A5052342707- Perovskite Materials and Applications
- 3D Printing in Biomedical Research
- Silk-based biomaterials and applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Microfluidic and Bio-sensing Technologies
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Neuroscience and Neural Engineering
- Thermal Radiation and Cooling Technologies
- solar cell performance optimization
- Advancements in Transdermal Drug Delivery
- Pluripotent Stem Cells Research
- Quantum optics and atomic interactions
- Gold and Silver Nanoparticles Synthesis and Applications
- Microfluidic and Capillary Electrophoresis Applications
- Electrospun Nanofibers in Biomedical Applications
- Cell Image Analysis Techniques
- Biochemical and Structural Characterization
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Strong Light-Matter Interactions
- Health Sciences Research and Education
- Silicon and Solar Cell Technologies
- Photonic Crystals and Applications
King Abdullah University of Science and Technology
2019-2024
University of Staffordshire
2024
National Institute Of Technology Silchar
2024
University of Kashmir
2017-2022
Yumanity Therapeutics (United States)
2021
Aligarh Muslim University
2021
Kootenay Association for Science & Technology
2021
Physical Sciences (United States)
2021
Massachusetts Institute of Technology
2016-2018
Helmholtz-Zentrum Berlin für Materialien und Energie
2017-2018
The dismal success rate of clinical trials for Alzheimer's disease (AD) motivates us to develop model systems AD pathology that have higher predictive validity. advent induced pluripotent stem cells (iPSCs) allows and study mechanisms directly in human neural from healthy individual as well patients. However, two-dimensional culture do not recapitulate the complexity tissue, phenotypes such extracellular protein aggregation are difficult observe. We report brain organoids use derived...
Abstract Microneedles are emerging as a minimally invasive drug delivery alternative to hypodermic needles. Current material systems utilized in microneedles impose constraints hindering the further development of this technology. In particular, it is difficult preserve sensitive biochemical compounds (such pharmaceuticals) during processing single microneedle system and subsequently achieve their controlled release. A possible solution involves fabricating from biomaterial silk fibroin....
27%-efficient perovskite/silicon tandem solar cells are achieved in n–i–p configuration by developing novel electron and hole selective contacts, which combine high broadband transparency with efficient charge extraction.
Perovskite/silicon tandem solar cells have gained significant attention as a viable commercial solution for ultra-high-efficiency photovoltaics. Ongoing research efforts focus on improving device performance, stability, and upscaling. Yet, paradoxically, their outdoor behavior remains largely unexplored. Here, we describe performance over complete calendar year outdoors in the area of Red Sea coast Saudi Arabia, which represents hot humid environment. After 1 year, our test retains 80% its...
Increased p25, a proteolytic fragment of the regulatory subunit p35, is known to induce aberrant activity cyclin-dependent kinase 5 (Cdk5), which associated with neurodegenerative disorders, including Alzheimer's disease. Previously, we showed that replacing endogenous p35 noncleavable mutant (Δp35) attenuated amyloidosis and improved cognitive function in familial disease mouse model. Here, address role p25/Cdk5 tauopathy, generated double-transgenic mice by crossing overexpressing human...
Microneedles represent an exciting departure from the existing parenteral injection paradigm for drug delivery, particularly administration of vaccines. While benefit delivering vaccine antigens to immunocompetent tissue in skin has been established, there have varying degrees success using microneedles do so. Here, we investigate use silk fibroin protein produce and evaluate their ability deliver vaccines against influenza, Clostridium difficile, Shigella. Fibroin silkworm Bombyx mori...
Carrier recombination at the interface between charge extraction layers and perovskite photoactive layer in solar cells reduces quasi-Fermi level splitting (QFLS) hence device's open-circuit voltage (VOC). Distinguishing interfacial carrier requires selective probing of dynamics with transient optical spectroscopy techniques. However, bulk recombination, all contribute to response, making a precise determination individual rates challenging. Here, we compare two commonly used hole transport...
Silk electrogelation involves the transition of an aqueous silk fibroin solution to a gel state (E-gel) in presence electric current. The process is based on local pH changes as result water electrolysis - generating H(+) and OH(-) ions at (+) (-) electrodes, respectively. has pI=4.2 when pH<pI, E-gel forms. An experimental system was constructed that allowed measurement growth distribution for applied To explain observed rectangular profile pH(gel)~4 surrounded by pH(silk-solution)~10,...
