The aim of this work was to examine particularly the Degussa P25 titanium dioxide nanoparticles (P25TiO2NPs) because they are among the most employed ones in cosmetics. In fact, all kinds of titanium dioxide nanoparticles (TiO2NPs) have gained widespread commercialization over recent decades. This white pigment (TiO2NPs) is used in a broad range of applications, including food, personal care products (toothpaste, lotions, sunscreens, face creams), drugs, plastics, ceramics, and paints. The original source is abundant in Earth as a chemically inert amphoteric oxide, which is thermally stable, corrosion-resistant, and water-insoluble. This oxide is found in three different forms: rutile (the most stable and substantial form), brookite (rhombohedral), and anatase (tetragonal as rutile), of these, both rutile and anatase are of significant commercial importance in a wide range of applications [3]. Additionally, the nano-sized oxide exhibits interesting physical properties, one of them is the ability to act as semiconducting material under UV exposure. In fact, TiO2NPs are the most well-known and useful photocatalytic material, because of their relatively low price and photo-stability [4]. Although, this photoactivity could also cause undesired molecular damage in biological tissues and needs to be urgently assessed, due to their worldwide use. However, not all nanosized titanium dioxide have the same behavior. In 2007, Rampaul A and Parkin I questioned: “whether the anatase/rutile crystal form of titanium dioxide with an organosilane or dimethicone coat, a common titania type identified in sunscreens, is appropriate to use in sunscreen lotions” [5]. They also suggested that with further study, other types of functionalized titanium dioxide could potentially be safer alternatives. Later, Damiani found that the anatase form of TiO2NPs was the more photoactive one, and stated that it should be avoided for sunscreen formulations, in agreement with Barker and Branch (2008) [6,7].
About CCM:
The origin of another type of glass, the lens, is difficult to trace, because lenses appeared some time before the first year of the AD. In the Islamic world during the 10th century, optics emerged as an important field of study, and mathematicians and scientists made great strides in understanding and regulating light. During the Renaissance, philosophers, scientists, and thinkers used lenses to see the physical world - the stars above us (the telescope was invented in 1608) and the earth below us (after the microscope was made in 1625). Glass has long been seen as a material capable of providing light in a literal sense, but it's worth remembering that glass also laid the foundation for much of our enlightenment.
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(2) The beam is connected with the column
Insulated window units are available in a variety of styles and configurations to suit different preferences and needs. Some units feature double-pane windows, while others have triple-pane windows for even greater energy efficiency. Some units also include features such as gas fills and warm-edge spacers to further improve insulation.
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In conclusion, switchable frosted glass represents a remarkable advancement in architectural design and interior functionality. It effectively addresses the age-old dilemma of balancing light, privacy, and aesthetics in our daily environments. Whether in homes or commercial spaces, this innovative solution embodies the spirit of modernity, sustainability, and adaptability, making it an essential component of contemporary design. As technology continues to evolve, the applications for switchable frosted glass will no doubt expand, further enriching our interactions with the built environment around us.
