Abstract: A method for etching at least a portion of a layer based on a III-N material includes exposing a least one portion of an upper face of the III-N layer to a plasma treatment with bias voltage pulsing based on chlorine, wherein the plasma treatment is configured to present a duty cycle comprised between 20% and 80%. A first non-zero polarization bias is applied to the substrate during Ton, and a second polarization bias lesser than the first non-zero polarization bias or no polarization bias is applied, during Toff, so as to etch the portion of the III-N layer. The duration of the etching is significantly reduced to obtain a satisfying quality of the III-N layer for the operation of a microelectronic device, such as a transistor or a diode.

Abstract: A method for etching at least one portion of a III-N material layer, including the implementation of the following steps of: a) first etching of a first part of the thickness of the portion of the III-N material layer, implemented by using a first plasma including chlorine; b) exposing at least one part of a remaining thickness of the portion of the III-N material layer to a second plasma including helium or hydrogen; c) chlorinating the part of the remaining thickness of the portion of the III-N material layer, transforming the part of the remaining thickness of the portion of the III-N material layer into a chlorinated material layer; d) second etching of the chlorinated material layer, implemented by using a third plasma including argon.

Abstract: A method and system for handling media at a communication entity, wherein the media is associated with a communication session that is capable of entering an active state and an inactive state. The method comprises determining when the communication session is in an inactive state, causing the media associated with the communication session to be stored when the communication session has entered an inactive state, and causing the stored media to be conveyed to a user of the communication entity upon determination that the communication session has re-entered an active state.

Abstract: A method and system for handling media at a communication entity, wherein the media is associated with a communication session that is capable of entering an active state and an inactive state. The method comprises determining when the communication session is in an inactive state, causing the media associated with the communication session to be stored when the communication session has entered an inactive state, and causing the stored media to be conveyed to a user of the communication entity upon determination that the communication session has re-entered an active state.