نتایج جستجو برای: fluorine

تعداد نتایج: 7204  

2011
Freddie Withers Saverio Russo Marc Dubois Monica F Craciun

We demonstrate the possibility to tune the electronic transport properties of graphene mono-layers and multi-layers by functionalisation with fluorine. For mono-layer samples, with increasing the fluorine content, we observe a transition from electronic transport through Mott variable range hopping (VRH) in two dimensions to Efros-Shklovskii VRH. Multi-layer fluorinated graphene with high conce...

2012
Nooki Mehdi Fenglin Huang Min Zhang

New synthetic methods and fluorinated reagents have been developed,that facilitate the introduction of fluorine or fluorocontaining units into small building blocks, designer compounds, and materials of new and often surprising properties. However,in spite of all these advances, we are still lacking sufficient insight into the fundamental aspects of fluoro-organic chemistry,particularly in the ...

Journal: :The Analyst 2009
Arthur W Snow Edward E Foos Melissa M Coble Glenn G Jernigan Mario G Ancona

An omega-fluorine-labeled oxyethylene thiol ligand, F(CH2CH2O)2CH2CH2SH, was synthesized, characterized and incorporated into mixed self-assembled monolayers with CH3(OCH2CH2)3SH onto a planar gold substrate and onto 2 nm gold nanoclusters. The fluorine-labeled nanocluster was self-assembled onto gold substrates using alkane dithiol (HS(CH2)nSH; n = 5, 8, 11) and oxyethylene dithiol (HS(CH2CH2O...

2000
C. D. Marsh N. E. Moiseiwitsch G. R. Booker

A comprehensive study is made of the behavior and effects of fluorine in n-polysilicon layers. The polysilicon is deposited in a conventional low pressure chemical vapor deposition furnace on ~100! silicon wafers, implanted with 1310 cm F and 1310 cm As and annealed at 850, 950, 1015, and 1065 °C. Sheet resistance, transmission electron microscopy ~TEM!, and secondary ion mass spectroscopy are ...

2010
CINDY ANNA BAUMANN Hanns U. Zeilhofer

Intensive investigations during the last years have shown that metabotropic glutamate receptors are involved in numerous neurodegenerative diseases such as M. Parkinson, M. Alzheimer and M. Huntington as well as other central nervous system disorders including neurogenic pain, epilepsy, depression and drug addiction. The neurobiological basis of these impairments is, however, still not well und...

Journal: :Science 1883

Journal: :Nature 1971

2012
Helmut Martin Hügel Takayoshi Kobayashi Ophelia Han

The generated resist based defects on the template in addition to the presence of particles and contaminants is critical for ultraviolet curing of nanoimprint lithographic fabrication. This procedure is proven to be suitable for advanced resist material design under the process conditions. Nanoimprint resist material containing an ultraviolet reactive fluorine surfactant was developed to modify...

1998
J. S. Patrick T. Pradeep

ion of fluorine atoms occurs for each of the projectile ions examined, with up to five fluorine atoms being abstracted by W, two F atoms being abstracted in the case of CI and PCl projectiles, and just one fluorine atom being abstracted by Si, P, I, and Br-containing ions (see Table 1). The maximum numbers of atoms abstracted in ion/surface reactions are similar [26–29], although the product io...

2018
A. Hårsta J. - O. Carlsson

Chemical vapour deposition (CVD) of the superconducting 2:2:1:2 phase in the Bi-Sr-Ca-Cu-0 system from different metalorganic precursors is thermodynamically investigated. Both precursors without fluorine and fluorine-containing precursors were employed. The oxygen source was O, H,O, O,+H,O or N,O. The effect of different deposition parameters on the extension of the region where the 2:2:1:2 ph...

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