نتایج جستجو برای: liquid exfoliation

تعداد نتایج: 220300  

Journal: :Ultrasonics Sonochemistry 2021

• Ultrasonication-assisted synthesis of MoS 2 nanosheets improved PEC performance. Liquid phase exfoliation was used for with 6 nm thickness. Photocurrent ?-Fe O 3 photoanode significantly increased by heterojunction. /8-MoS showed a thinner space charge layer and reduced flat band potential. p-n junction decreased resistance due to the recombination rate carriers. This study successfully manuf...

Journal: :npj 2D materials and applications 2023

Abstract The development of high-precision large-area optical coatings and devices comprising low-dimensional materials hinges on scalable solution-based manufacturability with control over exfoliation procedure-dependent effects. As such, it is critical to understand the influence technique-induced transition metal dichalcogenide (TMDC) properties that impact design, performance, integration a...

2016
Tianxian Feng Dong Mao Xiaoqi Cui Mingkun Li Kun Song Biqiang Jiang Hua Lu Wangmin Quan

We demonstrate an erbium-doped fiber laser passively Q-switched by a black-phosphorus polyimide film. The multi-layer black-phosphorus (BP) nanosheets were prepared via a liquid exfoliation approach exploiting N-methylpyrrolidone as the dispersion liquid. By mixing the BP nanosheets with polyimide (PI), a piece of BP-PI film was obtained after evaporating the mixture in a petri dish. The BP-PI ...

2014
Joong Tark Han Jeong In Jang Haena Kim Jun Yeon Hwang Hyung Keun Yoo Jong Seok Woo Sua Choi Ho Young Kim Hee Jin Jeong Seung Yol Jeong Kang-Jun Baeg Kilwon Cho Geon-Woong Lee

Layered materials must be exfoliated and dispersed in solvents for diverse applications. Usually, highly energetic probe sonication may be considered to be an unfavourable method for the less defective exfoliation and dispersion of layered materials. Here we show that judicious use of ultrasonic cavitation can produce exfoliated transition metal dichalcogenide nanosheets extraordinarily dispers...

2016
Yeon Hoo Kim Kye Yeop Kim You Rim Choi Young-Seok Shim Jong-Myeong Jeon Jong-Heun Lee Soo Young Kim Seungwu Han Ho Won Jang

Two-dimensional (2D) molybdenum disulfide (MoS2) has been attracting rapidly increasing interest for application in chemoresistive gas sensors owing to its moderate band gap energy and high specific surface area. However, the mechanism of chemoresistive sensing via the adsorption and desorption of gas molecules and the influence of the shape of 2D materials are not well understood yet. Herein w...

Journal: :Nanotechnology 2013
Mustafa Lotya Aliaksandra Rakovich John F Donegan Jonathan N Coleman

We have developed an in situ method to estimate the lateral size of exfoliated nanosheets dispersed in a liquid. Using standard liquid exfoliation and size-selection techniques, we prepared a range of dispersions of graphene, MoS2 and WS2 nanosheets with different mean lateral sizes. The mean nanosheet length was measured using transmission electron microscopy (TEM) to vary from ∼40 nm to ∼1 μm...

2014
Mohammad Khazaei Masao Arai Taizo Sasaki Mehdi Estili Yoshio Sakka

The experimental exfoliation of layered, ternary transition-metal carbide and nitride compounds, known as MAX phases, into two-dimensional (2D) nanosheets, is a great development in the synthesis of novel low-dimensional inorganic systems. Among the MAX phases, Mo-containing ones might be considered as the source for obtaining Mo2C nanosheets with potentially unique properties, if they could be...

2008
Jose A. Aragon-Martin Robert Ritch Jeffrey Liebmann Colm O’Brien Karima Blaaow Franco Mercieca Anthony Spiteri Caroline J. Cobb Karim F. Damji Ahti Tarkkanen Tayebeh Rezaie Anne H. Child Mansoor Sarfarazi

PURPOSE To evaluate genetic susceptibility of lysyl oxidase-like 1 (LOXL1) gene polymorphisms to exfoliation syndrome (XFS) and exfoliation glaucoma (XFG) in a case-control cohort of American and European patients. METHODS DNA from a total of 620 individuals including 287 exfoliation patients and 333 healthy control subjects were extracted by standard methods. Three single nucleotide polymorp...

2015
Damien Hanlon Claudia Backes Evie Doherty Clotilde S Cucinotta Nina C Berner Conor Boland Kangho Lee Andrew Harvey Peter Lynch Zahra Gholamvand Saifeng Zhang Kangpeng Wang Glenn Moynihan Anuj Pokle Quentin M Ramasse Niall McEvoy Werner J Blau Jun Wang Gonzalo Abellan Frank Hauke Andreas Hirsch Stefano Sanvito David D O'Regan Georg S Duesberg Valeria Nicolosi Jonathan N Coleman

Few-layer black phosphorus (BP) is a new two-dimensional material which is of great interest for applications, mainly in electronics. However, its lack of environmental stability severely limits its synthesis and processing. Here we demonstrate that high-quality, few-layer BP nanosheets, with controllable size and observable photoluminescence, can be produced in large quantities by liquid phase...

Journal: :Journal of Nippon Medical School = Nippon Ika Daigaku zasshi 2007
Hideaki Oharazawa Hisaharu Suzuki Hironori Matsui Toshihiko Shiwa Hiroshi Takahashi Kunitoshi Ohara

True exfoliation of the lens capsule is known to be associated with glassblower's cataract, which is caused by extended exposure to excessive heat. Furthermore, inflammation and trauma are also considered to be predisposing factors. We report two cases of true exfoliation that were confirmed after cataract surgery. Neither patient exhibited true exfoliation before cataract surgery. In addition,...

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