Yolalmaz, Alim; Hanifehpour, Farhad; Esentürk, Okan; Danışman, Mehmet Fatih (null; 2016-10-05)
Chemical Interactions of Nano Islandic Graphene Grown on Titanium Dioxide Substrates by Chemical Vapor Deposition
Karamat, S.; Khalique, U.; Usman, Arslan; Javaid, Asad; Oral, Ahmet (2022-03-01)
In this work, direct growth of graphene is carried out on TiO2 (110) substrates by chemical vapor deposition. For few device applications, it is convenient to grow graphene directly on the dielectric substrates rather than metal foil to minimize transfer and surface interface defects. Raman spectrum support graphene growth on TiO2 substrate by exhibiting D and G peaks. Graphene covered the whole TiO2 substrate with few areas where higher growth of carbon atoms occurs. The contrast of SEM images clearly show...
Chemical vapor deposition of boron carbide
Karaman, Mustafa; Özbelge, Önder; Department of Chemical Engineering (2007)
Boron carbide was produced on tungsten substrate in a dual impinging-jet CVD reactor from a gas mixture of BCl3, CH4, and H2. The experimental setup was designed to minimise the effect of mass transfer on reaction kinetics, which, together with the on-line analysis of the reactor effluent by FTIR, allowed a detailed kinetic investigation possible. The phase and morphology studies of the products were made by XPS, XRD,micro hardness and SEM methods. XPS analysis showed the existence of chemical states attrib...
Chemical ionization of chloromethanes for matrix isolation spectroscopy
Hacaloğlu, Jale (1989-01-01)
A chemical ionization source from mass spectrometry has been used with CCl4, CHCl3 and CH2Cl2/argon mixtures for matrix isolation spectroscopy in the IR and visible-near UV regions. The major product absorptions in both regions have been observed and assigned previously. The comparison of positive and negative ion operation is striking for CCl4; the yields of CCl+3, CCl+4 and Cl+3 are increased and HCl−2 is not produced in positive ion operation.
Chemical Vapour Deposition of Graphene with Re useable Pt and Cu substrates for Flexible Electronics
Karamat, Shumaıla; Sonusen, Selda; Çelik, Ümit; Uysallı, Yiğit; Oral, Ahmet (null; 2015-03-06)
Graphene has gained the attention of scientific world due to its outstanding physical properties. The future demand of flexible electronics such as solar cells, light emitting diodes, photo-detectors and touch screen technology requires more exploration of graphene properties on flexible substrates. The most interesting application of graphene is in organic light emitting diodes (OLED) where efforts are in progress to replace brittle indium tin oxide (ITO) electrode with a flexible graphene electrode becaus...
Citation Formats
D. Üner, “CHEMICAL REACTIVITY IN CONFINED SPACE TIMES,” 2017, Accessed: 00, 2021. [Online]. Available: