A new method using V-grooves for dielectric isolation of i.i.l. circuits is described. Basic devices and circuits have been realised and tested. The process results in a simplified, low-temperature isolation step and yields an increased packing density.
Declercq, M. J., De Moor, J. P., Jespers, P. G., & Sevrin, A. M. (1976). V-groove-isolated i.i.l. circuits. Electronics Letters, 12(6), 150-151. https://hdl.handle.net/2078.5/67735 (Original work published 1976)