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2. Capacitive micromachined ultrasonic transducer - Wikipedia

   en.wikipedia.org/wiki/Capacitive_micromachined...

   Capacitive micromachined ultrasonic transducers (CMUT) are a relatively new concept in the field of ultrasonic transducers. Most of the commercial ultrasonic transducers today are based on piezoelectricity. In CMUTs, the energy transduction is due to change in capacitance. CMUTs are constructed on silicon using micromachining techniques.

3. Ultrasonic transducer - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_transducer

   The transducers typically use piezoelectric transducers [3] or capacitive transducers to generate or receive ultrasound. [4] Piezoelectric crystals are able to change their sizes and shapes in response to voltage being applied. [3] On the other hand, capacitive transducers use electrostatic fields between a conductive diaphragm and a backing plate.

4. Orthomode transducer - Wikipedia

   en.wikipedia.org/wiki/Orthomode_transducer

   An orthomode transducer (OMT) is a waveguide component that is commonly referred to as a polarisation duplexer. Orthomode is a contraction of orthogonal mode . Orthomode transducers serve either to combine or to separate two orthogonally polarized microwave signal paths. [ 1 ]

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6. 5 Items From the 1970s That Are Worth a Lot of Money - AOL

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   Get some last-minute shopping done at the Kate Spade Outlet sale — up to 70% off plus an extra 25% off select gifts. AOL. The 20 best gifts to give someone you don't know very well. AOL.

7. Kroger's $25-billion deal for grocery rival Albertsons ... - AOL

   www.aol.com/news/us-court-blocks-krogers-25...

   By Jody Godoy (Reuters) -A U.S. judge blocked the pending $25-billion merger of U.S. grocery chains Kroger and Albertsons on Tuesday, in a win for the Federal Trade Commission that Kroger has said ...