Search

In this study, the results of non-stoichiometric mesoporous aluminum titanate (mp-Al x TiO y) coating using sol-gel-based block copolymers assisted evaporation-induced self-assembly (EISA) have been presented. Here, a remarkably durable superhydrophilic coating with photocatalytic and anti-reflecting properties has been reported. With a Vicker's Hardness of 899 HV, mp-Al x TiO y coating on glass substrate indicates outstanding mechanical durability when exposed to the outside environment. Further, conventional accelerated ageing tests like the UV exposure test, damp-heat test, and saline resistance test were conducted to evaluate the endurance of the coating. By measuring the water contact angle, it has been proven that this coating is superhydrophilic. It has been shown through time-dependent degradation of (methylene blue, MB) dye; mp-Al x TiO y possesses photocatalytic capabilities similar to mp-TiO 2. Additionally, the mp-Al x TiO y coatings were found to exhibit improved optical transmittance and a reduced refractive index value. The power gain of a conventional Si solar cell was finally studied by examining the I–V characteristics of mp-Al x TiO y coated glass coupons attached to the solar cell. • Mesoporous Al-titanate coating for application on solar PV glass. • Exhibits self-cleaning activity, photocatalysis and anti-reflective properties. • Enhanced life-expectancy and durability, Vicker Hardness ∼899 HV. • Coating boosts light absorption and power gain in Si solar cell, enhancing its overall performance. [ABSTRACT FROM AUTHOR]

In this paper, we revisit the experimental constraints on the multipolar dark matter that has derivative coupling to the visible sector mediated by the Standard Model photon. The momentum dependent interaction enables them to be captured efficiently within massive celestial bodies boosted by their steep gravitational potential. This phenomena makes compact celestial bodies as an efficient target to probe such type of dark matter candidates. We demonstrate that a synergy of the updated direct detection results from DarkSide-50 and LUX-ZEPLIN together with IceCube bounds on high energy solar neutrinos from dark matter capture disfavour the viable parameter space of the dipolar dark matter scenario. Whereas, for the anapole dark matter scenario, a narrow window survives that lies within the reach of prospective heating signals due to the capture of dark matter at cold neutron stars. [ABSTRACT FROM AUTHOR]

The recent CDF-II measurement of the mass of the W boson shows a significant tension with the Standard Model (SM) expectation, even when averaged with earlier measurements. The tension can be explained in the framework of any beyond-SM dynamics that contributes substantially to the oblique S and T parameters. As a typical example of such beyond-SM physics, we try to explain the tension in the framework of the Georgi-Machacek model that keeps ρ = 1 at the tree-level, and explore the parameter space that can accommodate the W mass shift. We find that a sizeable split between the custodial triplet and 5-plet of scalars can help alleviate the tension to a large extent, and raise the W -mass by about 30 MeV over its SM value. [ABSTRACT FROM AUTHOR]

Recently, the CMS Collaboration observed the hint of a resonance decaying to two photons at about 96 GeV with a local significance of 2.8 σ. While it is too early to say whether this will stand the test of time, such a resonance can easily be accommodated in many extensions of the Standard Model (SM). The more challenging part is to tune such an extension so that the required number of diphoton events is reproduced. Assuming that the new resonance is a scalar, we propose that the signal may come either from an ultraviolet complete model with vectorial quarks, or a model involving gluon-scalar and photon-scalar effective operators. We then incorporate this portal to several extensions of the SM that include one or more cold dark matter candidates, and try to investigate how the existence of such a scalar resonance affects the parameter space of such models. As expected, we find that with such a scalar, the parameter space gets more constrained and hence, more tractable. We show how significant constraints can be placed on the parameter space, not only from direct dark matter searches or LHC data but also from theoretical considerations like scattering unitarity or stability of the potential, and discuss some novel features of the allowed parameter space. [ABSTRACT FROM AUTHOR]