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← ScienceWhich mechanism limits the speed electronic signals propagate across nanoscale semiconductor transistor?
A)Quantum tunneling through thin gate oxide✓
B)Electromagnetic interference between adjacent transistors
C)Thermal resistance of the silicon substrate
D)Capacitive loading from interconnect wiring
💡 Explanation
When transistors are miniaturized, the gate oxide becomes extremely thin, enabling significant quantum tunneling, limiting gate control and signal integrity, leading to decreased switching speeds. Therefore quantum tunneling causes speed limits, rather than interference heating or capacitance issues impacting signal propagation.
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