Explanipedia

Washcoat Nanoparticle-Driven Microcrack Enlargement in a Coated Catalyst Open

Siddhant Naudiyal, Mark S’ari, Martha Briceno de Gutierrez, P. Bowen, Mark Simmons , et al. · 2025

Nanoparticles are avoided in coating particulate filters made from microcracked ceramics like aluminum titanate (AT) to prevent thermal stress damage during manufacturing despite limited understanding of the process. This study, first in t…

Large On–Off Enhancement of Au Nanocatalyst Contacts to ZnO Nanowires with Bulk and Surface Oxygen Modification Open

Alex M. Lord, Vincent Consonni, Fabrice Donatini, Demie Kepaptsoglou, Quentin M. Ramasse , et al. · 2025

Schottky diodes have been a fundamental component of electrical circuits for many decades, and intense research continues to this day on planar materials with increasingly exotic compounds. With the birth of nanotechnology, a paradigm shif…

Exploiting Organometallic Chemistry to Functionalize Small Cuprous Oxide Colloidal Nanocrystals Open

Bradley E. Cowie, Kristian L. Mears, Mark S’ari, Ja Kyung Lee, Martha Briceno de Gutierrez , et al. · 2024

The ligand chemistry of colloidal semiconductor nanocrystals mediates their solubility, band gap, and surface facets. Here, selective organometallic chemistry is used to prepare small, colloidal cuprous oxide nanocrystals and to control th…

Lithiated porous silicon nanowires stimulate periodontal regeneration Open

Martti Kaasalainen, Ran Zhang, Priya Vashisth, Anahid A. Birjandi, Mark S’ari , et al. · 2024

Lithiated porous silicon nanowires stimulate periodontal regeneration Open

Martti Kaasalainen, Ran Zhang, Priya Vashisth, Anahid A. Birjandi, Mark S’ari , et al. · 2023

Periodontal disease is a significant burden for oral health, causing progressive and irreversible damage to the support structure of the tooth. This complex structure, the periodontium, is composed of interconnected soft and mineralised ti…

Palladium-doped hierarchical ZSM-5 for catalytic selective oxidation of allylic and benzylic alcohols Open

Shengzhe Ding, Muhammad Ganesh, Yilai Jiao, Xiaoxia Ou, Mark A. Isaacs , et al. · 2021

Hierarchical zeolites have the potential to provide a breakthrough in transport limitation, which hinders pristine microporous zeolites and thus may broaden their range of applications. We have explored the use of Pd-doped hierarchical ZSM…

Characterization of Amorphous Solid Dispersions and Identification of Low Levels of Crystallinity by Transmission Electron Microscopy Open

Mark S’ari, Helen Blade, Stephen D. Cosgrove, Rik Brydson, Nicole Hondow , et al. · 2021

Amorphous solid dispersions (ASDs) are used to increase the solubility of oral medicines by kinetically stabilizing the more soluble amorphous phase of an active pharmaceutical ingredient with a suitable amorphous polymer. Low levels of a …

(Hydroxy)apatite on cement: insights into a new surface treatment Open

Ronald J. Turner, Pieter Bots, Alan E. Richardson, Paul A. Bingham, Alex Scrimshire , et al. · 2021

We have developed a conceptual model describing the formation and mineralisation processes of hydroxyapatite during biogenic and abiotic treatment on cement surfaces.

Analysis of complex, beam-sensitive materials by transmission electron microscopy and associated techniques Open

Martha Ilett, Mark S’ari, Helen M. Freeman, Zabeada Aslam, Natalia Koniuch , et al. · 2020

We review the use of transmission electron microscopy (TEM) and associated techniques for the analysis of beam-sensitive materials and complex, multiphase systems in-situ or close to their native state. We focus on materials prone to damag…

Direct Visualization of Arsenic Binding on Green Rust Sulfate Open

Jeffrey Paulo H. Perez, Helen M. Freeman, Andy Brown, Case M. van Genuchten, Knud Dideriksen , et al. · 2020

"Green rust" (GR), a redox-active Fe(II)-Fe(III) layered double hydroxide, is a potential environmentally relevant mineral substrate for arsenic (As) sequestration in reduced, subsurface environments. GR phases have high As uptake capaciti…

High‐resolution imaging of organic pharmaceutical crystals by transmission electron microscopy and scanning moiré fringes Open

Mark S’ari, Natalia Koniuch, Rik Brydson, Nicole Hondow, Andy Brown · 2020

Summary Formulation processing of organic crystalline compounds can have a significant effect on drug properties, such as dissolution rate or tablet strength/hardness. Transmission electron microscopy (TEM) has the potential to resolve the…

Multi-linear Regression Model to Predict the Electron Stability of Poorly Soluble Active Pharmaceutical Ingredients Open

Mark S’ari, Andy Brown, Rik Brydson, Nicole Hondow, Helen Blade , et al. · 2017

Journal Article Multi-linear Regression Model to Predict the Electron Stability of Poorly Soluble Active Pharmaceutical Ingredients Get access Mark S’ari, Mark S’ari University of Leeds, School of Chemical and Process Engineering, Leeds, U…

Transmission Electron Microscopy of a Poorly Soluble Drug, Felodipine Open

Mark S’ari, James Cattle, Andy Brown, Brydson Rik, Nicole Hondow , et al. · 2016

Many drugs that are currently in development exhibit poor dissolution properties due to low solubility. To increase the solubility of these drugs different technologies have been developed including solid dispersions, nano‐crystals and lip…

Analysis of Electron Beam Damage of Crystalline Pharmaceutical Materials by Transmission Electron Microscopy Open

Mark S’ari, James Cattle, Nicole Hondow, Helen Blade, Steve Cosgrove , et al. · 2015

We have studied the impact of transmission electron microscopy (TEM) and low dose electron diffraction on ten different crystalline pharmaceutical compounds, covering a diverse chemical space and with differing physical properties. The aim…

Transmission electron microscopy of a model crystalline organic, theophylline Open

James Cattle, Mark S’ari, Nicole Hondow, Patricia Abellán, Andy Brown , et al. · 2015

We report on the use of transmission electron microscopy (TEM) to analyse the diffraction patterns of the model crystalline organic theophylline to investigate beam damage in relation to changing accelerating voltage, sample temperature an…

Prospects for High Resolution Analytical Electron Microscopy of Organic Crystalline Particles Open

James Cattle, Mark S’ari, Neil Wilkinson, Nicole Hondow, Andy Brown , et al. · 2015

Journal Article Prospects for High Resolution Analytical Electron Microscopy of Organic Crystalline Particles Get access James Cattle, James Cattle Institute for Materials Research, School of Chemical and Process Engineering, University of…

Mark S’ari YOU? Author Swipe