Now showing items 5098-5117 of 17018

    • Fabrication and characterization of multiscale electrospun scaffolds for cartilage regeneration 

      (2013)
      Recently, scaffolds for tissue regeneration purposes have been observed to utilize nanoscale features in an effort to reap the cellular benefits of scaffold features resembling extracellular matrix (ECM) components. However, one complication surrounding electrospun nanofibers is limited cellular infiltration. One method to ameliorate this negative ...
    • Fabrication and Mechanical Evaluation of Anatomically-Inspired Quasilaminate Hydrogel Structures with Layer-Specific Formulations 

      (2012)
      A major tissue engineering challenge is the creation of multilaminate scaffolds with layer-specific mechanical properties representative of native tissues, such as heart valve leaflets, blood vessels, and cartilage. For this purpose, poly(ethylene glycol) diacrylate (PEGDA) hydrogels are attractive materials due to their tunable mechanical and biological ...
    • Fabrication of carbon nanotube reinforced epoxy polymer composites using functionalized carbon nanotubes 

      Khabashesku, Valery N.; Zhu, Jiang; Peng, Haiqing; Barrera, Enrique V.; Margrave, John L.; (2009-10-13)
      The present invention is directed to methods of integrating carbon nanotubes into epoxy polymer composites via chemical functionalization of carbon nanotubes, and to the carbon nanotube-epoxy polymer composites produced by such methods. Integration is enhanced through improved dispersion and/or covalent bonding with the epoxy matrix during the curing ...
    • Fabrication of graphene nanoribbons and nanowires using a meniscus as an etch mask 

      Tour, James M.; Abramova, Vera; Slesarev, Alexander (2016-05-31)
      In some embodiments, the present disclosure pertains to methods of preparing graphene nanoribbons from a graphene film associated with a meniscus, where the method comprises patterning the graphene film while the meniscus acts as a mask above a region of the graphene film, and where the patterning results in formation of graphene nanoribbons from the ...
    • Fabrication of interconnected model vasculature 

      West, Jennifer L.; Chen, Christopher S.; Miller, Jordan S.; Yang, Michael T. (2016-09-27)
      Methods of fabricating a substantially interconnected model vasculature, as well as compositions formed from such methods are provided. In some embodiments, the methods may comprise forming a non-woven fiber network comprising a plurality of fibers and a void space; backfilling the void space of the fiber network; and removing the fibers to form a ...
    • Fabrication of light emitting film coated fullerenes and their application for in-vivo light emission 

      Barron, Andrew R.; Flood, Dennis J.; Loscutova, John Ryan (2013-01-29)
      A nanoparticle coated with a semiconducting material and a method for making the same. In one embodiment, the method comprises making a semiconductor coated nanoparticle comprising a layer of at least one semiconducting material covering at least a portion of at least one surface of a nanoparticle, comprising: (A) dispersing the nanoparticle under ...
    • Fabrication of light emitting film coated fullerenes and their application for in-vivo light emission 

      Barron, Andrew R.; Flood, Dennis J.; Loscutova, John Ryan (2007-08-07)
      A nanoparticle coated with a semiconducting material and a method for making the same. In one embodiment, the method comprises making a semiconductor coated nanoparticle comprising a layer of at least one semiconducting material covering at least a portion of at least one surface of a nanoparticle, comprising: (A) dispersing the nanoparticle under ...
    • Fabrication of light emitting film coated fullerenes and their application for in-vivo light emission 

      Barron, Andrew R.; Flood, Dennis J.; Loscutova, John Ryan (2010-03-23)
      A nanoparticle coated with a semiconducting material and a method for making the same. In one embodiment, the method comprises making a semiconductor coated nanoparticle comprising a layer of at least one semiconducting material covering at least a portion of at least one surface of a nanoparticle, comprising: (A) dispersing the nanoparticle under ...
    • Fabrication of optical components using a consumer-grade lithographic printer 

      Berglund, Gregory D.; Tkaczyk, Tomasz S.; Tkaczyk, Tomasz S. (2019)
      The ability to 3D print optical elements will greatly expand the accessibility of optical fabrication. Here, we report on two fabrication techniques for plano-convex lens files using a consumer-grade lithographic printer. Lenses were post-processed using a simple spin coating technique with the resin used in the printing process or by curing directly ...
    • Fabrication of plasmonic nanoparticle structures on planar substrates 

      Lwin, Nyein Z. (2006)
      Studying the optical properties of coupled plasmonic systems is important for both fundamental understanding and optimization of plasmon-enhanced optical sensing applications such as surface enhanced Raman scattering (SERS), near-field optical microscopy (NSOM) and surface plasmon resonance (SPR) sensing. Two nanoparticle structures of particular ...
    • Fabrication of reinforced composite material comprising carbon nanotubes- fullerenes- and vapor-grown carbon fibers for thermal barrier materials- structural ceramics- and multifunctional nanocomposite ceramics 

