{HEAD ~ The present invention}, in contrast to the above described conventional uses of piezoelectric elements, imparts motion in a controlled manner to prevent {TAIL ~ aliasing} as will be described in greater detail below 
{ HEAD ~ The present invention } , in contrast to the above described conventional uses of piezoelectric elements , imparts motion in a controlled manner to prevent { TAIL ~ aliasing } as will be described in greater detail below
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH