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Steerable acoustically powered starfish-inspired microrobot
(2024)NanoscaleSoft polymeric microrobots that can be loaded with nanocargoes and driven via external field stimuli can provide innovative solutions in various fields, including precise microscale assembly, targeted therapeutics, microsurgery, and the capture and degradation of unwanted wastewater fragments. However, in aquatic environments, it remains challenging to operate with microrobotic devices due to the predominant viscous resistances and the ...Journal Article -
Understanding and decoupling the role of wavelength and defects in light-induced degradation of metal-halide perovskites
(2024)Energy & Environmental ScienceLight-induced degradation in metal halide perovskites is a major concern that can potentially hamper the commercialization of perovskite optoelectronic devices. The phenomena viz. ion migration, phase segregation, and defect intolerance are believed to be the factors behind the degradation. However, a detailed mechanistic understanding of how and why light reduces the long-term stability of perovskites is still lacking. Here, by combining ...Journal Article -
Water-Lipid Interface in Lipidic Mesophases with Excess Water
(2024)Faraday DiscussionsThis study investigates the influence of excess water on the lipidic mesophase during the phase transition from diamond cubic phase (Pn[3 with combining macron]m) to reverse hexagonal phase (HII). Using a combination of small angle X-ray scattering (SAXS), broadband dielectric spectroscopy (BDS), and Fourier transform infrared (FTIR) techniques, we explore the dynamics of lipids and their interaction with water during phase transition. ...Journal Article -
Precursor- and waste-free synthesis of spark-ablated nanoparticles with enhanced photocatalytic activity and stability towards airborne organic pollutant degradation
(2024)Environmental Science: NanoPhotocatalyst synthesis typically involves multiple steps, expensive precursors, and solvents. In contrast, spark ablation offers a simple process of electrical discharges in a gap between two electrodes made from a desirable material. This enables a precursor- and waste-free generation of pure metal oxide nanoparticles or mixtures of various compositions. This study presents a two-step method for the production of photocatalytic filters ...Journal Article -
Roadside disturbance promotes plant communities with arbuscular mycorrhizal associations in mountain regions worldwide
(2024)EcographyWe assessed the impact of road disturbances on the dominant mycorrhizal types in ecosystems at the global level and how this mechanism can potentially lead to lasting plant community changes. We used a database of coordinated plant community surveys following mountain roads from 894 plots in 11 mountain regions across the globe in combination with an existing database of mycorrhizal-plant associations in order to approximate the relative ...Journal Article -
Repurposing quantum chemical descriptor datasets for on-the-fly generation of informative reaction representations: application to hydrogen atom transfer reactions
(2024)Digital DiscoveryIn this work, we explore how existing datasets of quantum chemical properties can be repurposed to build data-efficient downstream machine learning models, with a particular focus on predicting the activation energy of hydrogen atom transfer (HAT) reactions. Starting from a valence bond (VB) analysis of a generic HAT process, a set of informative descriptors is identified. Next, a surrogate neural network model is constructed to predict ...Journal Article -
Polymeric integration of structure-switching aptamers on transistors for histamine sensing
(2024)Faraday DiscussionsAptamers that undergo large conformational rearrangements at the surface of electrolyte-gated field-effect transistor (EG-FETs)-based biosensors can overcome the Debye length limitation in physiological high ionic strength environments. For the sensitive detection of small molecules, carbon nanotubes (CNTs) that approach the dimensions of analytes of interest are promising channel materials for EG-FETs. However, functionalization of CNTs ...Journal Article -
Development of single-cell ICP-TOFMS to measure nanoplastics association with human cells
(2023)Environmental Science: NanoNanoplastics, solid polymer particles smaller than 1 μm, are suspected to be widely present in the environment, food and air, and may pose a potential threat to human health. Detecting nanoplastics in and associated with individual cells is crucial to understand their mechanisms of toxicity and potential harm. In this context, we developed a single-cell inductively coupled plasma time-of-flight mass spectrometry (sc-ICP-TOFMS) method for ...Journal Article -
Contact with soil impacts ferrihydrite and lepidocrocite transformations during redox cycling in a paddy soil
(2023)Environmental Science: Processes & ImpactsIron (Fe) oxyhydroxides can be reductively dissolved or transformed under Fe reducing conditions, affecting mineral crystallinity and the sorption capacity for other elements. However, the pathways and rates at which these processes occur under natural soil conditions are still poorly understood. Here, we studied Fe oxyhydroxide transformations during reduction–oxidation cycles by incubating mesh bags containing ferrihydrite or lepidocrocite ...Journal Article -
Quantifying global costs of reliable green hydrogen
(2023)Energy AdvancesThe current energy crisis has resulted in natural gas prices at an unprecedented level in many parts of the world, with significant consequences for the price of food and fertiliser. In this context, and with the projected reduction in the costs of renewables and electrolysers, green hydrogen is becoming an increasingly attractive option. In this study, we evaluate the current and future costs of green hydrogen, produced on a reliable ...Journal Article