A5101817830- Ultrasound and Hyperthermia Applications
- Photoacoustic and Ultrasonic Imaging
- Ultrasound and Cavitation Phenomena
- Minerals Flotation and Separation Techniques
- Advanced Sensor and Energy Harvesting Materials
- Polymer Surface Interaction Studies
- Surface Modification and Superhydrophobicity
- Nanoplatforms for cancer theranostics
- Graphene and Nanomaterials Applications
- Pickering emulsions and particle stabilization
- Additive Manufacturing and 3D Printing Technologies
- biodegradable polymer synthesis and properties
- Photochromic and Fluorescence Chemistry
- Conducting polymers and applications
- Advanced Materials and Mechanics
- Advanced Polymer Synthesis and Characterization
- Electrospun Nanofibers in Biomedical Applications
- Solar-Powered Water Purification Methods
- Characterization and Applications of Magnetic Nanoparticles
- Supramolecular Self-Assembly in Materials
- Silicone and Siloxane Chemistry
- Surfactants and Colloidal Systems
- Cardiovascular and Diving-Related Complications
- Fluid Dynamics and Mixing
- Molecular Junctions and Nanostructures
Case Western Reserve University
2014-2022
University of Houston
2012
Blending thermoplastic polyurethane (TPU) with poly(lactic acid) (PLA) is a proven method to achieve much more mechanically robust material, whereas the addition of graphene oxide (GO) increasingly applied in polymer nanocomposites tailor further their properties. On other hand, additive manufacturing has high flexibility structure design which can significantly expand application materials many fields. This study demonstrates fused deposition modeling (FDM) 3D printing TPU/PLA/GO and its...
We report an ultrasound contrast agent for which we engineered the shell structure to impart much better stability under intense stress and deformation.
The present study investigates the synthesis of graphene oxide‐chitosan (CS‐GO) nanocomposite films and their potential application in food packaging. Nanocomposite were synthesized by cross‐linking oxide with chitosan at high temperatures (120°C). gel content assay showed an increasing % Gel film introduction GO, from 64% to almost 89%, which could be related reaction between GO epoxy groups amine hydroxyl groups. Mechanical strength, thermal stability, infrared analysis antimicrobial...
A highly efficient mesh for oil/water separation was fabricated by using a superhydrophobic and superoleophilic coating of thiol–ene hybrid, consisting pentaerythritol tetra(3-mercaptopropionate) (PETMP), 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane (TMTVSi), hydrophobic fumed silica nanoparticles, via simple two-step fabrication process. Spray deposition UV curing photopolymerization were sequentially performed, during which solvent evaporation provides microscale roughness...
Janus particles have recently garnered significant attention for their distinct properties compared to that are homogeneously functionalized. Moreover, high aspect ratio rod-like or planar (i.e., nanosheets) especially intriguing considering interfacial as well ability assemble into higher order and hybrid structures. To date, major challenges facing the exploration utilization of 2D scalability synthesis, characterization tailored chemical functionalization, introduce a diverse set...
A resonant mass measurement technique simultaneously distinguishes and characterizes (size concentration) buoyant non-buoyant particles in a bubble sample.
Shell-stabilized gas nanobubbles have recently captured the interest of research community for their potential application as ultrasound contrast agents molecular imaging and therapy cancer. However, very existence submicron bubbles (especially uncoated bubbles) has been a subject controversy in part due to predicted Laplace overpressure reaching several atmospheres, making them supposedly thermodynamically unstable. In addition, backscatter resulting from interactions with nanoparticles is...
A Pickering-type emulsion is used as a template to encapsulate the phase change material stearic acid (SA) using graphene oxide nanosheets stitched together.
Ultrasound (US) is a widely used diagnostic imaging tool because it inexpensive, safe, portable, and broadly accessible. contrast agents (UCAs) are employed to enhance backscatter echo improve contrast. The most frequently utilized UCAs echogenic bubbles made with phospholipid or protein-stabilized hydrophobic gas core. While clinically utilized, applications of often limited by rapid signal decay (<5 min) in vivo under typical ultrasound protocols. Here, we report on formulation lipid...
