Anomalous temperature induced transition and convergence of thermal conductivity in germanene monolayer.

We report an anomalous temperature-induced transition in thermal conductivity in the germanene monolayer around a critical temperature = 350 K. Equilibrium molecular dynamics simulations reveal a transition from ∼ scaling below the to ∼ above, contrasting with conventional ∼ behavior. This anomalous scaling correlates with the long-scale characteristic timescale obtained from double exponential fitting of the heat current autocorrelation function.

Solution processed Ti3C2 MXene nanosheets as resistive switching layers in flexible RRAM devices for sustainable electronics.

Due to their exceptional chemical stability and tunable chemical properties particularly the interlayer bonding, MXenes have emerged as promising switching layers in RRAM devices. This work presents the synthesis of nanosheets of a widely explored MXene (Ti3C2), and its application for demonstrating high performance flexible RRAM devices through solution processing, which is rarely demonstrated till date. The structural and morphological properties of Ti3C2 nanosheets were comprehensively investigated using various characterization techniques.

Cortico-subcortical converging organization at rest.

Local segregation and global integration are the fundamnetal organizational principles of human brain. It is unknown how subcortex configures itself with respect to the segregation and integration dynamics at rest. Using resting state functional MRI data of 92 healthy adult participants, we revealed three non-overlapping segregated communities in subcortex, confining anatomically to thalamus, basal ganglia, and subcortical limbic structures, termed as subcortical networks.

Nanocrystal synthesis with alkoxy reagents for dispersion in polar and non-polar solvents.

Applications of colloidal nanocrystals in polar solvents often require nanocrystals synthesized in non-polar solvents. However, solvent transfer processes are problematic and deteriorate nanocrystal quality. Here we report syntheses of nanocrystals with nearly universal solvent dispersibility using ligands and solvents with alkoxy repeating units.

Experimentally validated finite element model for mechanical and fracture characteristics of SiCN thin films under different loads.

In this work, SiCN thin films were deposited on p-Si (100) substrate using a thermal Chemical Vapor Deposition (CVD) process. The mechanical behavior of the thin film was characterized using the nanoindentation technique, where the load was varied from 1 to 4 mN, to understand the influence of load variation on the load-displacement response. Additionally, an experimentally validated FE model, incorporating an elast-plastic material response of the thin film, was developed to understand localized stress distribution and fracture behavior.

Tunable interfacial thermal conductance in graphene/germanene van der Waals heterostructure using an optimized interlayer potential.

Accurately modeling interfacial thermal transport in van der Waals heterostructures is challenging due to the limited availability of interlayer interaction potentials. We develop a pairwise interlayer potential for graphene/germanene van der Waals heterostructures using the binding energy obtained from ab initio density functional theory calculations and use it to calculate the interfacial thermal conductivity. Our calculations reveal that the interfacial thermal conductivity shows superior tunability with external strain.

In Situ Isolation and Culturing of Recalcitrant Soil Bacteria using an Isolation Chip (iChip).

Ecosystems harbor millions of environmental microbes, some of them capable of producing biotechnologically relevant products such as enzymes, vitamins, amino acids, organic acids, anti-parasitic agents, and antimicrobial agents. Most of these environmental bacteria are deemed "unculturable" as the laboratory culturing methods fail to meet their nutritional/environmental requirement. Moreover, as they coexist in nature, they may also be dependent on a nutrient/metabolite produced by another member of the microbial community.

Identification of miR's regulating oncogenes and tumor suppressor genes in acute myeloid leukemia: A bioinformatic approach.

Background: Acute myeloid leukemia (AML) is one of the most aggressive hematological malignancies, characterized by mutations in progenitor cells that disrupt normal apoptosis and cellular differentiation, leading to the uncontrolled proliferation of immature myeloid blasts. Mutations in oncogenes and tumor suppressor genes play a crucial role in this process by promoting unchecked cell division and compromising regulatory control over the cell cycle. This study aimed to identify microRNAs (miRNAs) that regulate these oncogenes and tumor suppressor genes in AML.

Integrating Prism-based TIRF with Confocal Microscopy: An Economical Approach for smFRET Experiments.

