Very Sharp Platinum Tips by Electrochemical Etching

Very sharp platinum tips Martin Kupper 0830965Sine loop program for the etchingamp_v = 1000m_delay = 0.001list_v = {0.309, 0.588, 0.809, 0.951, 1, 0.951, 0.809, 0.588, 0.309,-0.309, -0.588, -0.809, -0.951, -1, -0.951, -0.809, -0.588, -0.309}-------------------config SMU A-------------------------smua.reset()smua.measure.autorangei = smua.AUTORANGE_ONsmua.source.func = smua.OUTPUT_DCVOLTSsmua.source.levelv = 0smua.source.limiti = 50e-3smua.measure.nplc = 0.001smua.nvbuffer1.clear()smua.nvbuffer1.appendmode = 1smua.nvbuffer1.collectsourcevalues = 1smua.nvbuffer2.clear()smua.nvbuffer2.appendmode = 1smua.nvbuffer2.collectsourcevalues = 1smua.measure.count = 1display.smua.measure.func = display.MEASURE_DCAMPS------------------measurement-----------------------smua.source.output = smua.OUTPUT_ONsmua.measure.delay = m_delayi = 1reading = 1repeatsmua.source.levelv = math.sin(i)*20delay(0.0008)i = i + 0.25if i > 360 theni = 1endif i == 90 thenreading = smua.measure.i()print(reading)enduntil reading < 0.02021