Young’s modulus – TechConnect Briefs

SU-8 Based Flexure-FET Biosensor to Achieve Ultrasensitive Response

Chaurasiya D., Srinivasan B., Vanjari S., Singh S.G., Indian Institute of Technology, IN

This work presents SU-8 based Flexure-FET biosensor to achieve ultrasensitive response. Here, gate of FET is replaced with the fixed-fixed beam. Beam is biased near to pull-in instability (Vpi) and FET channel is biased in [...]

Structure and Mechanical Properties of Cr(Al)N/Al2O3 Nanocomposite Hard Coatings Fabricated by Differential Pumping Cosputtering

Kawasaaki M., Onishi I., Matsuda K., Nose M., Shiojiri M., JEOL USA Inc., US

Analytical electron microscopy revealed the structure of Cr(Al)N/Al2O3 nanocomposite coatings prepared on the Si substrate rotated at a speed as high as 12 rpm in a differential pumping cosputtering system(DPCS). The main layer that sputter-deposited [...]

Effect of length and radius of singlewall carbon nanotube on its mechanical properties

Alzubi F.G., Cosby R., Kuwait Institute for Scientific Research, KW

A first principles atomistic calculations and analysis of Young’s modulus for short arm chair carbon nanotubes with different lengths and radii is]]are reported. The atomic forces and total energies were computed for the carbon nanotubes [...]

Mechanical Properties of Reduced Graphene Polymer Composites

Xu P., Panchapakesan B., University of Louisville, US

In this paper, we report load transfer and mechanical properties of chemically derived single layer graphene (SLG) as reinforcements in poly (dimethyl) siloxane (PDMS) composites. Shear mixing reduced graphene sheets in polymers resulted in a [...]

Reinforcing Kevlar by Thin Outer Graphene Shell

Martirosyan K.S., Zyskin M., University of Texas at Brownsville, US

The development of advanced method to reinforce Kevlar fibers by using 2D graphene structures is reported. This method is based on the ultrasonic-assisted swelling of the polymeric fiber in a graphene suspension with the use [...]

Influence of resist composition on demolding force in UV nanoimprint lithography

Amirsadeghi A., Lee J., Park S., Louisiana State University, US

We investigated the influence of the Young’s Modulus (E) of UV resist on the measured demolding force in UV-NIL by varying compositions of UV-curable polymers. We found that decreasing crosslinking content of the polymers decreases [...]

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 [...]

Mechanics of silicon nanowires: size-dependent elasticity from first principles

Rudd R.E., Lee B., Lawrence Livermore National Laboratory, US

We have conducted a detailed study of the size dependence of the mechanical properties of silicon nanowires using first principles quantum mechanical calculation together with continuum mechanics theory and atomistic simulation based on empirical potentials. [...]

Investigation of the Deformation Mechanics in Nanoindenter Deflected Freestanding Submicron Gold Thin Films

Wang L., Prorok B.C., Auburn University, US

The Membrane Deflection Experiment (MDE) was employed to perform the microscale tensile testing on freestanding thin films of various FCC metals. Process parameter adjustments and annealing were performed to modulate the film microstructure. High-resolution SEM, [...]

Microfabrication and Mechanical Characterization of Suspended Carbon Microstructures

Malladi K., Wang C., Madou M.J., Xue W., Cui T., University of California Irvine, US

The idea of suspended carbon micro/nanostructures has been researched by a few research groups ], however, controlled fabrication of suspended carbon micro/nano structures in desired positions and with the desired shape and dimension is still [...]