We report novel flow dynamics at the interface of liquid and gas through nanofluidic pores without applying any external driving force. Rayleigh Taylor-instability of water and air in sub-100 nanometer fluidic pores in a micrometre square domain of water and air are studied. We analyse it in the context of parameters, such as applied pressure, position to pore size ratio of the nanofluidic pore, gravity, and density. The paper also verifies the flow velocity equation with the simulation results and discuss the mass transfer efficiency of such flow structures. We are the first to report a self-driven switching mechanism of nanofluidic flow from ON to OFF or vice versa. A highly nonlinear complex nature of fluid dynamics is observed in nanometric length-scale, which is also one of the first studies in room temperature. Self-driven nanofluidics will have a large positive impact on healthcare, net-zero sustainable energy production, and fundamental physic of fluid dynamics.

A significantly large scope is available for the scientific and engineering developments of high-throughput ultra-high sensitive oxygen sensors. We give a perspective of oxygen sensing for two physical states of matters—solid-state nanomaterials and plasma. From single-molecule experiments to material selection, we reviewed various aspects of sensing, such as capacitance, photophysics, electron mobility, response time, and a yearly progress. Towards miniaturization, we have highlighted the benefit of lab-on-chip-based devices and showed exemplary measurements of fast real-time oxygen sensing. From the physical–chemistry perspective, plasma holds a strong potential in the application of oxygen sensing. We investigated the current state-of-the-art of electron density, temperature, and design issues of plasma systems. We also show numerical aspects of a low-cost approach towards developing plasma-based oxygen sensor from household candle flame. In this perspective, we give an opinion about a diverse range of scientific insight together, identify the short comings, and open the path for new physical–chemistry device developments of oxygen sensor along with providing a guideline for innovators in oxygen sensing.

Nanoscale anisotropic dynamical systems are tedious to solve in a classical domain without any approximation techniques. In such cases, the interactive space and force are significant in defining their motions. We solve and simulate the phase transition motion of water in the interface of 3 μm × 3 μm confined water domain. We demonstrate the presence of solitons in Bose-Einstein condensate at a nanosecond time scale by solving a nonlinear partial differential equation. We find an exact solution of the 2D Gross-Pitaevskii equation with XY-model using the Heisenberg picture which creates solitons and condensate nucleation.

We present the nanometric chemical decomposition of Himalayan agricultural soils. The motivation to use this state-of-the-art material characterisation in the soil is to reduce the testing cost while increasing the efficiency of the characterisation. In India, a bulk volume of soil is still required for the characterisation of agricultural soil. The fertility of micronutrient contents and crop supply capacity vary greatly depending on soil types, crop types, ecology, and agroclimatic variability. Since total levels of micronutrients are rarely predictive of the availability of a nutrient to plants, knowledge of the differences in soil micronutrients that are available to plants is essential for the sensible management of micronutrient fertility and toxicity. In the state of Uttarakhand, low levels of micro-nutrients in the soil are frighteningly common, and this issue is made worse by the fact that many current cultivars of important crops are extremely vulnerable to low mineral levels. These baseline results are to be used to inform local farmers about the potential remedies, costs, and consequential benefits and durability. We intend not to present a generalized or generalized solution. Therefore, we limit our soil sample collections to five arc minutes (8.6 square kilometers) and document variations and heterogeneity in the chemical components of the soil. In this study, we used scanning electron microscopy to chemically deconstruct the barren Himalayan soils from Uttarakhand. Aluminium, carbon, oxygen, and silicon were identified as the primary elements that contributed more than 5% of the total weight and atomic percentage. Other elements include less than 4% of iron, titanium, nitrogen, sodium, magnesium, chloride, phosphorus, sulfur, potassium, and calcium.

A significantly large scope is available for the scientific and engineering developments of high-throughput ultra-high sensitive oxygen sensors. We give a perspective of oxygen sensing for two physical states of matters -solid-state nanomaterials and plasma. From single-molecule experiments to material selection, we reviewed various aspects of sensing, such as capacitance, photophysics, electron mobility, response time, and a yearly progress. Towards miniaturisation, we have highlighted the benefit of lab-on-chip-based devices and showed exemplary measurements of fast real-time oxygen sensing. From the physicalchemistry perspective, plasma holds a strong potential in the application of oxygen sensing. We investigated the current state-of-the-art of electron density, temperature, and design issues of plasma systems. We also show a numerical aspects of low-cost approach towards developing plasma-based oxygen sensor from household candle flame. In this perspective, we give an opinion about a diverse range of scientific insight together, identifies the short comings, and opens the path for new physical-chemistry device developments of oxygen sensor along with providing a guideline for innovators in oxygen sensing.