US – Page 225 – TechConnect Briefs

Concentration Tuned Interactions and Structures in One Gradient AC Electric Field

Qiu Z., Tada S., Shen Y., City University of New York, US

External field-controlled particle structure growth is an active area in micron- or nano- material assembly. We will present preliminary experimental results about how to use particle concentration to tune interactions and structures in one gradient [...]

Engineered Nanostructures for High Thermal Conductivity Substrates

Varanasi K.K., Chamarthy P., Chauhan S., de Bock P., Kulkarni A., Mandrusiak G., Rush B., Russ B., Denault L., Weaver S., Gerner F., Leland Q., Yerkes K., Massachusetts Institute of Technology, US

In the DARPA Thermal Ground Plane (TGP) program, GE and its partners, the University of Cincinnati and the Air Force Research Laboratory, are developing a new thermal technology that will enable a monumental thermal technological [...]

Curvilinear Waveforms for Fluid Dispensing

Clark J., Zebra Technologies, US

Piezoelectric micropipettes, a type of drop -on-demand ink jet microdispenser, are typically driven by repetitively pulsed waveforms to cause fluid ejection through a small orifice. To study the effect of drive waveform shape on drop [...]

From Electrical to Fuel Powered Artificial Muscles

Kozlov M.E., Oh J., Mirfakhrai T., Zhang M., Fang S., Ferraris J.P., Madden J.D.W., Baughman R.H., University of Texas at Dallas, US

A number of materials ranging from carbon nanotube yarns and sheets to shape memory alloys (SMA) have been explored for the application in the area of artificial muscles (actuators). It was found that if powered [...]

Nanotube Grafting in Porous Solids for High Surface Devices

Mukhopadhyay S.M., Karumuri A., Barney I.T., Wright State University, US

Biological systems make use of hair and capillary type hierarchical structures to create more surface area in limited space, but very few synthetic materials use this concept. Geometrical calculations show that if hierarchical substrates are [...]

Preparation and Electrochemical Characterization of Porous SWNT-PPy Nanocomposite Sheets for Supercapacitor Applications

Oh J., Kozlov M.E., Baughman R.H., University of Texas at Dallas, US

Highly porous sheets comprised of Single Walled Carbon Nanotubes and doped polypyrrole (SWNT-PPy) were prepared by vacuum filtration of SWNT-PPy methanol dispersions. The employed preparation procedure is an extension of conventional bucky-paper fabrication method for [...]

Carbon nanotube-reinforced epoxy nanocomposites for mechanical property improvement

Mao D., Yaniv Z., Fink R., Johnson L., Applied Nanotech, Inc., US

Through proper functionalization of the surface of CNTs, covalent bonds can be formed with the epoxy matrix. In addition, by breaking the van de waals force, CNTs can be well dispersed in the epoxy matrix [...]

Controlled growth and electrical characterization of bent single-walled carbon nanotubes

Huang J., Choi W.B., Florida International University, US

The unique electrical and mechanical properties of single-walled carbon nanotubes (SWNTs) make them one of the most promising candidates for next generation nanoelectronics. However, synthesis of complex geometries for as-grown SWNTs still remains a challenging [...]

Graduate Programs on Nanotechnology in Pharmaceutical Sciences

Pathak Y.V., Sullivan University College of Pharmacy, US

Nanotechnology is a multidisciplinary field of discovery. Scientists working in many disciplines including physics, chemistry, material sciences, electrical engineering, electronics, computer sciences, biosciences and pharmaceutical sciences are contributing significantly to the development of nanotechnology at [...]

Simulation of Droplet Based Microfluidics Devices using a Volume of Fluid (VOF) Approach

Chandorkar A., Palit S., Flow Science, US

This paper demonstrates that CFD simulations can be used to study important physical phenomena in Droplet based Microfluidics Devices. The Volume of Fluid (TruVOFTM) method in FLOW-3D® (a general purpose CFD software) has been used [...]