Laboratory facilities in the Department of Bioengineering for Dr. Smith included 2000 square of laboratory space, a 64 channel amplifier system built by Advanced Surgical Systems, Tucson, AZ, a Luxtron® Fiber Optic Thermometry and multiple focused and unfocused ultrasonic arrays.  Electrical equipment include an Agilent E5100A Network Analyzer, Agilent 54622A 100 MHz oscilloscope (GPIB), Wavetek 390 Arbitrary Waveform Generator, ENI A500 power amplifier,  Agilent E3630A triple power supply, Tektronix TDD 240 with GPIB interface and FFT module and assorted equipment for array construction and testing.  For array exposimetry, this facility has a computer controlled Velmex Positioning System (Velmex®, Inc., East Bloomfield, NY) for automated hydrophone (Precision Acoustics Ltd. Dorset, England) measurements in a water tank (45 x 21 x 20 cm3).  An in-house constructed degasser removes dissolved oxygen content of water to 1-2 ppm.

The 64 channel array amplifier system (Advanced Surgical System, Model UDS 6460, www.advanced-surgical.com) is a multi-channel high power, ultrasound phased-array transducer driver. Capable of delivering 60W per channel continuously with individual power control, the UDS 6460 is capable of driving a wide variety of ultrasonic devices. A precision power leveling circuit precisely delivers the desired forward power into the load, regardless of the load impedance (within the operating range of the amplifier). The precision power measurement capability allows the continual monitoring of the forward and reflected RF power. Microcontrollers on each amplifier card continually monitor the operation of each amplifier (each microcontroller controls four amplifiers). Limits on forward and reflected power for each channel can be preprogrammed to either discontinue power or to alert the host computer, providing nearly instantaneous fault detection. A 250 element stack allows for the preprogramming of a series of independent phase settings and RF powers. Communication between the amplifier and host system is performed via an RS-232 serial port interface.  The amplifier system is located in the lab of Dr. Smith. 
 

Core Facilities

  • Transducer Modeling - PZFlex time domain finite element analysis software, ANSYS frequency domain finite element analysis software, PSPICE circuit analysis software, MATLAB, AbSOFT FORTAN software.

  • Transducer Fabrication - K&S 782 dicing saw, Parylene coating system, DC magnetron sputtering system, lapping and grinding machines, polymer mixing and casting, soldering and wire bonding equipment, assembly stations, and machine shop capabilities. Located in the within the Department of Bioengineering under the direction and supervision of Dr. Smith; the facilities are fully available for projects.

  • Transducer Testing-20 kHz - 20 MHz hydrophone systems, multichannel 250MHz digitizers, 100 MHz and 500 MHz impedance analyzers, high frequency oscilloscopes and pulser/receivers, spectrum analyzers, computerized test stations, and a high frequency materials characterization.

  • High Precision Transducer Exposimetry Systems - The Department of Bioengineering has two exposimetry systems, one for high frequency transducers located in the laboratory for Dr. Smith for 20 kHz - 5 MHz available for projects.

Some of the other equipment we have around....

              

     Amplifier system                    Amps & Scopes                            Degasser                               K&S 982 dicing saw

               

    K&S 983 dicing saw                          Hood                            K&S 782 dicing saw

              

Parylene coating system                   Drying                       DC magnetron sputtering system                  Exposimetry

 

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