Under both engineering and natural conditions on Earth in the Universe, some gas hydrates are found to be stabilised outside their window of thermodynamic stability by formation an ice layer-a phenomenon termed self-preservation. Low occupancy surface regions type I CO2 clathrate structures together with self-preserving layer lead effective buoyancy for these which restricts size range particles that float ocean Enceladus, Pluto similar oceanic worlds. Our goal here is investigate...

Abstract The Casimir‐Lifshitz force, F C − L , has become a subject of great interest to both theoretical and applied physics communities due its fundamental properties potential technological implications in emerging nano‐scale devices. Recent cutting‐edge experiments have demonstrated the quantum trapping at assisted by metallic planar plates immersed fluids through appropriate stratification inner dielectric media, opening up new avenues for exploring nano‐scale. This review article...

We report on the theoretical analysis of equilibrium distances in real plane-parallel systems under influence Casimir and gravity forces at thermal equilibrium. Due to balance between these forces, thin films Teflon, silica, or polystyrene a single-layer configuration immersed glycerol stand over silicon substrate certain stable unstable positions depending material slab thickness. Hybrid containing silica polystyrene, materials which display opposite nature when considered individually, are...

Considering ice-premelting on a quartz rock surface (i.e. silica) we calculate the Lifshitz excess pressures in four layer system with rock-ice-water-air. Our calculations give across (1) ice layer, (2) water and (3) ice-water interface for different thicknesses. We analyse equilibrium conditions where take zero value, stabilized part by repulsive interactions. In contrast to previous investigations which considered varying thickness of only one (ice or water), here present theory allowing...

We theoretically investigate the building of optical resonators based on levitation properties thin films subjected to strong repulsive Casimir–Lifshitz forces when immersed in an adequate medium and confronted with a planar substrate. propose design which cavities supporting high Q-factor modes at visible frequencies can be achieved by means combining commonly found materials, such as silicon oxide, polystyrene or gold, glycerol mediating medium. use balance between flotation system...

The recent development of organic polaritonic solar cells, in which sunlight absorbers and photon modes a resonator are hybridized as result their strong coupling, has revealed the potential this interaction offers to control enhance performance these devices. In approach, photovoltaic cell is built such way that it also behaves an optical cavity supporting spectrally well-defined resonances, match broad absorption bands dyes employed. Herein we focus on experimental theoretical analysis...

The way FRET takes place in dye-doped biopolymer complexes is studied by time-resolved measurements. efficiency of the energy transfer controlled relative concentration donor/acceptor species and described with a distribution processes. Amplified spontaneous emission system its evolution monitored.

We study at thermal equilibrium the effect of temperature deviations around room on distance (deq) which thin films made Teflon, silica, or polystyrene immersed in glycerol levitate over a silicon substrate due to balance Casimir, gravity, and buoyancy forces. find that nature (stable unstable) deq is preserved under changes, provide simple rules predict whether new position will occur closer further from temperature. These depend static permittivities all materials comprised system (ε0(m))...

Herein, both from the experimental and theoretical point of view, optical absorption properties a subphthalocyanine (SubPc), an organic macrocycle commonly used as sunlight harvester, coupled to metallic cavities are analyzed. How different electronic transitions characteristic this compound specifically those that give rise excitonic (Q band) charge transfer (CT couple cavity modes is investigated. It observed whereas CT band couples weakly cavity, Q show evidence hybridization with photon...

Thin films of ice and water on soil particles play crucial roles in environmental technological processes. Understanding the fundamental physical mechanisms underlying their formation is essential for advancing scientific knowledge engineering practices. Herein, we focus role Casimir-Lifshitz force, also referred to as dispersion behavior thin at 273.16 K, arising from quantum fluctuations electromagnetic field depending dielectric properties interacting materials. We employ first-principles...

Gas hydrates (GHs) in the water-filled rock cavity close to freezing temperatures can be stabilised via formation of ice layers.

