ABSTRACT
The sun sensor has been used to determine the orientation of the sun in all the satellites in the space and rovers on the Mars. However, the conventional sun sensors are too bulky for their use in the miniaturised satellites such as nanosatellite due to the budget restriction on mass or size. Thus, the sun sensor has to be also miniaturised in order to meet the mass or size requirement. During the development of micro sun sensor, there was a ghost image problem caused by the internal reflection within the packaged micro sun sensor. This problem was solved by utilising silicon nanotips as an antireflection surface. Thus, this chapter will present different methods of forming silicon nanotips using plasma etching process and how the silicon nanotips solved the ghost image issue as an example of biomimetics after reviewing the micro sun sensors.
