Systems, devices, and methods including a tapered shaft having a first end and a second end, wherein the first end is distal from the second end, where a diameter of the first end is smaller than a diameter of the second end; a fixed footwear holder secured to the first end of the tapered shaft; a fixed charm mount secured to the second end of the tapered shaft; a floating washer disposed about the tapered shaft, where an aperture of the floating washer has an inner diameter that is greater than the diameter of the first end and less than the diameter of the second end; and where the fixed charm mount is configured to securely fasten a charm; and where a length of the tapered shaft is greater than a maximum distance between the floating washer and the fixed footwear holder.

Aspects of the present disclosure provide for composite structures including a bonding layer that adheres a substrate (e.g., including a polymeric composition such as rubber) to a material (e.g., including a polymer such as polyurethane). The adhesion of the substrate to the material through the bonding layer can include chemical bonds such as, but not limited to, siloxane linkages, silanol linkages, silyl linkages, or any combination thereof in the bonding layer.

Aspects of the present disclosure provide for composite structures including a bonding layer that adheres a substrate (e.g., including a polymeric composition such as rubber) to a material (e.g., including a polymer such as polyurethane). The adhesion of the substrate to the material through the bonding layer can include chemical bonds such as, but not limited to, siloxane linkages, silanol linkages, silyl linkages, or any combination thereof in the bonding layer.

In order to provide a shoe member excellent in strength, the shoe member is composed of a polymer composition that includes cellulose nanofibers and one or more of inorganic fillers selected from the group consisting of magnesium carbonate particles, calcium carbonate particles, silica particles, and talc particles.

In order to provide a shoe member excellent in strength, the shoe member is composed of a polymer composition that includes cellulose nanofibers and one or more of inorganic fillers selected from the group consisting of magnesium carbonate particles, calcium carbonate particles, silica particles, and talc particles.

Disclosed is a novel non-slip grippy ventilated shoe made of a slip resistant material with a failure mode of from 1 to 50 Newtons/millimeter, and is generally made of a cage-like configuration to provide maximum slip resistance as well as ventilation with minimum structure, just sufficient enough structure to allow the shoe to provide grip on a surface. The shoe is useful in performing floor exercises such as barre, yoga and pilates among other applications such as water sports like surfing where grip is important, or for hospital settings for fall risk patients to alleviate the risk of falling.

Aerogels comprising a hydrophobic polyimide moiety, including hydrophobic polyimide aerogels, as well as methods of manufacture and applications thereof, are generally described.

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Aerogels comprising a hydrophobic polyimide moiety, including hydrophobic polyimide aerogels, as well as methods of manufacture and applications thereof, are generally described.

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The present invention generally relates to methods of printing articles using three-dimensional printing and other printing techniques, and to articles formed from such techniques, including the printing of articles of footwear containing particles. Certain embodiments are generally directed to composites comprising particles (e.g., reinforcing particles), for example, rubber particles. The particles may be used, for example, to increase slip or abrasion resistance. The composites may also contain polyurethanes or other compounds, e.g., to facilitate fabrication, e.g., using three-dimensional printing and other printing techniques. Other embodiments are directed to methods of making or using such articles. For example, in some embodiments, a composite may be prepared by mixing particles (e.g., reinforcing particles) with at least a first fluid and a second fluid within a nozzle, such as a microfluidic printing nozzle, which may be used to direct the resulting product onto a substrate.

The present invention generally relates to methods of printing articles using three-dimensional printing and other printing techniques, and to articles formed from such techniques, including the printing of articles of footwear containing particles. Certain embodiments are generally directed to composites comprising particles (e.g., reinforcing particles), for example, rubber particles. The particles may be used, for example, to increase slip or abrasion resistance. The composites may also contain polyurethanes or other compounds, e.g., to facilitate fabrication, e.g., using three-dimensional printing and other printing techniques. Other embodiments are directed to methods of making or using such articles. For example, in some embodiments, a composite may be prepared by mixing particles (e.g., reinforcing particles) with at least a first fluid and a second fluid within a nozzle, such as a microfluidic printing nozzle, which may be used to direct the resulting product onto a substrate.