Now showing items 1-20 of 217

    • Surfactant-assisted individualization and dispersion of boron nitride nanotubes 

      McWilliams, Ashleigh D. Smith; Reyes, Carlos A. de los; Liberman, Lucy; Ergülen, Selin; Talmon, Yeshayahu; Pasquali, Matteo; A. Martí, Angel (2019)
      Boron nitride nanotubes (BNNTs) belong to a novel class of material with useful thermal, electronic and optical properties. However, the study and the development of applications of this material requires the formation of ...
    • ‘Unzipping’ of twin lamella in nanotwinned nickel nanowires under flexural bending 

      Wang, Binjun; Zhang, Hongti; Lou, Jun; Lu, Yang (2018)
      We report the fabrication of nickel nanowires with parallel growth-twin structures (‘twin lamella’ along the wire axis) by electrochemical deposition, and demonstrate an interesting twin ‘unzipping’ phenomenon in such ...
    • Effects of etchants in the transfer of chemical vapor deposited graphene 

      Wang, M.; Yang, E.H.; Vajtai, R.; Kono, J.; Ajayan, P.M. (2018)
      The quality of graphene can be strongly modified during the transfer process following chemical vapor deposition (CVD) growth. Here, we transferred CVD-grown graphene from a copper foil to a SiO2/Si substrate using wet ...
    • Synthesis and 3D Interconnected Nanostructured h-BN-Based Biocomposites by Low-Temperature Plasma Sintering: Bone Regeneration Applications 

      Gautam, Chandkiram; Chakravarty, Dibyendu; Gautam, Amarendra; Tiwary, Chandra Sekhar; Woellner, Cristiano Francisco; Mishra, Vijay Kumar; Ahmad, Naseer; Ozden, Sehmus; Jose, Sujin; Biradar, Santoshkumar; Vajtai, Robert; Trivedi, Ritu; Galvao, Douglas S.; Ajayan, Pulickel M. (2018)
      Recent advances and demands in biomedical applications drive a large amount of research to synthesize easily scalable low-density, high-strength, and wear-resistant biomaterials. The chemical inertness with low density ...
    • A common tattoo chemical for energy storage: henna plant-derived naphthoquinone dimer as a green and sustainable cathode material for Li-ion batteries 

      Miroshnikov, Mikhail; Kato, Keiko; Babu, Ganguli; Divya, Kizhmuri P.; Arava, Leela Mohana Reddy; Ajayan, Pulickel M.; John, George (2018)
      The burgeoning energy demands of an increasingly eco-conscious population have spurred the need for sustainable energy storage devices, and have called into question the viability of the popular lithium ion battery. A ...
    • Scaling law for excitons in 2D perovskite quantum wells 

      Blancon, J.-C.; Stier, A.V.; Tsai, H.; Nie, W.; Stoumpos, C.C.; Traoré, B.; Pedesseau, L.; Kepenekian, M.; Katsutani, F.; Noe, G.T.; Kono, J.; Tretiak, S.; Crooker, S.A.; Katan, C.; Kanatzidis, M.G.; Crochet, J.J.; Even, J.; Mohite, A.D. (2018)
      Ruddlesden-Popper halide perovskites are 2D solution-processed quantum wells with a general formula A2A'n-1M n X3n+1, where optoelectronic properties can be tuned by varying the perovskite layer thickness (n-value), and ...
    • Ultrafast probes of electron–hole transitions between two atomic layers 

      Wen, Xiewen; Chen, Hailong; Wu, Tianmin; Yu, Zhihao; Yang, Qirong; Deng, Jingwen; Liu, Zhengtang; Guo, Xin; Guan, Jianxin; Zhang, Xiang; Gong, Yongji; Yuan, Jiangtan; Zhang, Zhuhua; Yi, Chongyue; Guo, Xuefeng; Ajayan, Pulickel M.; Zhuang, Wei; Liu, Zhirong; Lou, Jun; Zheng, Junrong (2018)
      Phase transitions of electron-hole pairs on semiconductor/conductor interfaces determine fundamental properties of optoelectronics. To investigate interfacial dynamical transitions of charged quasiparticles, however, remains ...
    • Synergetic photoluminescence enhancement of monolayer MoS2 via surface plasmon resonance and defect repair 

