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Creation Of Micro/Nano Surface Structures On Silver Using Collinear Double Femtosecond Laser Pulses With Different Pulse Separation, Nicholas Roth, Craig Zuhlke, Edwin Peng, Scott Hansen, Jeffrey E. Shield, Dennis Alexander
Creation Of Micro/Nano Surface Structures On Silver Using Collinear Double Femtosecond Laser Pulses With Different Pulse Separation, Nicholas Roth, Craig Zuhlke, Edwin Peng, Scott Hansen, Jeffrey E. Shield, Dennis Alexander
University of Nebraska's National Strategic Research Institute: Publications
Self-organized mound-like micro/nanoscale structures are reported for the first time on silver using a dual-pulse femtosecond laser surface processing technique. The dual-pulse laser processing technique reported in this paper uses femtosecond laser pulse pairs with a controlled temporal delay between the leading and trailing pulses. Using dual pulses at higher fluence values,mound-likemicro/nanostructures have been created on silver samples for the first time. Formation of the self-organized microstructures is shown to be dependent on the time delay between the leading and trailing pulses. Mound-likemicrostructures do not develop on silver for overlapped pulses or using single-pulse femtosecond laser surface processing for the …
Investigation Of Carbon Nanomaterials Embedded In A Cementitious Matrix, Clarissa A. Roe
Investigation Of Carbon Nanomaterials Embedded In A Cementitious Matrix, Clarissa A. Roe
Masters Theses & Specialist Projects
The objective of this thesis was to investigate whether the addition of carbon nanofibers had an effect on the splitting tensile strength of Hydro-Stone gypsum concrete. The carbon nanofibers used were single-walled carbon nanotubes (SWNT), buckminsterfullerene (C60), and graphene oxide (GO). Evidence of the nanofibers interacting with gypsum crystals in a connective manner was identified in both 1 mm thick concrete discs and concrete columns possessing a height of 2 in and a diameter of 1 in. Before imaging, the columns were subjected to a splitting tensile strength test. The results illustrate that while there is a general decrease in …