Magnetism, Magnetic Materials and Magnetic Devices Laboratory
Jayasimha Atulasimha, Ph.D.
Advanced Materials Processing (AMP) Laboratory
Radhika Barua, Ph.D.
Surface and Coatings Engineering Laboratory
Carlos E. Castano, Ph.D.
Ravi Hadimani, Ph.D.
Advanced Functional Materials Laboratory
Reza Mohammadi, Ph.D.
Karla Mossi, Ph.D.
Functional Materials and Devices Laboratory
Gary Tepper, Ph.D.
Wang Laboratory at VCU
Weining Wang, Ph.D.
Micro/Nano Transport and Printed Devices Laboratory
Hong Zhao, Ph.D.
The M3: Magnetism, Magnetic Materials and Magnetic Devices Laboratory focuses research on complementary experimental and modeling work in the areas of nanomagnetism and spintronics. Key research thrusts include voltage control of nanoscale magnetism; and applying the unique properties of such nanomagnetic and spintronic devices to the area of neuromorphic computing hardware.
Switch of the magnetic state of a magnetic memory device from magnetization “up” to “down” through a skyrmion (spiral magnetic state) with application of an electric field (voltage control of magnetic anisotropy). Source: TOC figure: ACS Appl. Mater. Interfaces 2018, 10, 17455−17462.
Manipulating the magnetic state of an array of nanoscale magnets with electric field induced stress (Straintronic Switching). Source: TOC figure: Nano Lett. 2016, 16, 1069−1075
The Advanced Materials Processing (AMP) Laboratory’s main focus is to identify and exploit fundamental connections between crystal structure, microstructure and functional response in select magnetic alloys and oxides, with the goal to enable advanced applications in the power, energy and biomedical sector. Current projects are focused on developing magnetic nanoparticle systems for theranostic biomedical platforms and rare-earth-free magnetocaloric materials systems for solid state cooling and energy harvesting applications.
Enabling functional magnetic materials for applications in the energy and biomedical sector.
Carlos E. Castano, Ph.D.Laboratory Website
The Surface and Coatings Engineering Laboratory focuses on tailoring the surface properties of materials by physical and chemical methods for engineering applications in energy, transportation and manufacturing. The research areas are organized around four main fields which include Nanotechnology, Surface Science, Functional Coatings, and Materials under Extreme Environments (Irradiation, Plasmas and High Temperatures).
Plasma-based reactor designed and built in Dr. Castano’s lab for modifying the surface of bulk as well as nanomaterials. Capable of doing powder samples with DC/RF/HiPIMS sources.
Potentiostat/Galvanostat couple with 8 channels multiplexer able to perform sequential operations. Dr. Castano’s lab uses it for electrochemical deposition, electrocatalysis and corrosion experiments.
Ravi L. Hadimani, Ph.D.Laboratory Website
The Biomagnetics Laboratory conducts the latest research on the applications of magnetic materials and devices in biomedical engineering. Biomagnetism is our main focus and carries tremendous scope in solving various problems relating to human health, especially in neurological interventions. We also work on magnetocaloric magnetic materials and devices that have the potential to increase the energy efficiency of refrigeration systems.
Schematic diagram for the use of Fe304-Gd5Si4 as T2 contrast agent for MRI and hyperthermia treatment for cancer.
Schematic of TMS research activities to investigate the underlying mechanisms of TMS using neuronal networks, focused coils, anatomically accurate brain phantoms, animal stimulators and microelectrode recording in rats.
Reza Mohammadi, Ph.D.Laboratory Website
The Advanced Functional Materials Laboratory focuses on developing superhard, superhydrophobic and nano-absorbent materials. Metallic superhard materials are extremely hard making them suitable for cutting tools, forming dies and aerospace components. Superhydrophobic materials research is key in making robust and transparent nonwettable coatings for practical applications such as satellite dishes, eyeglasses and window panes. Nano-absorbent materials, designed and fabricated from nano-composites using surface engineering, are used to detect and then remove heavy ions from aqueous media.
Transition-Metal Borides for Cutting Tools.
Fig. 2. (a) Left: High-resolution SEM of a glass slide coated with superhydrophobic soot; Right: a droplet on the superhydrophobic surface (b) left: (A) the fluorescent probe (B) quenching after addition of Fe3+, right: The TEM image of the Fe3O4@SiO2 probe. The diameter is 32nm. Karekin D Esmeryan et al 2018 J. Phys. D: Appl. Phys. 51 055302
Karla Mossi, Ph.D.Laboratory Website
The Smart Materials Laboratory conducts research in the field of Smart Materials and Structures. SML is involved in the design, construction, and characterization of composites for applications in energy energy harvesting, flow control, and integrated sensing and actuation.
Finate-element model and simulation parameters of a four-leg thermoelectric device. Studies of the effect of leg sizing, spacing, and geometries on power generation.
Three-dimensional topographical maps of an array of Piezoelectric composites closely matching the numeral result obtained by Rayleigh–Ritz 23-coefficient model.
The Functional Materials and Devices Laboratory is focused on the development and characterization of new materials and devices such as polymer nanofibers for filtration, tissue engineering and non-wetting surfaces, organic-inorganic crystalline films for photovoltaic applications, and nanoporous materials for chemical and radiological sensing.
Perovskite crystal formation with assistance of supercritical carbon dioxide.
Biased AC Electroplating of Aligned Polymer nanofibers.
Weining Wang, Ph.D.Wordpress Website Google Website
The Wang Laboratory works on a wide range of topics in nanoscience and nanotechnology with a focus on nanomanufacturing and heterogeneous catalysis, towards addressing critical challenges in the sectors of energy, environment and human health. Specifically, their research aims at solving fundamental issues in both areas, including nucleation, crystal growth, self-assembly in materials synthesis, and charge, heat, and mass transfers in catalysis.
Summary of Dr. Wang’s Research Projects at VCU.
The Micro/nano Transport and Printed Devices Laboratory is focused primarily on micro-/nano-engineered surfaces and interfaces, thermal and fluid science, transport and self-assembly of colloidal nanoparticles, combined with scalable micro/nano manufacturing. More specifically, our research centers around three main thrusts: inkjet printing and electrohydrodynamic printing, material interactions and directed self-assembly of functional materials; Printing of stretchable electronics, soft actuators and robotics; and Micro/nano engineered surfaces and interfaces for various applications.
A stretchable heater by inkjet printing and pattern transfer has been demonstrated.
Self-assemble of colloidal particles at the air-liquid interface during a dual-droplet inkjet printing process. The highly-ordered monolayer structure shows unique structural colors.