Utilizing FEMM software Theory: The micrometer capacitor is designed using conductive metals such as gold or platinum th

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answerhappygod
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Utilizing FEMM software Theory: The micrometer capacitor is designed using conductive metals such as gold or platinum th

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Utilizing FEMM software
Theory:
The micrometer capacitor is designed using conductive metalssuch as gold or platinum that are deposited on a rigid or flexibleinsulating surface using integrated circuit manufacturingtechnologies. The shape of the electrodes can vary, being a verycommon one the Comb type (comb in English) as is the case of theimage shown. The thickness of the metal layer can vary from 1,000to 10,000 nanometers or Amstrongs. The width and length of theelectrode is designed based on the desired capacitor properties.Sometimes to improve the quality of the electrodes, instead ofleaving them exposed to the air, the metal is covered with a layerof polymer with permittivities higher than that of a vacuum. Whenapplying electrical potential between the anode and cathode, thecharge capacity that these capacitors can store can be appreciated,which can be large considering their tiny size.
Assignment:
Design a micrometer comb capacitor that has exactly 0.2pF. Showthe complete geometry chosen for your capacitor (thickness, length,width, number of comb fingers) and the permittivity value of theselected polymer which you can take from the FEMM library or fromthe list in the annex.
Simulate your capacitor. Apply a voltage of 10 volts between theanode and cathode and display the charge stored in the capacitor aswell as capacitance calculations using both the capacitance versusgeometry formula and the voltage versus charge formula. Theseequations have a weight of 30% of the assignment.Calculate the electric field between the fingers of the comb. Sothat you know which E-field equation to use, first make a graph ofthe E-field across the middle of the comb (crossing all fingersperpendicular). Show the contour, the graph of E, and finally theequation and value of |E|. Also show the field vectors in FEMM.Comment on the behavior of E. The equation for the calculation of|E| It has a weight of 20% of the allocation.
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