Vortex flow induced self-assembly in CsPbI rods leads to an improved electrical response towards external analytes.

We present a facile and versatile strategy for enabling CsPbI rods to self-assemble at an air-water interface. The CsPbI rods, which float at the air-water interface, align under the influence of the rotational flow field due to the vortex motion of a water subphase. The aligned CsPbI rods could be transferred onto various substrates without involving any sophisticated instrumentation.

Halide Tunablility Leads to Enhanced Biomechanical Energy Harvesting in Lead-Free CsSnX-PVDF Composites.

The main challenges impeding the widespread use of organic-inorganic lead halide perovskites in modern-day technological devices are their long-term instability and lead contamination. Among other environmentally convivial and sustainable alternatives, CsSnX (X = Cl, Br, and I) compounds have shown promise as ambient-stable, lead-free materials for energy harvesting, and optoelectronic applications. Additionally, they have demonstrated tremendous potential for the fabrication of self-powered nanogenerators in conjunction with piezoelectric polymers like polyvinylidene-fluoride (PVDF).

Preferential perovskite surface-termination induced high piezoresponse in lead-free fabricated CsBiBr-PVDF nanocomposites promotes biomechanical energy harvesting.

Lead-free halide perovskites have gained immense popularity in photovoltaic and energy harvesting applications because of their excellent optical and electrical attributes with minimal toxicity. We synthesized composite films of lead-free CsBiBr perovskite embedded in the polyvinylidene fluoride (PVDF) matrix and have investigated their piezoelectric energy harvesting. Five PVDF@CsBiBr composite films were fabricated with varying wt% of the perovskite in the PVDF.

Shape dependent multiferroic behavior in BiFeOnanoparticles.

Ferroelectric and magnetic properties are investigated for BiFeOnanoparticles with different shapes (cuboid and sphere-like) synthesized by hydrothermal and sol-gel method. The magnetic study reveals that coercivity, Neel temperature and remanent magnetization strongly depend on shape of the particle. The nanoparticle with sphere-like shape exhibits magnetization curve of antiferromagnetic (AFM) ordering with ferromagnetic (FM) component.

Solution-processed light-induced multilevel non-volatile wearable memory device based on CsPbBr perovskite.

Despite the recent advancements in memory devices, the quest for building materials with low power consumption is still on, with the ultimate focus on the durability of the system and reliability and reproducibility of its performance. Halide perovskites (HPs), which have several intriguing photoelectrical traits, have recently been utilized for memory applications; one of the highlights of these materials is the ionic-motion-based fast switching in their crystal structure. In this work, a CsPbBr film is applied as a switching layer to implement memory devices with a flexible Al/CsPbBr/ITO-PET structure.

Temperature-dependent dielectric properties of CsPbBr: a 2D inorganic halide perovskite.

Two dimensional (2D) CsPbBrhave been successfully synthesized via the chemical precipitation method. Detailed structural, morphological, optical, and dielectric studies of these materials have been performed. These 2D CsPbBrplates (of thickness around 200-300 nm) are ascribed to a tetragonal lattice system with4/space group.

Secondary Structure-Dependent Physicochemical Interaction of Oligonucleotides with Gold Nanorod and Photothermal Effect for Future Applications: A New Insight.

We investigate the physicochemical interactions of gold nanorod (GNR) with single-stranded, double-stranded, and hairpin DNA structures to improve the biological compatibility as well as the therapeutic potential, including the photothermal effect of the conjugates. Studies have demonstrated that different DNA secondary structures, containing thiol group, have different patterns of physicochemical interaction. Conjugation efficiency of paired oligonucleotides are significantly higher than that of oligonucleotides with naked bases.