Priyank V. Kumar

In Situ TEM Study of the Size-Dependent Solubility of Metals in Liquid Metal Nanodroplets

Caiden J. Parker, Karma Zuraiqi, Vaishnavi Krishnamurthi, Sahar Nazari et autres

Abstract Characterizing metal solubilities in post-transition-based liquid metals remains challenging due to their inherent opacity to conventional light-based analytical techniques. In this work, we present an in situ heating methodology within a transmission electron microscope that enables direct probing of the behavior …

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Liquid Gallium Nanozyme Coatings Enable Sustained Nitric Oxide Generation With Antioxidant and Anti‐Inflammatory Functions

Franco Centurion, Kang Lin, Shu Geng, Siti Nur Asyura Adzlan et autres

ABSTRACT Artificial nanozymes, defined as nanomaterials that mimic enzyme‐like catalytic activity, emerge as adaptable tools for biomedical applications by uniting catalytic activity with structural stability and chemical versatility. Here, we introduce liquid gallium (Ga) as a catalytic center for nitric oxide (NO) …

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Chlorine‐Functionalized Silane‐Modified Copper Electrocatalyst for Enhanced CO 2 Reduction to Multi‐Carbon Products

Ying Ying Ch'ng, Sankhadip Saha, Ming Zhang, Shujie Zhou et autres

ABSTRACT Electrochemical CO 2 reduction reaction (CO 2 RR) on Cu‐based catalysts toward multi‐carbon (C 2+ ) products remains challenging due to sluggish CO 2 activation, high C–C dimerization energy barriers, and competing hydrogen evolution reaction. While halide species, such as chlorine, …

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Decoding MnO2 redox chemistry from mechanistic ambiguity to design principles for aqueous Zn-ion batteries

Yuan Shang, Sankhadip Saha, Haotian Wen, Q Zhang et autres

Abstract Manganese dioxide (MnO 2 ) is a leading positive electrode candidate for aqueous zinc-ion batteries, combining safety, high voltage, low cost, and sustainability for grid-scale storage. However, its practical development remains restricted by poor reversibility, rooted in an unresolved mechanistic debate …

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Ostwald Ripening of Liquid-Metal-Grown Micropattern-Confined Crystals by Solid-Phase Diffusion

Lucy Johnston, Laetitia Bardet, Charlie Ruffman, Nicola Gaston et autres

The application spectrum of liquid metals as solvents in crystal synthesis is fast expanding. Harnessing liquid metal-mediated crystal growth with high spatial resolution is essential for the precise micro/nanopatterning of functional crystals. However, crystal growth under boundary confinement and postgrowth crystal evolution …

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Gallium in liquid state shows nuclease-mimicking activity

Li Liu, Jiewei Zheng, Xi Lu, Chowdhury Sarowar et autres

Replicating biological systems using non-living materials, from the foundational molecular level to complex tissue structures, is central to abiotic mimicry. Enzymes play a vital role in these systems; however, replicating their enzymatic power with minimal components remains a key challenge. Here we …

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RNA Hairpin Synthesis by RNase‐Catalyzed Dynamic Covalent Chemistry

Jonas Kaltbeitzel, Tejaswi Senthilkumar, Yazhinee Sathiyamoorthy, Susannah L. Brown et autres

Dynamic covalent chemistry (DCC) provides a powerful framework for assembling complex molecular architectures under thermodynamic control. Here, we extend RNA DCC by harnessing the ability of RNase T 1 —traditionally used as a degradative enzyme—to catalyze reversible phosphodiester exchange. Although enzyme‐mediated RNA …

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Effect of anhedral/dihedral wing angles on a blended wing body at low speeds

Shuvendra Mohan, Priyank V. Kumar

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Spectroelectrochemical insight into copper cobalt catalysts for CO2 and nitrite co-electroreduction to urea

Putri Ramadhany, Thành Trần-Phú, Jodie A. Yuwono, Rosalie K. Hocking et autres

Electrochemical CO2 and nitrite co-reduction provides a sustainable urea synthesis route but remains limited by low selectivity and an undecided C–N coupling mechanism. Here, we report co-sputtered bimetallic Cu–Co catalysts that facilitate urea formation via a tandem relay mechanism. The optimal Cu:Co …

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A liquid metal droplet rotary paddle motor

Richard Fuchs, Nur-Adania Nor-Azman, Shiyang Tang, Priyank V. Kumar et autres

Traditional rotary motors have been developed using a variety of technologies. Electrochemically fluidic motors based on liquid metals offer unique potential advantages to the field of rotary motors. Current designs, however, are limited in rotational speed due to suboptimal extraction of mechanical …

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Structurally Disordered PdNi Bimetallenes for Coupled Hydrogen Production and PET Upcycling at Industrial-level Current Densities

Chaudhry Furqan, Xinyao Guo, Yangfan Zhang, Yiming Xia et autres

Unmasking the intrinsic mechanistic limits of manganese Prussian blue analogues in aqueous Zn-ion batteries

Sankhadip Saha, Yuan Shang, Ruichen Ma, Xiaoran Zheng et autres

Mn-PBAs in aqueous Zn-ion batteries do not act as stable intercalation hosts but follow a dissolution–redeposition-driven conversion pathway, leading to Zn-PBA and manganese oxide phases that dominate electrochemical behavior and limit stability.

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