Purdue University – TechConnect Briefs

Vitamins C and B1: Amorphization, Crystallization, and Vitamin Degradation

Mauer L.J., Ismail Y., Arioglu-Tuncil S., Voelker A.L., Purdue University, US

Crystalline ingredient forms of water soluble essential vitamins C and B1 may dissolve or melt during food production, and then re-solidify in crystalline or amorphous forms. This study compared the phase transformations, amorphization, and chemical [...]

Spintronics: Recent developments on ultra-low-energy, area-efficient, and fast spin-devices and spin-circuits

Roy K., Purdue University, US

Electronics harnessed by electron's spin-based counterpart, so-called spintronics, has been widely studied in the context of nanomagnets. I will speak on the recent developments on ultra-low-energy, area-efficient, and fast spintronic devices, in particular on electric [...]

Photonic Crystal Fiber Based Refractive Index Sensor

Nazeri K., Ahsani V., Ahmed F., Lee P-C, Jun M.B.G., Purdue University, US

Photonic Crystal Fiber (PCF) is an optical fiber which owes its waveguide properties to an arbitrary arrangement of closely-spaced and tiny air holes that go through the whole length of fiber. Much attention has been [...]

Uniform Spray-based Large Area Nanoparticle Coating at Nanometric Thickness

Rukosuyev M., Lee P-C, Jun M.B.G., Purdue University, US

Nanoparticle deposition or coatings have drawn significant attention of many researchers and companies because of their potential use in a broad range of applications. For example, nanoparticle coatings can be used to create conductive, catalytic, [...]

Polymer Gels: Fracture, Friction, Healing and Superabsorbency

Erk K.A., Purdue University, US

Polymer gels have many industrial uses, from drug-delivery and wound-healing materials to the superabsorbent gels used in baby diapers as well as high-performance concrete. The macro-scale physical properties of the polymer gels, including the gel’s [...]

Polymer Gels: Fracture, Friction, Healing and Superabsorbency

Erk K.A., Purdue University, US

Polymer gels have many industrial uses, from drug-delivery and wound-healing materials to the superabsorbent gels used in baby diapers as well as high-performance concrete. The macro-scale physical properties of the polymer gels, including the gel’s [...]

Semiconducting Bilayer Graphene for Device Applications

Chu T., Zhao Y., Chen Z., Purdue University, US

Owing to its unique electronic, thermal, and mechanical properties, graphene has sparked enormous scientific interest since its discovery in 2004. However, the absence of a bandgap limits its applications in electronic and optoelectronic fields. Theoretical [...]

Modeling of liquid pumping via microchannels

Berdenova B., Ainabayev A., Insepov Z., Hassanein A., Bralts V., Insepov Z., Purdue University, US

We present our finite element modeling and discuss the main principles of our water actuation technique for water transport in micron scale tubes. The effect of water flow actuation by application of surface acoustic waves [...]

Amplification of Surface Acoustic Waves in Graphene Film under DC Voltage

Roshchupkin D.V., Kononenko O.V., Tynyshtykbayev K., Insepov Z., Purdue University, US

An acoustoelectric effect has been experimentally studied in a graphene film fabricated on the top of a piezoelectric crystal of the lanthanum–gallium silicate family Ca3TaGa3Si2O14 (CTGS) grown by the Czochralski method. The unit-cell parameters were [...]

Formation of complex nanoparticles from a spherical protein (BSA) and two polycations (PDL with two molecular weights) using coacervation method of the polyelectrolytes

Maldonado L., Sadeghi R., Kokini J., Purdue University, US

Complex nanoparticles (CNPs) were formed by mixing Bovine Serum Albumin (BSA) and Poly-D-Lysine with low (LMW-PDL) and high molecular weights (HMW-PDL). Since BSA and both PDL biopolymers in neutral and alkaline pHs are oppositely charged [...]