نتایج جستجو برای: liquid exfoliation

تعداد نتایج: 220300  

Journal: :Physical chemistry chemical physics : PCCP 2015
Rozana Bari Dorsa Parviz Fardin Khabaz Christopher D Klaassen Shane D Metzler Matthew J Hansen Rajesh Khare Micah J Green

Here we demonstrate through experiment and simulation the polymer-assisted dispersion of inorganic 2D layered nanomaterials such as boron nitride nanosheets (BNNSs), molybdenum disulfide nanosheets (MoS2), and tungsten disulfide nanosheets (WS2), and we show that spray drying can be used to alter such nanosheets into a crumpled morphology. Our data indicate that polyvinylpyrrolidone (PVP) can a...

2014
Meng Zhang Richard C. T. Howe Robert I. Woodward Edmund J. R. Kelleher Felice Torrisi Guohua Hu Sergei V. Popov J. Roy Taylor Tawfique Hasan M. Zhang R. C. T. Howe R. I. Woodward E. J. R. Kelleher F. Torrisi G. Hu S. V. Popov J. R. Taylor T. Hasan

We fabricate a free-standing few-layer molybdenum disulfide (MoS2)-polymer composite by liquid phase exfoliation of chemically pristine MoS2 crystals and use this to demonstrate a wideband tunable, ultrafast mode-locked fiber laser. Stable, picosecond pulses, tunable from 1535 nm to 1565 nm, are generated, corresponding to photon energies below the MoS2 material bandgap. These results contribut...

Journal: :Small 2016
Liyong Niu Jonathan N Coleman Hua Zhang Hyeonsuk Shin Manish Chhowalla Zijian Zheng

Tremendous efforts have been devoted to the synthesis and application of two-dimensional (2D) nanomaterials due to their extraordinary and unique properties in electronics, photonics, catalysis, etc., upon exfoliation from their bulk counterparts. One of the greatest challenges that scientists are confronted with is how to produce large quantities of 2D nanomaterials of high quality in a commer...

2017
Vezio Bianchi Tian Carey Leonardo Viti Lianhe Li Edmund H Linfield A Giles Davies Alessandro Tredicucci Duhee Yoon Panagiotis G Karagiannidis Lucia Lombardi Flavia Tomarchio Andrea C Ferrari Felice Torrisi Miriam S Vitiello

Saturable absorbers (SA) operating at terahertz (THz) frequencies can open new frontiers in the development of passively mode-locked THz micro-sources. Here we report the fabrication of THz SAs by transfer coating and inkjet printing single and few-layer graphene films prepared by liquid phase exfoliation of graphite. Open-aperture z-scan measurements with a 3.5 THz quantum cascade laser show a...

Journal: :ACS nano 2012
Felice Torrisi Tawfique Hasan Weiping Wu Zhipei Sun Antonio Lombardo Tero S Kulmala Gen-Wen Hsieh Sungjune Jung Francesco Bonaccorso Philip J Paul Daping Chu Andrea C Ferrari

We demonstrate inkjet printing as a viable method for large-area fabrication of graphene devices. We produce a graphene-based ink by liquid phase exfoliation of graphite in N-methylpyrrolidone. We use it to print thin-film transistors, with mobilities up to ∼95 cm(2) V(-1) s(-1), as well as transparent and conductive patterns, with ∼80% transmittance and ∼30 kΩ/□ sheet resistance. This paves th...

2013
Ming Zhou Tian Tian Xuanfu Li Xudong Sun Juan Zhang Ping Cui Jie Tang Lu-Chang Qin

1 Division of Functional Materials and Nano-Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China 2 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315201, China 3 National Institute for Materials Sciences, Tsukuba 305-0047, Japan 4 Department of Physics and Astronomy, University of North Carolina at ...

Journal: :Small structures 2021

Black phosphorus (BP) as a rising star among 2D materials has attracted attention for wide range of applications due to its fascinating properties. The key point the real application phosphorene depends on exfoliation technique produce high-quality nanosheets. In recent years, tremendous efforts have been made in preparation and energy storage phosphorene-based hybrid electrodes. Herein, state-...

Journal: :Journal of visualized experiments : JoVE 2016
Claudia Backes Damien Hanlon Beata M Szydlowska Andrew Harvey Ronan J Smith Thomas M Higgins Jonathan N Coleman

We summarize recent advances in the production of liquid-exfoliated transition metal dichalcogenide (TMD) nanosheets with controlled size and thickness. Layered crystals of molybdenum disulphide (MoS2) and tungsten disulphide (WS2) are exfoliated in aqueous surfactant solution by sonication. This yields highly polydisperse mixtures containing nanosheets with broad size and thickness distributio...

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