Total internal reflection fluorescence (TIRF) microscopy enables the observation of complex bioassemblies and macromolecular dynamics in high spatial-temporal resolution at the single-molecule level in real time. Through TIRF illumination, fluorophores near a sample substrate are selectively excited within an evanescent field, thereby overcoming the axial diffraction limit of light. Prism-based TIRF (p-TIRF) microscopes are relatively straightforward to construct and can be readily adapted to accommodate a wide range of experimental applications, including the examination of macromolecular complexes, the study of the behavior of vesicles and small organelles, and the investigation of protein-DNA complexes at the single-molecule level.

Assessing human biometeorological conditions in hot summer days in a world heritage site in Hampi in India.

Heritage sites exhibit distinct microclimatic conditions compared to the nearby areas owing to archaeological activities-driven landscape modification and tourism. Such sites are also susceptible to heat stress causing health hazards to tourists and locals. In one such context, this study used data from micrometeorological measurements performed in different sites in a large world heritage precinct (Z-1 & Z-2 are two bazaar streets; one partially shaded and one unshaded respectively, Z-3 ASI modified and Z-4 riverside) in Hampi, Karnataka, India on hot summer days in April 2024.

Visible light-driven chemistry of diaryliodonium reagents: mechanistic perspectives and synthetic applications.

Diaryliodonium reagents (DAIRs) are highly electrophilic arylating agents widely utilized in organic synthesis, excelling in both metal-free and metal-catalyzed transformations. However, their reactivity and application as aryl radical precursors under visible-light irradiation remain relatively underexplored. Due to their easy availability, intrinsic reactivity, stability, and environmentally benign nature, they are promising candidates to serve as aryl radical surrogates in various visible light-induced synthetic transformations.

Endogenous Pigment Mimicking Engineered Nanovesicle Targets Extrasynaptic NMDA Receptors against Ca-Mediated Excitotoxicity in Alzheimer's Disease.

In Alzheimer's disease (AD), deposition of toxic Aβ42 oligomers causes excessive internalization of 2A subunit dominant NMDA receptors (GluN2A subtype) from the synaptic region. This causes a significant reduction of the synaptic glutamate interaction site. The absence of GluN2A propagates spillage of glutamate to the extrasynaptic space, where it interacts with the 2B subunit dominant NMDA receptor (GluN2B subtype).

Temperature Pulse Driven Sulfurization and Desulfurization of CuO for Enhanced HS Quantification.

In this study, we report a power-efficient and highly selective HS gas sensing platform based on a pulse-modulated sensor of nanostone-structured CuO thin films. Nanostone morphology chemiresistive sensors exposed to HS at moderate temperatures (∼150 °C) undergo irreversible surface transformations, converting the active CuO phase into highly conductive CuS or CuS, which results in unstable current output and loss of sensing capability. To address this, we introduce a dynamic pulse modulation technique that cyclically toggles the sensing temperature ON and OFF at 200 °C, enabling in situ regeneration of CuO from CuS without external thermal treatment.

A decentralized privacy-preserving XR system for 3D medical data visualization using hybrid biometric cryptosystem.

In the era of digital healthcare, accurate and secure 3D visualization of medical data is critical for collaborative surgical planning. Traditional centralized systems suffer from security vulnerabilities and lack of depth cues necessary for accurate visualization of complex anatomy. We present a decentralized Extended Reality (XR)-based framework integrating a Hybrid Biometric Cryptosystem (HBC), hierarchical redactable blockchain, and InterPlanetary File System (IPFS)-based storage to address these limitations.

Self-Contained Analog Switching in AgHfO Memristor with Lattice-Sourced Ag Filament for Reliable Synaptic Behavior and Associative Learning.

HfO is one of the most widely studied materials for resistive switching, owing to its CMOS compatibility and scalable performance. However, HfO-based memristors suffer from stochastic filament formation, high device-to-device variability, and limited analog tunability due to abrupt and uncontrolled conductive filament growth, which limits their suitability for neuromorphic computing applications. Moreover, they often require external active electrodes like Ag or Cu to induce reliable switching, limiting material flexibility and integration.

Fostering science awareness through outreach workshops: bridging the gap between science and society.

Nurturing scientific understanding is the foundation for fostering community-driven solutions to pressing global challenges such as public health. Educating young minds is one of the most effective ways to build resilient, self-sufficient, and sustainable societies ready to confront issues of limited awareness about the microbial world, good hygiene practices, and the growing threat of antimicrobial resistance (AMR), a critical concern in India. This paper details the unique science outreach initiative, led by an all-women team, designed to enhance awareness about the unseen microbial world, their importance in our daily life, good hygiene practices, and the growing threat of AMR.

