| 摘要 |
<p>Provided is a field emission device capable of stable mass-production of nanofibers having desired performance. The field emission device (20) is equipped with a case (100), a collector (150), a nozzle block (110), and a power device (160), the power device (160) having a positive electrode that connects to the collector (150), and a negative electrode that connects to the nozzle block (110) and the case (100), wherein the outer circumference of an insulation member (152) is located on the outer side than the outer circumference of the collector (150) when looking at the collector (150) from the side of the nozzle block (110), and ?a=6mm?and ?a+b=50mm?are fulfilled when calling the thickness of the insulation member (152), ?a?, and the distance between the outer circumference of the insulation member (152) and the outer circumference of the collector (150), ?b?.</p> |
