Abstract:
Described herein are methods for improved transfer of graphene from formation substrates to target substrates. In particular, the methods described herein are useful in the transfer of high-quality chemical vapor deposition-grown monolayers of graphene from metal, e.g., copper, formation substrates to ultrathin, flexible glass targets. The improved processes provide graphene materials with less defects in the structure.
Abstract:
Described herein are improved dewetting methods and improved patterned articles produced using such methods. The improved methods and articles generally implement continuous ultra-thin metal-containing films or film stacks as the materials to be dewetted. For example, a method can involve the steps of providing a substrate that has a continuous ultra-thin metal-containing film or film stack disposed on a surface thereof, and dewetting at least a portion of the continuous ultra-thin metal-containing film or film stack to produce a plurality of discrete metal-containing dewetted islands on the surface of the substrate.
Abstract:
An article comprising: (i) a body, the body comprising a material and a transmittance greater than or equal to 90% throughout an electromagnetic radiation wavelength range of 250 nm to 800 nm; and (ii) cupric oxide (CuO) in direct contact with the material of the body, the cupric oxide (CuO) comprising a thickness that is less than or equal to 1.3 nm. Also disclosed is the article further comprising: an ultra-thin metal film disposed directly on the cupric oxide (CuO). The article demonstrates a transmittance greater than or equal to 65% throughout an electromagnetic radiation wavelength range of 300 nm to 1400 nm. The ultra-thin metal film can be silver (Ag), gold (Au), copper (Cu), or platinum (Pt). The ultra-thin metal film comprises a thickness within a range of 1 nm to 5 nm. The article at the ultra-thin metal film has a sheet resistance of less than or equal to 2100 Ω/□. Additionally, a method of forming the article.
Abstract:
A method of forming a functionalized device substrate is provided that includes the steps of: forming a conductive layer on a growth substrate; applying a polymeric layer to a device substrate, wherein a coupling agent couples the polymeric layer to the device substrate; coupling the polymeric layer to the conductive layer on the growth substrate; and peeling the growth substrate from the conductive layer.
Abstract:
Disclosed herein are graphene coatings characterized by a porous, three-dimensional, spherical structure having a hollow core, along with methods for forming such graphene coatings on glasses, glass-ceramics, ceramics, and crystalline materials. Such coatings can be further coated with organic or inorganic layers and are useful in chemical and electronic applications.
Abstract:
A textured article that includes a transparent substrate having at least one primary surface and a glass, glass-ceramic or ceramic composition; a micro-textured surface on the primary surface of the substrate, the micro-textured surface comprising a plurality of hillocks; and a nano-structured surface on the micro-textured surface, the nano-structured surface comprising a plurality of nano-sized protrusions or a multilayer coating comprising a plurality of layers having a nano-scale thickness. Further, the hillocks have an average height of about 10 to about 1000 nm and an average longest lateral cross-sectional dimension of about 1 to about 100 μm, and the nano-sized protrusions have an average height of about 10 to about 500 nm and an average longest lateral cross-sectional dimension of about 10 to about 500 nm. The substrate may be chemically strengthened with a compressive stress greater than about 500 MPa and a compressive depth-of-layer greater than about 15 μm.