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Patent Application Titled "Carbon Nanotube Enabled Hydrophobic-Hydrophilic Composite Interfaces and Methods of Their Formation" Published Online

February 27, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventors Li, Chen (Chapin, SC); Huang, Xinyu (Columbia, SC); Dai, Xianming (Columbia, SC); Yang, Fanghao (Columbia, SC), filed on July 30, 2013, was made available online on February 13, 2014.

No assignee for this patent application has been made.

Reporters obtained the following quote from the background information supplied by the inventors: "Functionalized carbon nanotubes with intriguing properties have led to striking applications in nano-composites, nano-biology, nanofluidics and catalytic chemistry. Carbon nanotubes (CNTs) with defects are generally regarded to have mechanical, electrical and thermal disadvantages. However, recent work suggests that the defected CNTs exhibit intriguing properties for many emerging applications such as nano-sensors, super conductors, catalysts, and field effect transistors. Partially hydrophobic and partially hydrophilic interfaces are attracting more attention as they exhibit many new functionalities. Nanofabrication has been used to develop hydrophobic-hydrophilic composite interfaces, which are usually costly and challenging in tuning wettability. Functionalized carbon nanotubes (FCNTs) have great potential in manipulating properties for a wide range of emerging applications such as electrical, chemical, biomedical, mechanical, thermal, and nanocomposites."

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "Objects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.

"Methods are generally provided for forming a coated substrate having a plurality of carbon nanoparticles, along with the resulting coated substrates. In one embodiment, the method includes oxidizing the carbon nanoparticles to form oxygen containing end groups on the surfaces of the carbon nanoparticles; dispersing the oxidized carbon nanoparticles into a polymeric media to form an ink; and depositing the ink onto a substrate to form a coating. Generally, the coating includes the oxidized carbon nanoparticles dispersed within the polymeric material.

"Other features and aspects of the present invention are discussed in greater detail below.

BRIEF DESCRIPTION OF THE DRAWINGS

"A full and enabling disclosure of the present invention, including the best mode thereof to one skilled in the art, is set forth more particularly in the remainder of the specification, which includes reference to the accompanying figures, in which:

"FIGS. 1A-1C shows a schematic representation of the synthesis and characterization of the hydrophobic-hydrophilic FMWCNTs from (1A) pristine MWCNTs to (1B) aqua regia oxidized MWCNTs to (1C) plasma treated FMWCNTs according to the Examples.

"FIG. 1D shows a SEM image of a pristine MWCNT without defect according to the Examples.

"FIG. 1E shows a SEM image of defects on slightly functionalized FMWCNT indicated by Pt ions according to the Examples.

"FIG. 1F shows a SEM image of defects on deeply functionalized FMWCNT indicated by Pt ions according to the Examples.

"FIG. 1G shows a SEM image of hydrophobic and hydrophilic areas on FMWCNT coated interfaces according to the Examples.

"FIG. 1H shows a SEM image of interconnected cavities formed by partially hydrophobic and partially hydrophilic FMWCNTs according to the Examples.

"FIG. 2A shows characterization of the wettability of hydrophobic-hydrophilic FMWCNTs interfaces on pristine CNT coated interface with tilted angle 7.degree.

"FIG. 2B shows characterization of the wettability of hydrophobic-hydrophilic FMWCNTs interfaces on FMWCNT coated interface with tilted angle 180.degree.

"FIG. 2C shows characterization of the wettability of hydrophobic-hydrophilic FMWCNTs interfaces on dry FMWCNT coated interface.

"FIG. 2D shows characterization of the wettability of hydrophobic-hydrophilic FMWCNTs interfaces on wet FMWCNT coated interface.

"FIG. 2E shows the contact angle as a function of Raman ID/IG ratio and plasma treatment time (on FMWCNT coated flat copper surface).

"FIG. 3A shows cavity types and characterization of the nucleate boiling on four types of supernucleating interfaces and cavities for nucleate boiling.

"FIG. 3B shows a SEM image of a two-layer copper meshes sintered on smooth copper.

"FIG. 3C shows a SEM image of FMWCNTs coated mesh wires.

"FIG. 3D shows pool boiling curves, where FMWCNT meshes denote 'regular FMWCNT coated two-layer meshes'; Plasma-FMWCNT meshes 1--'intermediately functionalized FMWCNT coated two-layer meshes (8 min plasma treatment)'; and Plasma-FMWCNT meshes 2--'deeply functionalized FMWCNTs coated two-layer meshes (15 min plasma treatment)'.

"FIGS. 4A-4D show graphs of the bubble dynamics, with FIG. 4A a comparison of the nucleation site density, FIG. 4B a Comparison of the bubble growth rate, FIG. 4C a comparison of the bubble departure frequency, and FIG. 4D a comparison of the average bubble departure size.

"Repeat use of reference characters in the present specification and drawings is intended to represent the same or analogous features or elements of the present invention."

For more information, see this patent application: Li, Chen; Huang, Xinyu; Dai, Xianming; Yang, Fanghao. Carbon Nanotube Enabled Hydrophobic-Hydrophilic Composite Interfaces and Methods of Their Formation. Filed July 30, 2013 and posted February 13, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=3153&p=64&f=G&l=50&d=PG01&S1=20140206.PD.&OS=PD/20140206&RS=PD/20140206

Keywords for this news article include: Patents, Treatment, Fullerenes, Nanoparticle, Nanotechnology, Carbon Nanotubes, Emerging Technologies.

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Source: Politics & Government Week


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