      Zeng, Yi; Chen, Weibing; Tang, Bin; Liao, Jianhui; Lou, Jun; Chen, Qing (2018)
      The weak light-absorption and low quantum yield (QY) in monolayer MoS2 are great challenges for the applications of this material in practical optoelectronic devices. Here, we report on a synergistic strategy to obtain ...
    • Carbon Nanotubes and Related Nanomaterials: Critical Advances and Challenges for Synthesis toward Mainstream Commercial Applications 

      Rao, Rahul; Pint, Cary L.; Islam, Ahmad E.; Weatherup, Robert S.; Hofmann, Stephan; Meshot, Eric R.; Wu, Fanqi; Zhou, Chongwu; Dee, Nicholas; Amama, Placidus B.; Carpena-Nuñez, Jennifer; Shi, Wenbo; Plata, Desiree L.; Penev, Evgeni S.; Yakobson, Boris I.; Balbuena, Perla B.; Bichara, Christophe; Futaba, Don N.; Noda, Suguru; Shin, Homin; Kim, Keun Su; Simard, Benoit; Mirri, Francesca; Pasquali, Matteo; Fornasiero, Francesco; Kauppinen, Esko I.; Arnold, Michael; Cola, Baratunde A.; Nikolaev, Pavel; Arepalli, Sivaram; Cheng, Hui-Ming; Zakharov, Dmitri N.; Stach, Eric A.; Zhang, Jin; Wei, Fei; Terrones, Mauricio; Geohegan, David B.; Maruyama, Benji; Maruyama, Shigeo; Li, Yan; Adams, W. Wade; Hart, A. John (2018)
      Advances in the synthesis and scalable manufacturing of single-walled carbon nanotubes (SWCNTs) remain critical to realizing many important commercial applications. Here we review recent breakthroughs in the synthesis of ...
    • Spatially-Resolved Photoluminescence of Monolayer MoS2 under Controlled Environment for Ambient Optoelectronic Applications 

      Birmingham, Blake; Yuan, Jiangtan; Filez, Matthias; Fu, Donglong; Hu, Jonathan; Lou, Jun; Scully, Marlan O.; Weckhuysen, Bert M.; Zhang, Zhenrong (2018)
      Monolayer (ML) MoS2 has become a very promising two-dimensional material for photorelated applications, potentially serving as the basis for an ultrathin photodetector, switching device, or transistors because of its strong ...
    • Molecular Simulation of MoS2 Exfoliation 

      Zhou, Guoqing; Rajak, Pankaj; Susarla, Sandhya; Ajayan, Pulickel M.; Kalia, Rajiv K.; Nakano, Aiichiro; Vashishta, Priya (2018)
      A wide variety of two-dimensional layered materials are synthesized by liquid-phase exfoliation. Here we examine exfoliation of MoS2 into nanosheets in a mixture of water and isopropanol (IPA) containing cavitation bubbles. ...
    • High photoresponse of individual WS2 nanowire-nanoflake hybrid materials 

      Asres, Georgies Alene; Järvinen, Topias; Lorite, Gabriela S.; Mohl, Melinda; Pitkänen, Olli; Dombovari, Aron; Tóth, Geza; Spetz, Anita Lloyd; Vajtai, Robert; Ajayan, Pulickel M.; Lei, Sidong; Talapatra, Saikat; Kordas, Krisztian (2018)
      van der Waals solids have been recognized as highly photosensitive materials that compete conventional Si and compound semiconductor based devices. While 2-dimensional nanosheets of single and multiple layers and 1-dimensional ...
    • Isotropic Seebeck coefficient of aligned single-wall carbon nanotube films 

