Which software are use to design ultra low dc to dc boost converter in Thermoelectric Energy Harvesting type paper ? how to take Photograph of die circuit/Chip micrograph In this type of paper?
Usually, you remove eyepiece (ocular piece) of microscope and attach a camera instead of it to take a die photograph. Some low-cost USB microscopes recently even come without eyepiece at all - with the permanently affixed digital camera only.
Regarding simulations, you need some SPICE simulator, and "qucs" may be best in open-source category, with "Cadence Virtuoso" likely best in proprietary category.