Ryerson University – TechConnect Briefs

Gold-based Nanostructures for Improved Cancer Therapeutics

Yang C., Neshatian M., Hegarty N., Chithrani D., Ryerson University, CA

The field of nanotechnology is currently undergoing explosive development on many fronts. The technology is expected to generate innovations and play a critical role in cancer therapeutics. Among other nanoparticle (NP) systems, there has been [...]

Optical absorption enhancement of thin-film amorphous silicon induced by femtosecond laser pulses for solar cell fabrication

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

In this paper, we present a new method for direct-write laser fabrication of thin-film amorphous silicon (a-Si) on crystalline silicon substrate induced by femtosecond laser irradiation. Using megahertz frequency femtosecond laser pulses makes it possible [...]

Optical absorption enhancement of thin-film amorphous silicon induced by femtosecond laser pulses for solar cell fabrication

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

In this paper, we present a new method for direct-write laser fabrication of thin-film amorphous silicon (a-Si) on crystalline silicon substrate induced by femtosecond laser irradiation. Using megahertz frequency femtosecond laser pulses makes it possible [...]

Bioactivation of Titanium Surfaces by Femtosecond laser Processing

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

In this study, we propose a novel yet simple method to generate titanium oxide 3-D nanofibrous structures on the titanium implants using femtosecond laser machining. The femtosecond laser pulses hit the titanium substrate and generate [...]

Rapid Fabrication of Nanofibrous Membranes inside microchannels using Femtosecond Laser Micromaching

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

In this paper, we propose a single-step technique to develop membrane-based microfluidic channels using femtosecond laser micromachining. The proposed method fabricates both the nanoporous membrane and microfluidic channel in a single step under ambient condition. [...]

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 [...]