Abstract
AbstractThin‐film diamond temperature sensor arrays used in harsh aerospace environments were investigated using micro‐Raman spectroscopy. Raman spectra of three of the samples obtained under specific experimental conditions are presented. On annealing a sample, an increase in graphite content and restoration of long‐range order in its lattice are suggested. Additionally, an untreated sample on irradiation with 1064 nm radiation from a low‐power continuous‐wave Nd: YAG laser exhibits an increase in graphite content. Similar irradiation of an annealed sample shows an increase in the graphite content, a decrease in diamond‐like carbon content and the appearance of a band at 1607 cm−1.
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