Three-dimensional printing (3DP) is considered among the key-technologies for the next industrial revolution, with considerable effects on production processes, economy, and society. In this context, the most relevant part of the market consists of polymeric 3D printing. The 3D printable liquids are composed of various components, among them dyes are usually underrated because they are introduced merely for aesthetical reasons or to enhance the objects' resolution. In recent years, the capability of specific dyes to go beyond conventional use and to confer functional properties to 3D printed objects has become an emerging research area. Modifying elastic moduli upon light irradiation, inducing optical and emitting properties in the matrices or conferring temperature responsivity are just few examples of innovative stimuli-responsive materials that can be produced by combining well-designed dyes with the appropriate 3DP printed matrices. In this Review, we discuss and critically analyze the most relevant recent results achieved in the use of smart dyes in the synthesis of stimuli responsive 3D printed polymers.

Semiconductor nanocrystals are promising photocatalysts for a wide range of applications, ranging from alternative fuel generation to biomedical and environmental applications. This stems from their diverse properties, including flexible spectral tunability, stability, and photocatalytic efficiencies. Their functionality depends on the complex influence of multiple parameters, including their composition, dimensions, architecture, surface coating, and environmental conditions. A particularly promising direction for rapid adoption of these nanoparticles as photocatalysts is their ability to act as photoinitiators (PIs) for radical polymerization. Previous studies served to demonstrate the proof of concept for the use of quantum confined semiconductor nanocrystals as photoinitiators, coining the term Quantum PIs, and provided insights for their photocatalytic mechanism of action. However, these early reports suffered from low efficiencies while requiring purging with inert gases, use of additives, and irradiation by high light intensities with very long excitation durations, which limited their potential for real-life applications. The progress in nanocrystal syntheses and surface engineering has opened the way to the introduction of the next generation of Quantum PIs. Herein, we introduce the research area of nanocrystal photocatalysts, review their studies as Quantum PIs for radical polymerization, from suspension polymerization to novel printing, as well as in a new family of polymerization techniques, of reversible deactivation radical polymerization, and provide a forward-looking view for the challenges and prospects of this field.

The invention discloses particular water-dispersible solid formulation of a cannabinoid or a cannabis extract , wherein they are present in the form of a nanoemulsion , and upon dispersion in water said formulation produces nanoparticles (droplets of a submicron size) with an average size of up to about 500 nm. The present disclosure further relates to methods of making thereof , as well as therapeutic applica tions in humans for treating disorders and broader applica tion for a range of medical conditions .

The invention provides a novel class of solid water-dispersible powders, comprising a plurality of water-insol. photoinitiators in nanoparticle forms for use in water-based ink formulations. [on SciFinder(R)]

The invention provides novel means for fabricating patterns and objects comprising nanorods, while reducing inter-particle interaction. [on SciFinder(R)]

A method of manufg. an electrochromic device is provided. The method includes providing a patterned arrangement of an elec. conductive material; and applying one or more layers of an electrochromic material to the patterned arrangement, wherein at least a portion of the electrochromic material is in elec. contact with the elec. conductive material. An electrochromic device and an electrochromic ink compn. are also provided. [on SciFinder(R)]

The present invention provides novel ink formulations based on metal salts and metal complexes.

The present invention provides novel ink formulations based on metal salts and metal complexes.

The methods of the invention permit design modalities which are currently unavailable in the printing of scintillating materials and objects, significantly reducing difficulties assocd. with manuf. of scintillating materials, decrease development time and assocd. costs. [on SciFinder(R)]

The invention provides a process of forming a continuous pattern on a surface composed of two or more surface regions, each of the regions being of a different surface energy, the process utilizing a novel ink formulation for printing on such multi-region surfaces. [on SciFinder(R)]

The invention relates to a light-absorbing element coated on at least a region of its surface with a film of at least one light-absorbing material, the light-absorbing material being assocd. with at least one binder material, the film being 1 - 20 μm thick and having light absorption of at least 90%. The invention also relates to a device comprising a light-absorbing element. The invention also claims a thermosolar device comprising a light-absorbing element. The invention also relates to a method of fabricating a light-absorbing film on a surface region of a substrate, the method comprising: (a) forming on a surface region at least one absorbing layer comprising: (I) a light-absorbing material; and (II) a polymerizable binder resin; (b) heating the at least one absorbing layer to induce polymn. of the binder resin; and (c) optionally forming at least one IR radiation reflecting layer on the polymd. binder. [on SciFinder(R)]

Even the best artists struggle to show us what real-world objects look like in all their three-dimensional (3D) glory. Most of the time that doesn't matter–-looking at a photo or sketch gives us a good-enough idea. But if you're in the business of developing new products and you need to show them off to clients or customers, nothing beats having a prototype: a model you can touch, hold, and feel. Only trouble is, models take ages to make by hand and machines that can make ``rapid prototypes'' cost a fortune (up to a half million dollars). Hurrah, then for 3D printers, which work a bit like inkjets and build up 3D models layer by layer at up to 10 times the speed and a fifth the cost. How exactly do they work? Let's take a closer look!

