MODIFICATION OF ELECTRONIC MATERIALS WITH MeV IONS

STRAIN/DAMAGE IN CRYSTALLINE MATERIALS BOMBARDED BY MeV IONS: RECRYSTALLIZATION OF GaAs BY HIGH-DOSE IRRADIATION

MeV ion irradiation effects on semiconductor crystals, GaAs(lOO) and Si (111) and on an insulating crystal CaF 2 (111) have been studied by the x-ray rocking curve technique using a double crystal x-ray diffractometer. The results on GaAs are particularly interesting. The strain developed by ion irradiation in the surface layers of GaAs <1go> ~aturates to a certain level after a high dose irrad...

fabrication of new ion sensitive field effect transistors (isfet) based on modification of junction-fet for analysis of hydronium, potassium and hydrazinium ions

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

Modification of materials with bioactive peptides.

Nanoscale Modification of Cementitious Materials

This research investigates changes in the nanostructure and the nanoscale local mechanical properties of cement paste with microand nano-modifiers. Silica fume and multiwall carbon nanotubes (MWCNTs) were used as microand nano-modifiers. An effective method of dispersing CNTs in cement matrix was developed. A detailed study on the effects of CNTs concentration and aspect ratio on the fracture p...

Improved Iron Phosphate Corrosion Resistance by Modification with Metal Ions

ron phosphate coatings have found a wide range of use in the metalI finishing industry as a convenient method for achieving reasonably high levels of corrosion resistance. Flexibility of processing parameters and ease of use are probably the biggest reasons that iron phosphating enjoys its continued popularity. The corrosion resistance of iron phosphate coatings can be dramatically improved by ...