A Microwire Embedded with a NiSe/MoSe Microsupercapacitor with Photoinduced Ultrahigh-Energy Amplification.

Microsupercapacitors (MSCs) have emerged as promising miniaturized energy-storage devices for self-powered electronics. However, their practical adoption is hindered by insufficient energy density, poor stability, and short lifespan, necessitating solutions for improved practicability. Herein, we report a novel microwire embedded NiSe/MoSe (NMS) heterostructure MSC that addresses these challenges through photoenhanced energy storage.

Dinuclear aluminum complex as an active material for RRAM switching devices.

In this study, we report the synthesis and structural characterization of dinuclear aluminum complex 1, containing redox-active bis-catecholaldimine ligand 6,6'-{[ethane-1,2-diylbis(azanylidene)]bis(methanylidene)}-bis(3,5-di--butyl-1,2-dihydroxybenzene) (LH). Complex 1 was readily obtained by refluxing LH and Al(NO)·9HO in 3 : 2 molar ratio in the presence of triethylamine in a methanolic solution. Single-crystal X-ray diffraction analysis of complex 1 showed that catecholaldimine ligands bound octahedral coordination to each of the two Al(III) centers.

Neuro-insights: a systematic review of neuromarketing perspectives across consumer buying stages.

The application of neurophysiological techniques in marketing and consumer research has seen substantial growth in recent years. This review provides a comprehensive overview of how neuroscience has been integrated into consumer behavior research commonly referred to as "neuromarketing." While prior reviews have addressed methods, tools, and theoretical foundations, they have largely concentrated on the pre-purchase stage of decision-making.

Artificial diamond as a next generation material for gas sensors.

Diamond-based gas sensors have drawn a lot of interest because of their remarkable resilience, stability, and sensitivity in harsh conditions. Artificial diamonds have emerged as a cornerstone material in advanced technology due to their exceptional physical, chemical, and optical properties. The wide bandgap, chemical inertness, and superior thermal conductivity of diamonds are utilized by these sensors to provide excellent resistance to extreme temperatures and severe environments.

Caregivers' support among India's elderly: Findings from the longitudinal ageing study in India.

Objectives: The ageing phenomenon is accompanied by several challenges, among which decreased mobility and increased dependency remain prominent. This makes both caregiving and caregivers a crucial factor in ensuring the elderly population has a healthy and dignified life. This study emphasises the necessity of caregivers and the amount of time they dedicate to providing care for the elderly (60 years and above) in India.

Post-anoxic integrated biofilm activated sludge wastewater treatment process for emerging contaminant removal.

The study investigates the role of redox conditions and food-to-microorganism (F/M) ratio on emerging contaminants (ECs) attenuation in a laboratory-scale system. A Modified Ludzack Ettinger process integrated with a polyvinyl alcohol (PVA) gel-based biofilm reactor following the anaerobic tank was employed. Twenty ECs covering a wide range of physico-chemical properties were monitored across four treatment zones - aerobic, PVA, anoxic, and anaerobic reactors to understand the role of different redox conditions in removing ECs.

Tunable resonant Raman scattering with temperature in vertically aligned 2H-SnS.

Two-dimensional semiconducting materials have a wide range of applications in various fields due to their excellent properties and rich physics. Here, we report a detailed investigation of temperature-dependent Raman and photoluminescence measurements on vertically aligned 2H-SnS grown by the CVD method. Our results established the tunability of resonant Raman scattering with varying temperature, , a crossover between resonance and non-resonance conditions for the current system.

Crafting Precision: Design and Fabrication of a Xurography-Driven Microfluidic Platform for Exploring Neuron Culture and Targeted Drug Screening.

Over the past few decades, rapid advancements among cell culture models have come up as valuable assets in neurobiological research to understand the complexities of the human brain, disease development and progression at cellular and molecular levels. However, conventional 2D cell culture methods often fail to provide deeper insights into the complex phenomenon of neural cytoarchitecture. This limitation has led to the development of neural organoids such as neurospheres, which offer a closer representation of several neuronal cells.