a a b Element TIK NbL At % 90.99 9.01 Totals 100.00 o 30 Ti Ti ka, Nb d Ti Cr b 1 2 3 4 5 (keV) Nb La, 6.) If you gain results above for any material, what could be the main principles of surface characterization test? 13 P 7.) In your work, you read two terms in technical spesifications: (1) N-isopropylacrylamide-co- hydroxyethyl methacrylate (II)N-i isopropylacrylamide - hydroxyethyl methacrylate composite. They are similar or different? Please explain clearly. 10 P