      Fukuhara, Kengo; Ichinose, Yota; Nishidome, Hiroyuki; Yomogida, Yohei; Katsutani, Fumiya; Komatsu, Natsumi; Gao, Weilu; Kono, Junichiro; Yanagi, Kazuhiro (2018)
      How the morphology of a macroscopic assembly of nanoobjects affects its properties is a long-standing question in nanomaterials science and engineering. Here, we examine how the thermoelectric properties of a flexible thin ...
    • Carbon nanotube woven textile photodetector 

      Zubair, Ahmed; Wang, Xuan; Mirri, Francesca; Tsentalovich, Dmitri E.; Fujimura, Naoki; Suzuki, Daichi; Soundarapandian, Karuppasamy P.; Kawano, Yukio; Pasquali, Matteo; Kono, Junichiro (2018)
      The increasing interest in mobile and wearable technology demands the enhancement of functionality of clothing through incorporation of sophisticated architectures of multifunctional materials. Flexible electronic and ...
    • Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor 

      Stier, A.V.; Wilson, N.P.; Velizhanin, K.A.; Kono, J.; Xu, X.; Crooker, S.A. (2018)
      We report 65 T magnetoabsorption spectroscopy of exciton Rydberg states in the archetypal monolayer semiconductor WSe2. The strongly field-dependent and distinct energy shifts of the 2s, 3s, and 4s excited neutral excitons ...
    • High-yield single-step catalytic growth of graphene nanostripes by plasma enhanced chemical vapor deposition 

      Hsu, Chen-Chih; Bagley, Jacob D.; Teague, Marcus L.; Tseng, Wei-Shiuan; Yang, Kathleen L.; Zhang, Yiran; Li, Yiliang; Li, Yilun; Tour, James M.; Yeh, N.-C. (2018)
      We report a single-step growth process of graphene nanostripes (GNSPs) by adding certain substituted aromatics (e.g., 1,2-dichlorobenzene) as precursors during the plasma enhanced chemical vapor deposition (PECVD). Without ...
    • Vacuum Bloch–Siegert shift in Landau polaritons with ultra-high cooperativity 

      Li, Xinwei; Bamba, Motoaki; Zhang, Qi; Fallahi, Saeed; Gardner, Geoff C.; Gao, Weilu; Lou, Minhan; Yoshioka, Katsumasa; Manfra, Michael J.; Kono, Junichiro (2018)
      A two-level system resonantly interacting with an a.c. magnetic or electric field constitutes the physical basis of diverse phenomena and technologies. However, Schrödinger’s equation for this seemingly simple system can ...
    • Continuous transition between weak and ultrastrong coupling through exceptional points in carbon nanotube microcavity exciton–polaritons 

      Gao, Weilu; Li, Xinwei; Bamba, Motoaki; Kono, Junichiro (2018)
      Non-perturbative coupling of photons and excitons produces hybrid particles, exciton–polaritons, which have exhibited a variety of many-body phenomena in various microcavity systems. However, the vacuum Rabi splitting ...
    • Design principles for electronic charge transport in solution-processed vertically stacked 2D perovskite quantum wells 

      Tsai, Hsinhan; Asadpour, Reza; Blancon, Jean-Christophe; Stoumpos, Constantinos C.; Even, Jacky; Ajayan, Pulickel M.; Kanatzidis, Mercouri G.; Alam, Muhammad Ashraful; Mohite, Aditya D.; Nie, Wanyi (2018)
      State-of-the-art quantum-well-based devices such as photovoltaics, photodetectors, and light-emission devices are enabled by understanding the nature and the exact mechanism of electronic charge transport. Ruddlesden-Popper ...
    • A room-temperature mid-infrared photodetector for on-chip molecular vibrational spectroscopy 

      Zheng, Bob; Zhao, Hangqi; Cerjan, Ben; Yazdi, Sadegh; Ringe, Emilie; Nordlander, Peter; Halas, Naomi J. (2018)
      Infrared (IR) photodetection is of major scientific and technical interest since virtually all molecules exhibit characteristic vibrational modes in the mid-infrared region of the spectrum, giving rise to molecular ...