Understanding the pressure dependence of nonlinear behavior ultrasonically excited phospholipid-stabilized nanobubbles (NBs) is important for optimizing ultrasound exposure parameters implementations contrast enhanced ultrasound, critical to molecular imaging. The viscoelastic properties shell can be controlled by introduction membrane additives, such as propylene glycol a softener or glycerol stiffener. We report on production high-yield NBs with narrow dispersity and different properties....
Emulsions are important in numerous fields, including cosmetics, coatings, and biomedical applications. A subset of these structures, oil-in-oil emulsions, especially intriguing for water sensitive reactions such as polymerizations catalysis. Widespread use application emulsions is currently limited by the lack facile simple methods preparing suitable surfactants. Herein, we report ready preparation using 2D nanomaterials surfactants at interface polar nonpolar organic solvents. Both edges...
3D printing has revolutionized a number of industries, but complete extension to electronics, robotics, and machines yet be realized. Current limitations are due the absence reliable facile methods materials for accessing conductive printed materials. Traditional approaches conducting nanocomposites (melt-mixing solution-mixing) require high energy, time-consuming, or demand functionalization compatibilization between filler matrix. Moreover, these usually loading nanofiller establish...
The amount of gas in ultrasound contrast agents is related to their acoustic activity. Because this relationship, volume has been used as a key variable normalizing the vitro and vivo behavior lipid shell-stabilized bubbles with different sizes shell components. Despite its importance, bubble typically only theoretically calculated based on size concentration that measured using Coulter counter for microbubbles nanoparticle tracking analysis (NTA) nanoscale bubbles. However, while these...
Nanotechnology currently enables the fabrication of uniform solid nanoparticles and liquid nano-emulsions, but not gaseous nanobubbles (NBs). In this article, for first time, a method based on microfluidics that directly produces monodisperse NBs is reported. Specifically, two-component gas mixture water-soluble nitrogen water-insoluble octafluoropropane as phase are used in microfluidic bubble generator. First, microbubbles (MBs) with classical flow-focusing junction generated, then MBs...
A facile approach of fabricating a temperature-responsive coating capable switching reversibly from being superhydrophobic to superhydrophilic is presented. The combines micromolding, layer-by-layer assembly the polymer macroinitiators, and surface-initiated polymerization. Changing between superhydrophobicity superhydrophilicity depends heavily on surface roughness energy levels. In this study, was introduced by replicating morphology lotus leaf. levels made possible grafting brush. Wetting...
Polymeric fibers are of increasing interest to regenerative medicine, as materials made from these porous, allowing for cell infiltration, influx nutrients, and efflux waste products. Recently, multilayered coextrusion has emerged a scalable rapid fabrication method yield microscale submicron fibers. In this report, we describe the aligned poly(ε-caprolactone) (PCL) fibers, followed by simple photochemical patterning create surface-immobilized gradients onto polymer PCL were photochemically...
This study presents the development and successful 3D printing of siloxane composite. Complex structures are printed using vector‐scanning stereolithography apparatus. Siloxane oligomer a commercial resin in presence an appropriate photoinitiator combine to form hybrid material that photopolymerizes when exposed UV laser at 405 nm wavelength. Measurements with differential scanning calorimetry, thermogravimetric analysis, dynamic mechanical universal testing machine (UTM), system (MTS)...
Oil-in-oil emulsions are especially attractive for compartmentalized reactions with water-sensitive monomers which cannot be used traditional oil/water emulsions.
Ultrasound imaging is routinely used to guide prostate biopsies, yet delineation of tumors within the gland extremely challenging, even with microbubble (MB) contrast. A more effective ultrasound protocol needed that can effectively localize malignancies for targeted biopsy or aid in patient selection and treatment planning organ-sparing focal therapy. This study focused on evaluating application a novel nanobubble contrast agent specific membrane antigen (PSMA-targeted NBs) cancer (PCa)...