CA – Page 16 – TechConnect Briefs

Multiplexed Localization in Bi-Layer Digital Microfluidic Systems

Abolhasani M., Devlin K.D., Najjaran H., Hoorfar M., Holzman J.F., The University of British Columbia Okanagan, CA

This paper reports a novel system-level design for digital microfluidic (DMF) devices. A DMF multiplexer structure based on a cross-referencing architecture is presented. The design makes use of bi-polar voltage activation and threshold effects to [...]

Biomolecular Adsorption Phenomena in Electrowetting-Based Digital Microfluidic Devices

Ahmadi A., Devlin K.D., Najjaran H., Holzman J.F., Hoorfar M., University of British Columbia, CA

Digital microfluidic lab-on-a-chip technology has been a new trend in miniaturizing biomedical platforms. However, nonspecific adsorption of these biomolecules has proven to be one the greatest sources of uncertainties for these biofluidic chips. Unwanted adsorption [...]

Vapor-assisted bonding of poly(dimethylsiloxane) and silicon-based substrates

Sofla A.Y.N., Martin C., University of Toronto, CA

We present a novel method to reliably bond PDMS to glass, Si, SiO2 and PDMS. In this vapor-assisted method the surface of the PDMS is first brought into contact with the substrate. The PDMS-substrate structure [...]

Slip boundary conditions in nanofluidics from the molecular theory of solvation

Kobryn A.E., Kovalenko A., National Institute for Nanotechnology, CA

We propose the first-ever derivation and calculation of the hydrodynamic slip length from the first principles of statistical mechanics, based on a combination of linear response theory and equilibrium molecular theory of solvation. The slip [...]

Maskless Lithography Using Patterned Amorphous Silicon Layer Induced by Femtosecond Laser Irradiation

Kiani A., Venkatakrishnan K., Tan B., Ryerson University, CA

In this research, we reported a maskless lithography method by a combination of laser amorphization of silicon and wet alkaline etching. This technique can lead to a promising solution for maskless lithography because in comparison [...]

Deposition of Interwoven Fibrous Nanostructure using Ultrafast Laser Ablation in Ambient Condition

Tavangar A., Tan B., Venkatakrishan K., Ryerson University, CA

In this paper, a new method for site-specific deposition of fibrous nanostructure is demonstrated using laser induced reverse transfer (LIRT). The LIRT method makes it achievable to generate and deposit fibrous nanostructure of a wide [...]

Environmental Friendly Synthesis of Polypyrrole within polymeric Nanotemplates-mechanism of polypyrrole synthesis

Li X., Chan A., Groves M., Malardier-Jugroot C., Royal Military College of Canada, CA

This paper describes an innovative way to synthesize polypyrrole using self-assembly nano-templates poly (isobutylene-alt-maleic anhydride) (IMA) or poly (styrene-alt-maleic anhydride) (SMA). Understanding the details of the novel synthesis in great details would provide us profound [...]

Preparation of nickel doped multi-functional micro-patternable polydimethylsiloxane nanocomposite polymer with characterization of its magnetic, electrical and mechanical properties for soft MEMS/Lab on a chip applications

Khosla A., Korand J.L., Haiducu M., Gray B.L., Leznoff D.B., Parameswaran M., Simon Fraser University, CA

We present the preparation and characterization of a novel polydimethylsiloxane (PDMS) multifunctional nanocomposite with electric and magnetic properties. The composite is fabricated by ultrasonic agitation of nickel nanoparticles in the PDMS matrix. The prepared nanocomposite [...]

Polymer nanoparticles as nanoformulation agents

Pham H., Li F., Goh J.B., Dinglasan J., Anderson D., Vive Nano, Inc., CA

An approach to produce polymer nanoparticles with tailored characteristics to accommodate different nanoformulation applications is presented. Polymer nanoparticles are made from the collapse of polyelectrolytes in the presence of counterions and/or different solvents. The size, [...]

Multifunctional Nanocomposite Systems

Das A., Dinglasan J., Loukine N., Anderson D., Vive Nano, CA

A method to produce multifunctional nanocomposite materials is presented. Polymer stabilized nanoparticles (e.g. hydroxides, oxides, metals, salts, etc.) are incorporated into a bulk inorganic matrix (zinc oxide/hydroxide, aluminum oxide/hydroxide, ferric oxide, silica, ceria, etc) through [...]