Performance envelope of adiabatic logic circuits based on electrostatic NEM switches

The performance envelope, i.e. energy vs. frequency, of adiabatic logic circuits based on nanoelectromechanical (NEM) switching elements will be explored. It will be shown that the contact resistance and the mechanical commutation time of the NEM switches dictate the performance envelope of such circuits. Approximate analytical expressions will be derived based on a reduced order model (ROM) of the switch; the results obtained from this approximate model will be compared to results obtained from experimental characterization of electrostatic MEMS switches. To the authors' best knowledge this is the first publication that looks into the details of adiabatic logic circuits based on electromechanical switches.

[1]  William C. Athas,et al.  Reversible logic issues in adiabatic CMOS , 1994, Proceedings Workshop on Physics and Computation. PhysComp '94.

[2]  R. Howe,et al.  Design Considerations for Complementary Nanoelectromechanical Logic Gates , 2007, 2007 IEEE International Electron Devices Meeting.

[3]  Alexis De Vos,et al.  Optimal charging of capacitors , 1998 .

[4]  Owen Y Loh,et al.  Nanoelectromechanical contact switches. , 2012, Nature nanotechnology.

[5]  R. Holm Electric contacts; theory and application , 1967 .

[6]  K. Kendall,et al.  Surface energy and the contact of elastic solids , 1971, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[7]  Christophe Poulain,et al.  Impact of Creep and Softening Mechanisms on the Contact Resistance of RF MEMS Ohmic Switches: Study of the Current and Time Effects on Au-to-Au Microcontacts in Static Contact Conditions , 2010, 2010 Proceedings of the 56th IEEE Holm Conference on Electrical Contacts.

[8]  P. Zavracky,et al.  Study of contacts in an electrostatically actuated microswitch , 1998 .

[9]  R. S. Bradley,et al.  LXXIX. The cohesive force between solid surfaces and the surface energy of solids , 1932 .