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Topic Review
Tapered Optical Fiber Configurations
Understanding environmental information is necessary for functions correlated with human activities to improve healthcare quality and reduce ecological risk. Tapered optical fibers reduce some limitations of such devices and can be considerably more responsive to fluorescence and absorption properties changes.
  • 1.4K
  • 05 Aug 2021
Topic Review
Tannylated Calcium Carbonate Materials
Calcium carbonate (CaCO3)-based materials have received notable attention for biomedical applications owing to their safety and beneficial characteristics, such as pH sensitivity, carbon dioxide (CO2) gas generation, and antacid properties. Herein, to additionally incorporate antioxidant and anti-inflammatory functions, we prepared tannylated CaCO3 (TA-CaCO3) materials using a simple reaction between tannic acid (TA), calcium (Ca2+), and carbonate (CO32−) ions. TA-CaCO3 synthesized at a molar ratio of 1:75 (TA:calcium chloride (CaCl2)/sodium carbonate (Na2CO3)) showed 3–6 μm particles, comprising small nanoparticles in a size range of 17–41 nm. The TA-CaCO3 materials could efficiently neutralize the acid solution and scavenge free radicals. 
  • 1.3K
  • 12 May 2021
Topic Review
Tailoring of Hierarchical Porous Freeze Foam Structures
Freeze Foaming is a method to manufacture cellular ceramic scaffolds with a hierarchical porous structure. These so-called Freeze Foams are predestined for the use as bone replacement material because of their internal bone-like structure and biocompatibility. On the one hand, they consist of macrostructural foam cells which are formed by the expansion of gas inside the starting suspension. On the other hand, a porous microstructure inside the foam struts is formed during freezing and subsequent freeze drying of the foamed suspension. The aim of this work is to investigate for the first time the formation of macrostructure and microstructure separately depending on the composition of the suspension and the pressure reduction rate, by means of appropriate characterization methods for the different pore size ranges. Moreover, the foaming behavior itself was characterized by in-situ radiographical and computed tomography (CT) evaluation. As a result, it could be shown that it is possible to tune the macro- and microstructure separately with porosities of 49–74% related to the foam cells and 10–37% inside the struts.
  • 359
  • 07 Feb 2022
Topic Review
Tailoring Nanoadsorbent Surfaces for Recycling of LTM
A series of adsorbents were tailored for selective extraction of rare earth elements (REE) and late transition metals (LTM) via grafting of ligands bearing specific N- and S-donor functions. All obtained adsorbents showed relatively quick uptake kinetics and high adsorption capacity 0.5 to 1.8 mmol/g, depending on the function and the target metal ion. The adsorption equilibrium data analyzed and fitted well to Langmuir isotherm model revealing monolayer adsorption process on homogeneously functionalized silica nanoparticles (NPs). Most of the employed ligands demonstrated higher affinity towards LTM compared to REE, related to the nature of the functional groups and their arrangement on the surface of nanoadsorbent.
  • 406
  • 11 Apr 2022
Topic Review
Tailoring Ceria-Based Nanocatalysts in Steam Reforming Processes
Ceria-based nanostructures, employed as catalytic supports for noble and non-noble metals, are well-known for their remarkable activity in steam-reforming reactions, exceptional resistance to degradation, and thermal stability.
  • 273
  • 28 Aug 2023
Topic Review
Taccalonolides
Taccalonolides are a new class of microtube-stabilizing agents isolated from plants of the genus Tacca demonstrating effectiveness against drug-resistant tumors in cellular and animal models.
  • 515
  • 16 Sep 2021
Topic Review
T-MIR Spectroscopy Applications in Coffee and Cocoa
Nowadays, coffee and cocoa have broad applications in the food and pharmaceutical industries due to their organoleptic and nutraceutical properties, which have turned them into products of great commercial demand. Consequently, these products are susceptible to fraud and adulteration, especially those sold at high prices, such as saffron, vanilla, and turmeric. This situation represents a major problem for industries and consumers’ health. Implementing analytical techniques, i.e., Fourier transform mid-infrared (FT-MIR) spectroscopy coupled with multivariate analysis, can ensure the authenticity and quality of these products since these provide unique information on food matrices.
  • 449
  • 01 Mar 2022
Topic Review
Synthetic Polymers
Unlike natural polymers, the chemical composition, functional group type and extent of functionalization, molecular weight, charge density and distribution, degradation and stability of synthetic polymers can be engineered to maximize antiviral activity against a specific virus type.
  • 910
  • 05 May 2022
Topic Review
Synthetic Polymeric Corrosion Inhibitor
An anti-corrosion inhibitor is one of the most useful methods to prevent metal corrosion toward different media. In comparison with small molecular inhibitors, a polymeric inhibitor can integrate more adsorption groups and generate a synergetic effect, which has been widely used in industry and become a hot topic in academic research.
  • 426
  • 24 Apr 2023
Topic Review
Synthetic Polymer-Based Sensors
Polymers are long-chain, highly molecular weight molecules containing large numbers of repeating units within their backbone derived from the product of polymerization of monomeric units. The materials exhibit unique properties based on the types of bonds that exist within their structures. Among these, some behave as rubbers because of their excellent bending ability, lightweight nature, and shape memory. Moreover, their tunable chemical, structural, and electrical properties make them promising candidates for their use as sensing materials. Polymer-based sensors are highly utilized in the current scenario in the public health sector and environment control due to their rapid detection, small size, high sensitivity, and suitability in atmospheric conditions.
  • 744
  • 16 Jun 2022
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