Oregon Nanoscience & Microtechnologies Institute

Structure-property relationships in Pd/Polycarbonate based chemical sensors

Atre S.V., Valmikanathan O.P., Meka D.B., Prasad S., Oregon Nanoscience & Microtechnologies Institute, US

The effects of nanparticle surface chemistry, size, concentration and distribution on the properties of Pd/polycarbonate nanocomposites was investigated. Interesting trends in electrical conductivity and thermal stability of the nanomposites were identified. These trends were used [...]

Ceramic Microarrays for Aggressive Environments

Atre S.V., Wu C., Simmons K.L., Laddha S., Jain K., Lee S., Park S-J, German R.M., Oregon Nanoscience & Microtechnologies Institute, US

The effect of particle characteristics and polymer rheology on the fabrication of sintered ceramic microarrays using powder injection modling is examined. The impact of material composition on microfeature resolution and defect avoidance during processing was [...]

Structure-property relationships in Pd/Polycarbonate based chemical sensors

Atre S.V., Valmikanathan O.P., Meka D.B., Prasad S., Oregon Nanoscience & Microtechnologies Institute, US

The effects of nanparticle surface chemistry, size, concentration and distribution on the properties of Pd/polycarbonate nanocomposites was investigated. Interesting trends in electrical conductivity and thermal stability of the nanomposites were identified. These trends were used [...]

Fabrication and optical properties of nanoscale arrays of Au and Pd in polymers

Atre S.V., Bhowmik S., Valmikanathan O.P., Ostroverkhova O., Oregon Nanoscience & Microtechnologies Institute, US

We report the fabrication of regular repeat structures of Au and Pd square islands embedded in polymethyl methacrylate (PMMA) and polycarbonate (PC). Using focussed ion beam (FIB), square islands were machined over a 5 micron [...]

Densification and Grain Growth During the Sintering of Nanoscale SiC

Bothara M., Park S-J, German R.M., Sudarshan T.S., Radhakrishnan R., Atre S.V., Oregon Nanoscience & Microtechnologies Institute, US

Numerous routes have been developed recently for the synthesis of a broad range of ceramic and metal nanoparticles. However, applications for these new materials have lagged behind owing to a limited understanding of processing methods [...]

Design, Fabrication & Testing of a Ceramic Microreactor for Nanoparticle Synthesis

Jain K., Wu C., Atre S., Kimura S., Jovanovic G., Sprenkle V., Canfield N., Narayanan V., Roy S., Oregon Nanoscience & Microtechnologies Institute, US

Nanoscale ceramic powders offer attractive prospects as building blocks for various high performance applications due to their excellent mechanical, thermal, dielectric and corrosion properties. Despite the availability of a plethora of nanoparticle synthesis processes the [...]

Design & Fabrication of Ceramic Microarrays Using Powder Injection Molding

Atre S.V., Wu C., Park S-J, Simmons K., Oregon Nanoscience & Microtechnologies Institute, US

Microsystem technology has propelled the development of micro and multi-scale manufacturing techniques for more than a decade. Among these techniques, micro powder injection molding is drawing attention recently as one of the most cost-effective processes [...]

The Effect of Nanoparticle Distribution on The Structure and Properties of Palladium/Polycarbonate Nanocomposites

Atre S.V., Valmikanathan O.P., Pillai V.K., Mulla I.S., Ostroverkhova O., Oregon Nanoscience & Microtechnologies Institute, US

We report the synthesis of palladium (Pd)/polycarbonate (PC) nanocomposites as well as their morphological, thermal, optical and electrical properties. Pd nanoclusters were produced by the reduction of palladium chloride using a variation of the Brust’s [...]