Virginia Commonwealth University

3D printed energy efficient magnetocaloric cooling devices with controlled microchannels, functional grading and magnetic anisotropy

Sharma V., Balderson L., Barua R., Zhao H., Hadimani R.L., Virginia Commonwealth University, US

Air conditioning and refrigeration are regarded as one of the most energy-intensive technologies in demand today. Currently, 15% of the world's electric power is devoted to cooling, with that value increasing to 20% in the [...]

Production of Supercapacitor Carbon Electrodes from Corn-stover Via Facile Thermal Activation

Shell K.M., Maddipudi B.K., Amar V., Thakkar A., Shende R.V., Kumar S., Gupta R.B., Virginia Commonwealth University, US

Use of biomass is an emerging and promising alternative to produce carbon electrodes for supercapacitors. Lignin-rich unhydrolyzed solids (UHS) obtained from alkaline pretreatment and enzymatic hydrolysis of corn stover were valorized into biochar via hydrothermally [...]

Focused Transcranial Magnetic Stimulation

Carmona I., Kumbhare D., Baron M., Hadimani R.L., Virginia Commonwealth University, US

Transcranial Magnetic Stimulation is a non-invasive technique used to regulate the synaptic activity of neurons, improving the functionality of several regions and bringing effective treatment to neurological and psychiatric disorders applying external time-varying magnetic fields [...]

Silk biocomposites as flexible and biodegradable electrochemical sensors

Pal R.K., Yadavalli V.K., Virginia Commonwealth University, US

The convergence of naturally derived and synthetic polymers provides exciting opportunities to develop physiologically compliant bioelectronics systems. The combination of silk proteins and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) enables the formation of functional biocomposites with unique properties. [...]

Molecular Dynamics Simulations of Polytetrafluoroethylene at Glassy Transition Temperature

Al-Nsour R., Virginia Commonwealth University, US

This research is concerned with studying and understanding the thermal and mechanical behavior of PTFE. Such understanding is critical to predicting PTFE behavior and allowing bottom up design of improved polymers for specific applications. While [...]

Design Simulations of a Micropump with Multiple Actuating Mechanisms

Koombua K., Pidaparti R.M., Virginia Commonwealth University, US

This paper presented the design simulations of a valveless micropump with novel multiple vibrating membranes as actuators and investigated its performance characteristics. The designed PDMS micropump consists of three nozzle/diffuser elements with vibrating membranes that [...]

Nanocomposites based on Self-assembly of Collagen with DNA

Yadavalli V.K., Pidaparti R.M., Virginia Commonwealth University, US

Collagen is a fibrous protein that undergoes a complex self-organizing process at the nano-, micro-, and macro-scales to form hierarchical fibers. Fiber nano/microstructures are extremely sensitive to biophysical/biochemical environments. Their mechanical properties and anisotropy (macroscale) [...]

Affiliations: Virginia Commonwealth University