A5048151174- Surface Modification and Superhydrophobicity
- Advanced Sensor and Energy Harvesting Materials
- Optical Coatings and Gratings
- Photonic Crystals and Applications
- Nanomaterials and Printing Technologies
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Adhesion, Friction, and Surface Interactions
- Thin-Film Transistor Technologies
- solar cell performance optimization
- Electrowetting and Microfluidic Technologies
- Plasmonic and Surface Plasmon Research
- Advanced ceramic materials synthesis
- Image Enhancement Techniques
- Nanowire Synthesis and Applications
- Perovskite Materials and Applications
- Advanced Materials and Mechanics
- Semiconductor Quantum Structures and Devices
- Nanofabrication and Lithography Techniques
- Hydrogen Storage and Materials
- Magnesium Alloys: Properties and Applications
- Polymer Surface Interaction Studies
- Glass properties and applications
- Transition Metal Oxide Nanomaterials
University of Pittsburgh
2018-2024
Medical textiles have a need for repellency to body fluids such as blood, urine, or sweat that may contain infectious vectors contaminate surfaces and spread other individuals. Similarly, viral has yet be demonstrated long-term mechanical durability is major challenge. In this work, we demonstrate simple, durable, scalable coating on nonwoven polypropylene textile both superhemophobic antivirofouling. The treatment consists of polytetrafluoroethylene (PTFE) nanoparticles in solvent thermally...
Nanostructured superclear, superomniphobic glass fabricated by a statistical machine learning procedure.
Optoelectronic applications such as solar cells and light-emitting diodes would benefit from glass substrates with both high transparency haze to improve power conversion extraction efficiencies, respectively. In this Letter, we demonstrate grass-like nanostructures that displays ultrahigh (both over 95% at wavelength 550 nm). The nanograss is fabricated by a scalable maskless reactive ion etching process in fused silica where the height controlled via etch time. We shorter ( 6 μm height),...
Polypropylene (PP) is used in a wide variety of medical components, but susceptible to bacteria surface colonization and biofilm formation, which lead infections inflammations. In this study, we report on the micro-/nanostructuring functionalization PP substrates through various oxygen fluorine reactive ion etching (RIE) treatments their effects wettability adhesion. We found that treatment creates hydrophilic reduces adhesion by 68.7% compared control, additional nanostructuring surface's...
High transparency, high haze substrates with self-cleaning functionality, can be used in advanced optoelectronic applications.
In this paper, we demonstrate the stain-resistance and high pressure stability of superomniphobic flexible optical plastics.
Abstract Metal nanomeshes are demonstrated as flexible transparent conductors with performance comparable to indium tin oxide. However, it is not known what the limits of these structures in terms transparency and sheet resistance. More importantly, haze, which describes how much incident light scattered by structures, has been studied. In this paper, transmission, resistance, haze metal comprehensively studied determine their fundamental through simulations experiments. Numerical analytical...
Eliminating light reflection from the top glass sheet in optoelectronic applications is often desirable across a broad range of wavelengths and large variety angles. In this paper, we report on combined simulation experimental study single-layer films, nanowire arrays, nanocone arrays to meet these antireflection (AR) needs. We demonstrate application Bayesian learning multiobjective optimization structures for broadband angle AR show superior performance genetic algorithms optimization. Our...
This study evaluates the performance of graded refractive index (GRIN) anti-reflective (AR) structures on photovoltaic (PV) modules across twenty global locations and compares them with conventional thin film AR coatings bare glass. Optimized glass nanocones were chosen to represent GRIN structures. Electrodynamic simulations conducted assess reflection properties at multiple angles incidence. dramatically reduce total solar-integrated 0.2% normal incidence, compared 3.8% for 0.8% optimized...
Transparent polymer substrates have recently received increased attention for various flexible optoelectronic devices. Optoelectronic applications such as solar cells and light emitting-diodes would benefit from with both high transparency haze, which increase how much scatters into or out of the underlying photoactive layers. In this letter, we demonstrate a new nanograss plastic substrate that displays highest combination haze in literature polyethylene terephthalate (PET). As opposed to...
We performed detailed balance analysis using rigorous coupled-wave (RCWA) on vertical GaAs nanowire (NW) arrays. Both freestanding NW arrays as well a perfect back reflector are assessed. types of demonstrate efficiencies that exceed the Shockley Queisser (SQ) or radiative efficiency limit when NWs sufficiently long. The use enhances solar cells by increasing absorption and suppressing emission from backside cell. study light trapping material reduction advantages NWs. Furthermore, we...
This paper reports on the formation of moth-eye nanopillar structures surfaces alkali-aluminosilicate Gorilla glass substrates using a self-masking plasma etching method. Surface and cross-section chemical compositions studies were carried out to study nanostructures. CFxinduced polymers shown be material during etching. The nanostructures enhance transmission at wavelengths over 525 nm may utilized for fluid-induced switchable haze. Additional functionalities associated with realized such...
Correction for ‘Self-cleaning, high transmission, near unity haze OTS/silica nanostructured glass’ by Sajad Haghanifar et al. , J. Mater. Chem. C 2018, 6 9191–9199, https://doi.org/10.1039/C8TC02513D.