A5035580372- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Advanced Sensor and Energy Harvesting Materials
- Graphene research and applications
- Boron and Carbon Nanomaterials Research
- MXene and MAX Phase Materials
- Corrosion Behavior and Inhibition
- Non-Invasive Vital Sign Monitoring
- Organic Electronics and Photovoltaics
- Online Learning and Analytics
- 2D Materials and Applications
- Conducting polymers and applications
- EEG and Brain-Computer Interfaces
- Ionic liquids properties and applications
- Nanowire Synthesis and Applications
- Crystal structures of chemical compounds
- Thermal properties of materials
- Force Microscopy Techniques and Applications
- Mechanical and Optical Resonators
- Nonlinear Optical Materials Research
- Machine Learning in Materials Science
- Molecular spectroscopy and chirality
- Advanced ceramic materials synthesis
- Surface and Thin Film Phenomena
Khalifa University of Science and Technology
2015-2025
Institute of Catalysis and Petrochemistry
2025
Green Chemistry
2024
Colgate University
2020
Cornell University
2020
University College London
2020
Biopotential signals are recorded mostly by using sticky, pre-gelled electrodes, which not ideal for wearable, point-of-care monitoring where the usability of personalized medical device depends critically on level comfort and wearability electrodes. We report a fully-wearable garment mobile cardiac biopotentials from wrists or neck with minimum restriction to regular clothing habits. The wearable prototype is based elastic bands graphene functionalized, textile electrodes battery-powered,...
Although many examples of mechanically flexible crystals are currently known, their utility in all-flexible devices is not yet adequately demonstrated, despite immense potential for fabricating high performance devices. Here, we report two alkylated diketopyrrolopyrrole (DPP) semiconducting single crystals, one which displays impressive elastic mechanical flexibility whilst the other brittle. Using crystal structures and density functional theory (DFT) calculations, show that methylated...
In line with current research goals involving water splitting for hydrogen production, this work aims to develop a noble-metal-free electrocatalyst superior evolution reaction (HER). A single-step interfacial activation of Ti3C2Tx MXene layers was employed by uniformly growing embedded WS2 two-dimensional (2D) nanopetal-like sheets through facile solvothermal method. We exploited the interactions between nanopetals and nanolayers enhance HER performance. much safer method adopted synthesize...
A seventh blind test of crystal structure prediction was organized by the Cambridge Crystallographic Data Centre featuring seven target systems varying complexity: a silicon and iodine-containing molecule, copper coordination complex, near-rigid cocrystal, polymorphic small agrochemical, highly flexible drug candidate, morpholine salt. In this first two parts focusing on generation methods, many (CSP) methods performed well for but agrochemical compound, successfully reproducing...
A seventh blind test of crystal structure prediction has been organized by the Cambridge Crystallographic Data Centre. The results are presented in two parts, with this second part focusing on methods for ranking structures order stability. exercise involved standardized sets seeded from a range generation methods. Participants 22 groups applied several periodic DFT-D methods, machine learned potentials, force fields derived empirical data or quantum chemical calculations, and various...
Mechanochemical coupling reactions are typically single-site events that thermally driven, require an inert atmosphere, and kinetically slow under ball milling conditions. Here, we demonstrate the rapid 4-fold single-pot mechanochemical C–N of tetrabromopyrene phenothiazine leading to a novel pyrene-phenothiazine (PYR–PTZ) molecule is shown be effective hole-transport material (HTM) in perovskite solar cell (PSC). When compared previously reported reactions, mechanosynthesis PYR–PTZ achieved...
Color polymorphism is a rare but intriguing phenomenon, crucial for fundamental understanding and with broad implications number of industries. We report the facile preparation six color polymorphs (forms I–VI) sulfonamide. All forms have been structurally characterized, studies attribute to molecular rotations about C═N–C–C dihedral (torsion 1). A definite correlation between wavelength value torsion 1 has established, indicating tendency red-shift decrease in values 1. Remarkable...
In this paper, we have developed a simple method for adaptive out-filtering of the motion artifact from electrocardiogram (ECG) obtained by using conductive textile electrodes. The electrodes were placed on left and right wrist to measure ECG through lead-1 configuration. was induced hand movements. reference signal filtering placing additional at one capture hand. compared independent component analysis (ICA) algorithm. signal-to-noise ratio (SNR) approach higher than in most cases.
The discovery of new crystalline forms large, flexible drug molecules is significant interest to the pharmaceutical industry as a means improving one or more physicochemical properties active ingredient (API). Trametinib (TRMB) an anticancer drug, for which no solid-state are yet reported. Here, we report results extensive screen cocrystals TRMB in effort improve poor aqueous solubility this API. Contrary expectations, led only six isostructural solvates TRMB, where solvent fill voids...
Over the past 2 decades, significant progress has been made in developing a robust supramolecular toolkit for crystal engineering of simple binary cocrystals. By contrast, higher-order molecular ionic cocrystals (ICCs) is not well established. Here, we report results most extensive survey and properties ICCs reported to date use resulting data propose set guiding principles aid crystallization sustained by charge-assisted hydrogen bonding interactions. Using comprising total 94 ICC...
Dynamic molecular crystals are an emerging class of crystalline materials that can respond to mechanical stress by dissipating internal strain in a number ways. Given the serendipitous nature discovery such crystals, progress field requires advances computational methods for accurate and high-throughput computation nanomechanical properties on specific facets which exposed stress. Here, we develop apply new atomistic model computing surface elastic moduli any set interest using...
Education systems are dynamically changing to accommodate technological advances, industrial and societal needs, enhance students' learning journeys. Curriculum specialists educators constantly revise taught subjects across educational grades identify gaps, introduce new topics, the outcomes. This process is usually done within same (e.g. math) or related math physics) considering different levels, leading massive multi-layer comparisons. Having nuanced data about subjects, outcomes...
Abstract Invited for the cover of this issue are Mubarak Almehairbi, Vikram C. Joshi, Changquan Calvin Sun and Sharmarke Mohamed. The image depicts digital exploration mechanical properties crystals on specific facets that may be interest materials applications by “dialing‐in” their stress response. Read full text article at 10.1002/chem.202400779 .
Most current techniques for analyzing amino acids require substantial instrumentation and significant sample preprocessing. In this study, we designed, fabricated, tested a scalable diode-based microdevice that allows direct sensing of acids. The device is based on modulation-doped GaAs heterostructure with Schottky contact one side. relatively high mobility small dielectric constant are naturally helpful in problem. We also paid attention to proper etching procedure allowing modification...
Without a doubt, teachers play vital role in building the students' educational foundation and critical thinking behavior, which could be quantified through various factors, especially if taught course falls within category of Science, Technology, Engineering Mathematics (STEM). Models based on Machine Learning (ML) Artificial Intelligence (AI) have proven their accuracy predicting performance. However, analyses explanations related to correlation strength between proficiency teachers'...
Understanding the interfacial mechanics of 2D heterointerfaces is a key factor to design various scaled devices based on heterogeneous materials such as graphene oxide (GO) and MXenes. In this study, adhesive interaction GO-GO, Ti 3 C 2 T x -GO, were systematically studied with atomic force microscopy (AFM) by using GO- -wrapped tips respective conjugating substrates. The adhesion energy -Ti , GO-GO interfaces are measured be 412±12, 404±12, 272±1 mJ/m respectively. property determined AFM...