نتایج جستجو برای: chemical exfoliation

تعداد نتایج: 380518  

Journal: :Chemical communications 2015
Takuya Morishita Hirotaka Okamoto Yoshihide Katagiri Mitsumasa Matsushita Kenzo Fukumori

Boron nitride nanosheets (BNNSs) with micron-sized edges were prepared in high yields by direct exfoliation of bulk hexagonal boron nitrides using ionic liquids (ILs). The ILs strongly attached onto BNNS surfaces, and dramatically enhanced the exfoliation, giving highly concentrated BNNS dispersions (∼1.9 mg mL(-1)) and yields reaching ∼50%.

Journal: :anatomical sciences journal 0
fatemeh jahanimoghadam department of pediatric dentistry, dental school, oral & dental research center, kerman university of medical sciences, kerman, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences) reihaneh hosseinifar department of pediatric dentistry, dental school, kerman university of medical sciences, kerman, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمان (kerman university of medical sciences)

although the delayed exfoliation of primary teeth among children is a common dental problem, simultaneous presence of primary teeth and corresponding successors is a rare feature in adults. this paper reports an unusual case in which both permanent teeth (molars, premolars, and canines) and primary teeth were present simultaneously. this report describes questions concerning the etiology of ove...

Journal: :Molecular Vision 2008
Masaki Tanito Masayoshi Minami Masakazu Akahori Sachiko Kaidzu Yasuyuki Takai Akihiro Ohira Takeshi Iwata

PURPOSE To evaluate the association of lysyl oxidase like 1 (LOXL1) gene variants in Japanese patients with open-angle glaucoma. METHODS We evaluated the association of three LOXL1 variants (rs1048661, rs3825942, and rs2165241) in 142 Japanese patients with exfoliation syndrome (EX; n=59) and exfoliation glaucoma (EG; n=83) as well as in 251 control patients aged 70 years or older with primar...

2016
Fangqing Xia Huaisong Yong Xiao Han Dazhi Sun

Exfoliation of layered inorganic nanomaterials into single-layered sheets has been widely interested in materials chemistry and composite fabrication. Here, we report the exfoliation of layered zirconium phosphate nanoplatelets by using small molecule intercalating agents in ionic liquids, which opens a new platform for fabricating single-layered inorganic materials from synthetic layered compo...

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...

2007
LaShanda T. James Korley Shawna M. Liff Nitin Kumar Gareth H. McKinley Paula T. Hammond

Controlling the level of dispersion of silicate layers in polymer matrices through intermolecular interactions and exploiting these interactions to enhance thermomechanical behavior are key challenges in the field of polymer nanocomposites. In this investigation, unmodified Laponite platelets are dispersed in a segmented polyurethane containing a polar, hydrophilic soft segment and a hydrophobi...

2000
C. Nguyen R. B. Gregory

Exfoliation of SiC by hydrogen implantation and subsequent annealing forms the basis for a thi n-fiim separation process ~vhichqwhen combined with hydrophilic wafer bonding. can be exploited to produce siIicon-carbide-cm-insulator, SiCOI. Sic thin films produced by this process exhibit unacceptably high resistivity because defects generated by the implant neutralize electrical carriers. Separat...

Journal: :Scientific reports 2016
Sheng Yuan Sébastien Linas Catherine Journet Philippe Steyer Vincent Garnier Guillaume Bonnefont Arnaud Brioude Bérangère Toury

Within the context of emergent researches linked to graphene, it is well known that h-BN nanosheets (BNNSs), also referred as 2D BN, are considered as the best candidate for replacing SiO2 as dielectric support or capping layers for graphene. As a consequence, the development of a novel alternative source for highly crystallized h-BN crystals, suitable for a further exfoliation, is a prime scie...

Journal: :Small 2010
Jong Hak Lee Dong Wook Shin Victor G Makotchenko Albert S Nazarov Vladimir E Fedorov Jin Hyoung Yoo Seong Man Yu Jae-Young Choi Jong Min Kim Ji-Beom Yoo

Graphene is a 2D one-atom-thick layer that has attracted enormous scientific attention on account of its extraordinary electronic and mechanical properties resulting from the hexagonally arrayed sp-hybridized carbon atom structure. Several efforts have been made to use graphene in devices and composites. The strong covalent bonds of carbon atoms provide high mechanical and thermal properties an...

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