Now showing items 1-17 of 17

    • Bio-Inspired, Moisture-Powered Hybrid Carbon Nanotube Yarn Muscles 

      Kim, Shi Hyeong; Kwon, Cheong Hoon; Park, Karam; Mun, Tae Jin; Lepro, Xavier; Baughman, Ray H.; Spinks, Geoffrey M.; Kim, Seon Jeong
      Hygromorph artificial muscles are attractive as self-powered actuators driven by moisture from the ambient environment. Previously reported hygromorph muscles have been largely limited to bending or torsional motions or ...
    • Biothermal Sensing of a Torsional Artificial Muscle 

      Lee, Sung-Ho; Kim, Tae Hyeob; Lima, M©rcio D.; Baughman, Ray H.; Kim, Seon Jeong (Royal Soc Chemistry, 2016-01-25)
      Biomolecule responsive materials have been studied intensively for use in biomedical applications as smart systems because of their unique property of responding to specific biomolecules under mild conditions. However, ...
    • Conductive Functional Biscrolled Polymer and Carbon Nanotube Yarns 

      Kim, S. H.; Sim, H. J.; Shin, M. K.; Choi, A. Y.; Kim, Y. T.; Lima, Marcio D.; Baughman, Ray H.; Kim, S. J. (2013-10-10)
      Biscrolling aligned electrospun fiber (AEF) sheets and carbon nanotube (CNT) sheets were fabricated for conductive, functional yarns by a versatile dry composite method. Our biscrolling (twist-based spinning) method is ...
    • Enhancing the Work Capacity of Electrochemical Artificial Muscles by Coiling Plies of Twist-Released Carbon Nanotube Yarns 

      Kim, K. J.; Hyeon, J. S.; Kim, H.; Mun, T. J.; Haines, Carter S.; Li, Na; Baughman, Ray H.; Kim, S. J.
      Twisted-yarn-based artificial muscles can potentially be used in diverse applications, such as valves in microfluidic devices, smart textiles, air vehicles, and exoskeletons, because of their high torsional and tensile ...
    • Harvesting Electrical Energy from Torsional Thermal Actuation Driven by Natural Convection 

      Kim, Shi Hyeong; Sim, Hyeon Jun; Hyeon, Jae Sang; Suh, Dongseok; Spinks, Geoffrey M.; Baughman, Ray H.; Kim, Seon Jeong
      The development of practical, cost-effective systems for the conversion of low-grade waste heat to electrical energy is an important area of renewable energy research. We here demonstrate a thermal energy harvester that ...
    • Harvesting Temperature Fluctuations as Electrical Energy Using Torsional and Tensile Polymer Muscles 

      Kim, Shi Hyeong; Lima, M©rcio D.; Kozlov, Mikhail E.; Haines, Carter S.; Spinks, Geoffrey M.; Aziz, Shazed; Choi, Changsoon; Sim, Hyeon Jun; Wang, Xuemin; Lu, Hongbing; Qian, Dong; Madden, John D. W.; Baughman, Ray H.; Kim, Seon Jeong (Royal Soc Chemistry, 2015-09-28)
      Diverse means have been deployed for harvesting electrical energy from mechanical actuation produced by low-grade waste heat, but cycle rate, energy-per-cycle, device size and weight, or cost have limited applications. We ...
    • High-Performance Biscrolled MXene/Carbon Nanotube Yarn Supercapacitors 

      Wang, Z.; Qin, S.; Seyedin, S.; Zhang, J.; Wang, J.; Levitt, A.; Li, Na; Haines, Carter; Ovalle-Robles, R.; Lei, W.; Gogotsi, Y.; Baughman, Ray H.; Razal, J. M.
      Yarn-shaped supercapacitors (YSCs) once integrated into fabrics provide promising energy storage solutions to the increasing demand of wearable and portable electronics. In such device format, however, it is a challenge ...
    • Magnetic Torsional Actuation of Carbon Nanotube Yarn Artificial Muscle 

      Lee, D. W.; Kim, S. H.; Kozlov, Mikhail E.; Lepró, Xavier; Baughman, Ray H.; Kim, S. J.
      Magnetically driven torsional actuation of a multiwalled carbon nanotube (MWNT) yarn was realized by first biscrolling NdFeB magnetic particles into helical yarn corridors to make a magnetic MWNT yarn. The actuating device ...
    • A New Catalyst-Embedded Hierarchical Air Electrode For High-Performance Li-O₂ Batteries 

      Lim, H. -D; Song, H.; Gwon, H.; Park, K. -Y; Kim, J.; Bae, Y.; Kim, H.; Jung, S. -K; Kim, T.; Kim, Y. H.; Lepr©, Xavier; Ovalle-Robles, Raquel; Baughman, Ray H.; Kang, K. (2013-06-05)
      The Li-O₂ battery holds great promise as an ultra-high-energy- density device. However, its limited rechargeability and low energy efficiency remain key barriers to its practical application. Herein, we demonstrate that ...
    • Preparation and Characterization of Hybrid Conducting Polymer–Carbon Nanotube Yarn 