An understanding of heat transport is relevant to developing efficient strategies for thermal management in areas study such as microelectronics, well fundamental science purposes. However, the measurement temperatures nanostructured environments and cryogenic conditions remains a challenging task, requiring both high sensitivity noninvasive approaches. Here, we present portable nanothermometer based on molecular two-level quantum system that operates (3–20)-K temperature range, with spatial...

The Casimir-Lifshitz force ${F}_{(C\ensuremath{-}L)}$ between planar objects when one of them is stratified at the nanoscale herein investigated. Layering results in optical interference effects that give rise to a modification losses, which, as stated by fluctuation-dissipation theorem, should affect interaction. On these grounds, we demonstrate that, nanostructuring same volume dielectric materials diverse multilayer configurations, it possible access attractive or repulsive nature, even...

An object that is immersed in a fluid and approaching substrate may find potential energy minimum at certain distance due to the balance between attractive repulsive Casimir–Lifshitz forces, phenomenon referred as quantum trapping. This equilibrium depends on relative values of dielectric functions materials involved. Herein, we study trapping effects planar nanocomposite demonstrate they are strongly dependent characteristics spatial inhomogeneity. As model case, consider spherical...

Gas bubbles in a water-filled cavity move upward because of buoyancy. Near the roof, additional forces come into play, such as Lifshitz, double layer, and hydrodynamic forces. Below uncharged metallic surfaces, repulsive Lifshitz combined with buoyancy provide way to trap micrometer-sized bubbles. We demonstrate how this size can be stably trapped at experimentally accessible distances, distances being tunable surface material. By contrast, large (≥100 μm) are usually pushed toward roof by...

Abstract This work introduces a thorough analysis of light transport in thin optically disordered media. The diffusive properties turbid material are generally dictated by the mean free path, l t . For depths larger than this characteristic length, propagation can be considered fully randomized. There is however range thicknesses for which becomes only partly randomized, as it undergoes single or very few scattering events. effects such finitude experimentally and theoretically studied on...

In today’s medicine, the celerity of bio-assays analysis is crucial for timely selection appropriate therapy and hence its effectiveness, especially in case diseases characterized by late onset symptoms. this paper, a lens-less fiber optics-based fluorescence sensor designed measurement labeled presented potential early diagnosis sepsis via C-reactive protein (CRP) detection demonstrated. The performance results from combination two key elements: planar antenna that redirects marker emission...

A lens-less optical fiber designed for enhanced-fluorescence biosensor applications is presented. In order to obtain the enhanced sensor performances, two elements are essential: a planar antenna that redirects fluorescence emission into narrow cone and an automated fiber-based system multi-spot analysis. particular, potential early diagnosis of sepsis via C-reactive protein (CRP) detection here demonstrated, reaching limit 1.5 ng/mL), which in clinical range interest such biomarker. Upon...

Thin films of ice and water on soil particles play crucial roles in environmental technological processes. Understanding the fundamental physical mechanisms underlying their formation is essential for advancing scientific knowledge engineering practices. Herein, we focus role Casimir-Lifshitz force, also referred to as dispersion behavior thin at 273.16 K, arising from quantum fluctuations electromagnetic field depending dielectric properties interacting materials. We employ first-principles...

The work here presented demonstrates theoretically that it is possible to create optical resonators based on levitation properties of thin films subjected repulsive Casimir-Lifshitz forces. Our cavity design made up commonly found materials, such as silicon oxide, polystyrene or gold, with glycerol a mediating medium, which supports high Q-factor modes at visible frequencies. balance between flotation and forces in the system allows fine-tuning thickness hence its modes. Finally, we show...

The latest progresses in polaritonic solar devices, which molecular absorbers and photon modes of a resonator are hybridized as result strong coupling regime, have revealed that light-matter interaction can be an interesting tool to control enhance devices performances. In this talk, light harvesting properties broadband operating under weak, ultra-strong regimes discussed. spectral directional response, together with the effect polaritons on unproductive absorption due presence metallic...