J.K., Priydarshi K., Deshpande A., Ramanan S.R., Krishnan J.N., BITS Pilani, K. K. Birla Goa Campus, IN

Nano porous gold film is fabricated by electroless plating with Potassium Gold Cyanide as plating solution. E-beam deposited Cu substrates are chosen for plating experiments. SEM studies revealed the pore size to be 100+20 nm [...]

Optical Fluorescence Microscopy for Spatially Characterizing Electron Transfer across a Solid-Liquid Interface on Heterogeneous Electrodes

Choudhary E., National Institute of Standards and Technology, US

Heterogeneous catalytic materials and electrodes are used for (electro)chemical transformations, including those important for energy storage and utilization. Due to the heterogeneous nature of these materials, activity measurements with sufficient spatial resolution are needed to [...]

Nanoscale Materials Characterization

Energy and Charge Transfer between Quasi-zero-dimensional Nanostructures

Kral K., Mensik M., Institute of Physics, Academy of Sciences of Czech Republic, CZ

Theory is presented of the electronic excitation and electronic charge transfer between quantum dots. Kinetic equations describing this irreversible transfer are developed using quantum transport approach. The non-adiabatic property of the electron coupling to the [...]

Assessing chemical agent decontamination efficacy of a nanostructured fabric using headspace and split/splitless injection gas chromatography and mass spectrometry (GC-MS)

La Favors J.C., Baird L.M., Lippa T.P., The Johns Hopkins University Applied Physics Laboratory, US

Development of a multifunctional decontamination system embedded with nanoparticles for select agent capture and degradation upon UV exposure. Degradation products and decrease in agent concentrations evaluated by GC-MS.

First-Order-Reversal-Curve Analysis of Nano-composite Permanent Magnets

Dodrill B.C., Lake Shore Cryotronics, US

Rare-earth and ferrite permanent magnet materials are indispensable elements in many electronic devices such as electrical motors, hybrid vehicles, portable communications devices, speakers, sensors, etc. Owing to the decreased availability of, and increasing cost of [...]

Imaging and Analysis at the Harvard University Center for Nanoscale Systems

Magyar A., Harvard University, US

University-based shared experimental facilities are tremendous assets, serving the local academic needs as well as providing access to equipment and expertise for neighboring companies, both small and large. Properly managed, such a facility can serve [...]

Raman Spectroscopic Characterization of Carbon Nanotubes & Tungsten Oxide of Relevance to Energy Storage and Gas Sensing Applications

Misra P., Casimir D., Garcia-Sanchez R., Baliga S., Howard University, US

The characterization of graphitic and metal oxide nanomaterials through the use of Resonant Raman Spectroscopy at multiple laser excitations is the primary aim of this research. Raman spectroscopic techniques can help characterize the vibrational phonon [...]

Fabrication of Electroless Plated Nano Porous Gold Film for Trace Heavy Metal Ion Detection In Sensor Applications

Bhagavathula S., Ramanan S.R., Kim S.K., Krishnan J.N., BITS Pilani, K. K. Birla Goa Campus, IN

Nano porous gold film was fabricated by electroless plating with Potassium Gold Cyanide as plating solution. E-beam deposited Cu substrates were chosen for plating. The electroless plated gold was investigated through XRD and SEM. SEM [...]