      Foroughi, Javad; Spinks, Geoffrey M.; Ghorbani, Shaban R.; Kozlov, Mikhail E.; Safaei, Farzad; Peleckis, Germanas; Wallace, Gordon G.; Baughman, Ray H. (2011-12-16)
      Hybrid polypyrrole (PPy)-multi walled carbon nanotube(MWNT) yarns were obtained by chemical and electrochemical polymerization of pyrrole on the surface and within the porous interior of twisted MWNT yarns. The material ...
    • Probe Sensor Using Nanostructured Multi-Walled Carbon Nanotube Yarn for Selective and Sensitive Detection of Dopamine 

      Al-Graiti, Wed; Yue, Zhilian; Foroughi, Javad; Huang, Xu-Feng; Wallace, Gordon; Baughman, Ray H.; Chen, Jun
      The demands for electrochemical sensor materials with high strength and durability in physiological conditions continue to grow and novel approaches are being enabled by the advent of new electromaterials and novel fabrication ...
    • Regulation of Morphogenesis and Neural Differentiation of Human Mesenchymal Stem Cells Using Carbon Nanotube Sheets 

      Kim, Jeong Ah; Jang, Eui Yun; Kang, Tae June; Yoon, Sungjun; Ovalle-Robles, Raquel; Rhee, Won Jong; Kim, Taewoo; Baughman, Ray H.; Kim, Yong Hyup; Park, Tai Hyun (2012-04-02)
      In order to successfully utilize stem cells for therapeutic applications in regenerative medicine, efficient differentiation into a specific cell lineage and guidance of axons in a desired direction is crucial. Here, we ...
    • Sequentially Bridged Graphene Sheets with High Strength, Toughness, and Electrical Conductivity 

      Wan, S.; Li, Y.; Mu, Jiuke; Aliev, Ali E.; Fang, Shaoli; Kotov, N. A.; Jiang, L.; Cheng, Q.; Baughman, Ray H.
      We here show that infiltrated bridging agents can convert inexpensively fabricated graphene platelet sheets into high-performance materials, thereby avoiding the need for a polymer matrix. Two types of bridging agents were ...
    • Terahertz Surface Plasmon Polaritons on Freestanding Multi-Walled Carbon Nanotube Aerogel Sheets 

      Nguyen, T. D.; Liu, S.; Lima, Marcio Dias; Fang, Shaoli; Baughman, Ray H.; Nahata, A.; Vardeny, Z. V. (2012-05-08)
      We demonstrate that multi-walled carbon nanotubes (MWCNTs) are capable of supporting surface plasmon-polaritons (SPPs) at terahertz (THz) frequencies. To achieve this, we fabricated sub-100 μm-thick freestanding and highly ...
    • Thermoacoustic Sound Projector: Exceeding the Fundamental Efficiency of Carbon Nanotubes 

      Aliev, Ali E.; Codoluto, Daniel; Baughman, Ray H.; Ovalle-Robles, Raquel; Inoue, Kanzan; Romanov, Stepan A.; Nasibulin, Albert; Kumar, Prashant; Priya, Shashank; Mayo, Nathanael K.; Blottman, John
      The combination of smooth, continuous sound spectra produced by a sound source having no vibrating parts, a nanoscale thickness of a flexible active layer and the feasibility of creating large, conformal projectors provoke ...
    • Thermoacoustic Sound Projector: Exceeding the Fundamental Efficiency of Carbon Nanotubes 

      Aliev, Ali E.; Codoluto, Daniel; Baughman, Ray H.; Ovalle-Robles, Raquel; Inoue, Kanzan; Romanov, Stepan A.; Nasibulin, Albert G.; Kumar, Prashant; Priya, Shashank; Mayo, Nathanael K.; Blottman, John B.
      The combination of smooth, continuous sound spectra produced by a sound source having no vibrating parts, a nanoscale thickness of a flexible active layer and the feasibility of creating large, conformal projectors provoke ...
    • Three-Dimensionally Ordered Macro-/Mesoporous Ni as a Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction 

      Sun, T.; Zhang, C.; Chen, J.; Yan, Y.; Zakhidov, Anvar A.; Baughman, Ray H.; Xu, L. (Royal Society of Chemistry, 2015-04-13)
      Three-dimensionally (3D) ordered macro-/mesoporous (3DOM/m) Ni is fabricated by the chemical reduction deposition method using lyotropic liquid crystals (LLC) to template the mesostructure within the regular voids of a ...