Abstract Microneedles are a relatively simple, minimally invasive and painless approach to deliver drugs across the skin. However, there remain limitations with this because of materials most commonly utilized for such systems. Silk protein, tunable biocompatibility properties, is useful biomaterial overcome current microneedles. devices preserve drug activity, offer superior mechanical properties biocompatibility, can be tuned biodegradability, processed under aqueous, benign conditions. In...
A prototypical hybrid system formed by strong coupled gold hole arrays and J‐aggregate molecules is investigated using both steady‐state spectroscopic method ultrafast pump‐probe approach. In particular, the plasmonic response of device has been tuned modifying its periodicity thus to achieve strongest possible coupling regime. It found that in transient absorption spectra, under upper band excitation, bleaching signal from uncoupled completely disappears. Instead, two distinctive period...
Abstract With the objective to conceive a plasmonic solar cell with enhanced photocurrent, we investigate role of nanoshells, embedded within ultrathin microcrystalline silicon cell, in enhancing broadband light trapping capability and, at same time, reduce parasitic loss. The thickness considered (μc-Si) layer is only ~1/6 conventional μc-Si based cells while nanoshells are formed by combination silica and gold, respectively core shell. We analyze optical response varying both geometrical...
Abstract Metal halide perovskites have emerged in recent years as promising photovoltaic materials due to their excellent optical and electrical properties, enabling perovskite solar cells (PSCs) with certified power conversion efficiencies (PCEs) greater than 25%. Provided radiative recombination is the dominant mechanism, photon recycling – process of reabsorption (and re-emission) photons that result from can be utilized further enhance PCE toward Shockley–Queisser (S-Q) theoretical...
Abstract Monolithic perovskite/silicon tandem solar cells have the potential to reach very high power conversion efficiencies ( PCE s) in a cost‐effective manner. In last decade, significant technological advancements been made for lab‐scale devices (~1 cm 2 ), with s now higher than theoretical limit of single‐junction silicon cells. For market entry such tandems, involved processing steps need be scaled industrial wafer dimensions, typically >244 , which also mandates development...
Peripheral nerve injury is a critical issue for patients with trauma. Following injury, incomplete axon regeneration or misguided innervation into tissue will result in loss of sensory and motor functions. The objective this study was to examine outgrowth alignment response surface patterning electrical stimulation. To accomplish our objective, metal electrodes dimensions 1.5 mm × 4 cm, were sputter coated onto micropatterned silk protein films, grooves 3.5 μm wide 500 nm deep. P19 neurons...
Abstract The origins of parasitic heating for photovoltaic (PV) technologies based on silicon, perovskites, and their combination in monolithic tandems are investigated. To quantify losses, the cooling score (CS) as a new simple metric, representing percentage incident solar irradiance not contributing to module is introduced. This function both optical structure power conversion efficiency (PCE) PV modules allows fair comparison between different under identical performance‐evaluation...
Journal Article A new chemotaxis device for cell migration studies Get access Waseem Khan Raja, Raja College of Nanoscale Science and Engineering, University at Albany, SUNY, NY Search other works by this author on: Oxford Academic Google Scholar Bojana Gligorijevic, Gligorijevic Department Anatomy Structural Biology, Albert Einstein Medicine, Bronx, 10461, USAGruss-Lipper Biophotonic Center USA Jeff Wyckoff, Wyckoff John S. Condeelis, Condeelis E-mail: john.condeelis@einstein.yu.edu James...
We calculated the absorption coefficient of colloidal wurtzite CdSe/CdS nanocrystals (NCs), ranging from spherical to strongly elongated shapes (aspect ratio up 21) by correlating NC absorbance spectrum elemental composition and overall dimensions. compared experimental data with numerical finite-element calculations coefficient, which can account for nonspheroidal shape influence organic ligand shell. The results unveiled that quantum confinement effects properties, even at relatively high...
Abstract The achievement of an ultrastrong coupling regime between surface plasmon modes generated by gold conical pits arrays and excitons associated to squaraine dye is demonstrated. Numerical experimental steady‐state reflection measurements demonstrate a remarkable Rabi splitting 860 meV, date the largest reported value involving modes. Furthermore, dynamics hybrid states under investigated transient absorption spectroscopy. results show that upper bands are too short‐lived be detected,...
BACKGROUND: The objective was to assess the prevalence and associated demographic factors of stress, anxiety, depression among undergraduate (UG) Indian dental students determine whether pattern is different in government-run institutions those managed by private authorities. MATERIALS AND METHODS: A cross-sectional study conducted UG from five colleges. Snowball sampling used approach 776 potential participants, resulting a complete response 507 students. questionnaire consisted data; year...