Deposition of TiN on drill bits using a Sheet Plasma Negative Ion Source - Noguera, Virginia; Arciaga, Marko; Awayan, Rainier; Blantocas, Gene; Villorente, Liza; Monasterial, Jonathan; Lazarte, Jeni; Hismaña, Jufel; Pineda, Prydex; Fabonan, Elaine; et al. (Proceedings of the 21st Samahang Pisika ng Pilipinas Physics Congress, 2003)