CINEMA 21

2d 21 The Sylvania Type 2D21 is a miniature four element thyratron with negative control character. In this work, we introduce helical chirality into 2D COFs using confurationally stable enantiopure and racemic [5]helicenes as linkers in

2d tokek, The 2D21 thyratron is, as usual, a gas filled valve, in this case the gas at low pressure is xenon. This example is of tetrode construction and was desned.