      Barrera, Enrique V.; Yowell, Leonard Lee, Jr.; Mayeaux, Brian Mitchell; Corral, Erica L.; Cesarano, Joseph, III (2007-12-11)
      The present invention is directed towards a ceramic nanocomposite comprising a nanostructured carbon component inside a ceramic host. The ceramic nanocomposite may further comprise vapor grown carbon fibers. Such nanostructured carbon materials impart both structural and thermal barrier enhancements to the ceramic host. The present invention is also ...
    • Face Down/Ground Up: Activating the Sixth Facade and Amplifying Public Space 

      Benzon, Courtney (2012-09-05)
      This thesis condenses open public space on an urban site in order to create an animated environment for public use. Maximizing use of an open lot in Sao Paulo, Brazil, an elevated concrete plate layers the site into a covered plaza below with sport and recreation program above. By lifting a programmable ground surface above street level, the project ...
    • Face Value 

      Salman, Abe Walid (2019-04-15)
      Society must be dealt with today by the architect’s capacity to synthesize its ontology and bind its various co-inhabitants. The concept of society is no more a unitary whole defined by a singular motive but instead a plethora of different motives. This notion is delineated in various sociological facets involved with the theories of social atomism. ...
    • FaceEngage: Robust Estimation of Gameplay Engagement from User-Contributed (YouTube) Videos 

      Chen, Xu; Niu, Li; Veeraraghavan, Ashok; Sabharwal, Ashutosh (2022)
      Measuring user engagement in interactive tasks can facilitate numerous applications toward optimizing user experience, ranging from eLearning to gaming. However, a significant challenge is the lack of non-contact engagement estimation methods that are robust in unconstrained environments. We present FaceEngage, a non-intrusive engagement estimator ...
    • Facemasks and ferrous metallurgy: improving gasification reactivity of low-volatile coals using waste COVID-19 facemasks for ironmaking application 

      Stewart, Daniel J. C.; Fisher, Lucy V.; Warwick, Michael E. A.; Thomson, David; Barron, Andrew R. (2022)
      The global pandemic response to COVID-19 has led to the generation of huge volumes of unrecyclable plastic waste from single use disposable face coverings. Rotary hearth furnaces can be used to recover Zn and Fe from non-recyclable steelmaking by-product dusts, and waste plastic material such as facemasks could be utilized as a supplementary reductant ...
    • Facets of Special Knapsack Equality Polytopes 

      Lee, E.K. (1993)
      The 0/1 knapsack equality polytope is, by definition, the convex hull of 0/1 solutions of a single linear equation. A special form of this polytope - where the defining linear equation has nonnegative integer coefficients and the number of variables having coefficient one is greater than the right-hand-side - is considered. Equality constraints of ...
    • Facile Graphene Oxide Preparation by Microwave-Assisted Acid Method 

      Viana, Marcelo M.; Lima, Meiriane C.F.S.; Forsythe, Jerimiah C.; Gangoli, Varun S.; Cho, Minjung; (2015)
      Few-layered graphene oxide (GO) was prepared using a fast and energy-saving method by microwave-assisted acid technique. The oxygenated groups existing on the GO surface were determined using UV-Vis, X-ray photoelectron and Fourier-transform infrared spectroscopies. An oxygenated group percentage of 30% in mass for the GO was observed by thermogravimetric ...
    • Facile one-pot synthesis of triphenylbismuth (V) bis(carboxylate) complexes 

      (2014)
      Triphenylbismuth(V) bis(carboxylates), Ph3Bi(O2CR)2 (R = 5-Br-2-OH-C6H3- (1), 2-OH-C6H4-(2), 2,6-(OH)2-C6H3- (3); 3-Me-2-NH2-C6H3- (4); Ph- (5) and Me- (6)) were obtained from the reaction of triphenylbismuth with hydrogen peroxide and excess carboxylic acid in wet 2-propanol. The synthesis avoids the use of halogens as oxidants and the products ...
    • Facile purification of carbon nanotubes with liquid bromine at room temperature 

      Mackeyev, Yuri; Wilson, Lon J. (2012-03-06)
      A method of removing metal impurities from carbon nanotubes includes treating carbon nanotubes with distilled bromine in a substantially oxygen- and water-free atmosphere and then removing the distilled bromine from the carbon nanotubes. Purified carbon nanotubes having an iron content from about 2.5 to about 3.5 by weight that are substantially free ...