Isotopic and Micro-Raman investigation of Interplane-

Isotopic and Micro-Raman investigation of Interplanetary Dust Particles Collected during 2003 Earth passage through Comet Grigg-Skjellerup Dust Stream

Isotopic and Micro-raman Investigation of Interplanetary Dust Particles Collected during 2003 Earth Passage through Comet Grigg-skjellerup Dust

Introduction: In April 2003, NASA flew stratospheric dust collectors to coincide with the expected passage of the Earth through the dust trail of comet Grigg-Skjellerup. Whether any Grigg-Skjellerup particles were collected (along with “normal” Interplanetary Dust Particles or IDPs) and how such would be recognized is still uncertain, though there is evidence for unusual noble gases in some of ...

Laser Micro-Raman Spectroscopy of CVD Nanocrystalline Diamond Thin Film

Laser micro-Raman spectroscopy is an ideal tool for assessment and characterization of various types of carbon-based materials. Due to its special optical properties (CrN) coated stainless steel substrates. NCD films have been investigated by laser micro-Raman spectroscopy. The fingerprint of diamond based materials is in the spectral region of 1000-1600 cm-1 in the first order of Raman scatter...

An Investigation on Two Types of Crystalline Micro-diamond Film Coated Tools Lapping with Sapphire Wafer

Two types of micron-diamond films were prepared on YG6 substrate by hot filament chemical vapor deposition(HFCVD) method. Morphology and orientation of crystalline growth were evaluated by SEM and XRD. Diamond film coated tools and sapphire wafer’ surface before and after lapping experiment  were contrasted. The results indicated that a significant change in Raman spectrum of two types of micro...

کاربرد طیف‌بینی میکرورامان در شناسایی غیرتخریبی بست‌های نقاشی ایرانی

Micro-Raman spectroscopy is recently advocated to be used for the identification of organic mediums of paintings although it is mainly used for identifying artists’ pigments. The current paper presents an effort for estimating the feasibility of micro-Raman spectroscopy for identifying Persian binding mediums used in historical paintings. To do so, samples were prepared in two main groups based...