Method to Improve Abrasion and Scratch Resistance in Polyurethane or Other Polymer Nanocomposites

Description
Polyurethane coatings are protecting many different structures today, such as storage tanks, oil and gas pipeline, water and wastewater, bridges, ships, and other facilities. The products have been effective because of their outstanding life expectancy and performance such as resistance to aggressively corrosive environments, high abrasion resistance, fast application, low and cold temperature curing capability […]

Polymer Nanofibers for Rapid Dewatering of Fine Tailings

Description
The main objective of tailings ponds remediation is to remove water so that a trafficable load-bearing surface can be produced within a reasonable time frame to allow subsequent reclamation. A tailings pond includes water, sand, clay and residual oil that remain after oil sands processing. Once in the pond, the sand quickly sinks to the bottom […]

Silicon Nanocrystal Optical Resonator

Description
Silicon is the principal material used in microelectronics, due in part to its low cost and high abundance. However, there are problems inherent in the miniaturization of conventional microelectronics, such as cross-talk (interference) and increased heat dissipation. To overcome these challenges and to increase the speed of computing, there is a push towards photonics, particularly […]

Gecko Inspired Adhesive Microfluidic Channels

Description
Many adhesives require a liquid component, are one time use, or leave a residue upon removal.  These issues reduce the versatility of microfluidic channels and the breadth of their applications.

 

Researchers at the University of Alberta have developed an improved micro-electromechanical manufacturing technique that can more efficiently and cost effectively create a novel dry adhesive that […]

Low Loss Meta-Material Optical Waveguides

Description
The researchers at the University of Alberta have developed a new class of optical waveguides with a meta-material cladding which enables strong confinement of energy within the waveguides making it an ideal choice for Photonic Integrated Circuits (PIC) and optical communication systems. Unlike many other existing approaches, the current approach does not suffer from propagation […]

Reduced Cost 3D Ultrasound Imaging

Description
Researchers at the University of Alberta have developed a cost-effective method for 3D ultrasound imaging that maintains image quality.

There are two traditional ways to accomplish 3D ultrasound imaging. The first method makes use of mechanically wobbled 1D arrays; however, this method has been shown to compromise imaging speed and quality. The second method uses 2D […]

Easily Fabricated Hollow Optical Waveguides Including Tapers

Description
Optical waveguides are devices that guide electromagnetic waves along a desired path, and with a minimum of loss from the generating point to the point of application. Air-core (hollow) optical waveguides enable controlled interaction between an optical beam and a gaseous or liquid medium, and thus have tremendous potential for applications in the telecommunications, computing, […]

Cost Effective MEMS Manufacturing Method for Gecko Inspired Dry Adhesives

Description
Many adhesives require a liquid component, are one time use, or leave a residue upon removal.  Molecular scale Van der Waals forces that result between smooth surfaces in very close contact can be utilized to overcome many of these issues.

 

Researchers at the University of Alberta have developed an improved micro-electromechanical manufacturing technique that can more […]

Improved Microwave Susceptor Design for Rapid and Controllable Heating

Description
Wafer bonding is widely used for packaging micro-fabricated devices such as microfluidic channels, microelectromechanical sensors (MEMS) and optical micro mirrors to ensure a mechanically stable and hermetically sealed encapsulation. This procedure involves heating the wafer, a thin slice of semiconductor material, up to its melting point and then cooling to surround the device. Unfortunately, the […]

Metallic Nanocomposite Films for NEMS Applications

Description
Most structural components in nanoelectromechanical systems (NEMS) are synthesized from single crystal or polycrystalline silicon, carbide, nitride, or diamond films, with silicon being by far the most widely used. However, silicon has low fracture strength and poor wear characteristics and is poorly suited for electrically conductive and magnetic sensing applications. Metallic films can provide better […]