We　pursue　unique　direct　writing　approaches　with　femtosecond　fiber　laser　and　relevant　photonic　manufacturing　in　developing　various　micro-nano-devices　for　microelectronics,　energy　and　sensing　applications.　In　this　paper,　we　will　present　our　research　progresses　on　four　directions:　direct　writing　of　microball　lenses　for　super-wide　angle　imaging,　developing　innovative　Au/reduce　graphene　oxide(Au/rGO)　super-capacitors　with　high　rates　and　fast　response,　multilayer　super-capacitors　directly　written　on　polyimide　and　interdigitated　capacitance　sensors.