Pharmaceutical compn. comprising nanoparticles configured for enhanced phagocytosis by phagocytic cells and labeled with a near-IR (NIR) fluorescent probe bound to the outer surface thereof are provided, and uses thereof in the detection of activated immune cells in the central nervous system (CNS) of a subject. [on SciFinder(R)]

A paint formulation can include an inorg. oxide-based pigment and an org. binder. The org. binder can be irreversibly converted to an inorg. binder upon curing of the paint formulation at a temp. greater than 200° C. The oxide-based pigment and/or the paint formulation itself can have an absorptivity of at least 80% with respect to the AM 1.5 spectrum. The paint formulation can also include at least one org. solvent, an inorg. filler, and/or at least one additive. Such paint formulations may be stable at high temps. (e.g., 750° C.) and can be used as solar-radiation-absorbing heat-resistant coatings for components of a solar tower system. [on SciFinder(R)]

Paint formulations having a high absorptivity with respect to solar radiation are described. The paint formulations are also thermally and mech. durable, enabling the paint formulations to be used on components in solar thermal applications where exposure to high temps. and environmental conditions may be an issue. The paint formulation can include an oxide-based pigment, an org. binder, >=1 additives, an inorg. filler, and/or an org. solvent. The pigment can have a relatively high absorptivity with respect to light having a wavelength in the range 250-3000 nm. Curing of the paint formulation can irreversibly convert the org. binder into an inorg. binder. [on SciFinder(R)]

The invention generally relates to polymerizable conductive ink formulations comprising at least one metal source, at least one monomer and/or oligomer and a polymn. initiator, and uses thereof for printing three-dimensional functional structures. In particular a method of fabricating a three-dimensional conductive pattern on a substrate is disclosed, the method comprising: (a) forming a pattern on a surface region of a substrate by using an ink comprising at least one metal source, at least one liq. polymerizable monomer and/or oligomer, and at least one polymn. initiator; (b) polymg. at least a portion of said liq. monomer and/or oligomer; (c) rendering the metal source a continuous percolation path for elec. cond. (sintering); (d) repeating steps (a), (b) and optionally (c) to obtain a three-dimensional conductive pattern. [on SciFinder(R)]

The present disclosure is directed to dispersions of a Dead Sea material in oil, the Dead Sea material is present in the dispersions in the form of solid nanoparticles. Further disclosed are formulations comprising the dispersions, method of treating and/or preventing diseases or disorders of the skin comprising topical application of the dispersions or formulations thereof onto a skin of a subject, method of inducing a heat sensation on the skin of a subject by topically applying the dispersions or formulations thereof onto a skin of a subject and methods of prepg. the dispersions. Thus, an oil phase was prepd. by dissolving 1.8 g (9 wt%) Abil Em 90 in 11.48 g (57.4 wt%) cyclomethicone, 1 g (5 wt%) DOW 9041, 0.02 g (0.1 wt%) Vitamin E Acetate and 0.2 g (1 wt%) Retinyl palmitate mixt.; an aq. phase was prepd. by adding a 0.5 g (2.5 wt%) Dead Sea water (40 % dead sea salt, 1 % DSS final concn.) to 4.2 g (21 wt%) deionized water, 0.2 g (1 wt%) glycerol, 0.4 g (2 wt%) 1,3-propane diol and 0.2 g (1 wt%) PVP (MW = 40000); the total wt. of water and oil phase was 20 g; the aq. phase was added to the oil phase while being mixed for 10 min with a high speed homogenizer at a speed of 13000 rpm with or without addnl. sonication; the nanoparticles were obtained by water evapn. at reduced pressure (15 mbar, 50 °C for 40 min); the nanoparticles size obtained in the two processes, with and without sonication, measured by DLS was 99 nm and 255 nm, resp. [on SciFinder(R)]

Disclosed are novel ink formulations based on metal salts and metal complexes dispersed in a suitable liq. carrier. Also disclosed are a method of forming a printing formulation, a process for forming a conductive pattern on a surface region of a substrate using the printing formulation, and a conductive pattern obtainable by the process, wherein said conductive pattern has high oxidn. resistance at ambient atm and low sheet resistance. [on SciFinder(R)]

The present invention relates to the use of pomegranate seed oil and fractions thereof for preventing and treating neurodegenerative diseases. Particularly, the present invention relates to emulsions of the pomegranate oil or fractions thereof for the prevention and treatment of brain diseases, including Creutzfeldt-Jacob disease (CJD) and multiple sclerosis (MS). The pomegranate seed oil or fraction thereof is administered in a form of an emulsion as a medical food, a functional food, a food additive, or a dietary supplement. A self-emulsifying drug delivery system (SEDDS) comprising pomegranate seed oil 31.46%, Tween 80 44%, Span 80 19.5%, and ethanol 4.97% was exemplified. Also, pomegranate oil and punicic acid significantly inhibited the toxic effect of copper in a transgenic mouse model of genetic prion disease, as measured by elevated percentage of cell survival. [on SciFinder(R)]

The invention provides a redispersible powder and aq. dispersions comprising nanoparticles of water insol. org. compds. The invention further provides methods for prepg. the redispersible powder and the aq. dispersion, wherein the methods comprise prepn. of an oil-in-water microemulsion and solvent removal. Thus, an oil-in-water microemulsion was prepd. contg. sodium dodecyl sulfate (SDS) 8 %, Bu acetate 3.5 %, 2-propanol 3.5 %, water 82 % and Pr paraben 3 %. [on SciFinder(R)]