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Articles 241 - 250 of 250
Full-Text Articles in Engineering
Intelligent Irrigation Zone Splitter, David Boeck
Intelligent Irrigation Zone Splitter, David Boeck
Electrical Engineering
The intelligent irrigation zone splitter allows easy expansion of an existing irrigation controller. To expand on an existing controller a new wire is needed to run between the controller and the valve. This path may be buried beneath driveways, patios, and sidewalks. The intelligent irrigation zone splitter uses an already existing wire path to control two valves and create a new watering zone. This controller uses timing and memory to split the total watering time of the zone.
100nm Thick Aluminum Nitride Based Piezoelectric Nano Switches Exhibiting 1mv Threshold Voltage Via Body-Biasing, Nipun Sinha, Zhijun Guo, Valeriy Felmetsger, Gianluca Piazza
100nm Thick Aluminum Nitride Based Piezoelectric Nano Switches Exhibiting 1mv Threshold Voltage Via Body-Biasing, Nipun Sinha, Zhijun Guo, Valeriy Felmetsger, Gianluca Piazza
Nipun Sinha
This paper reports on the first demonstration of aluminum nitride (AlN) piezoelectric logic switches that were fabricated with ultra-thin (100nm) AlN films and exhibit a 1 mV threshold voltage via the body-biasing scheme. The application of a relatively low (< 6 V) fixed potential to the body terminal of a 4-terminal switch has resulted in a repeatable threshold voltage of 1 mV. The nano-switch has been cycled to > 109 cycles and, although the contact resistance was found to be high (~ 1 MΩ), the nano-films have functioned throughout to show high piezoelectric nano-film reliability.
Super-High-Frequency Two-Port Aln Contour-Mode Resonators For Rf Applications, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Super-High-Frequency Two-Port Aln Contour-Mode Resonators For Rf Applications, Matteo Rinaldi, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Matteo Rinaldi
This paper reports on the design and experimental verification of a new class of thin-film (250 nm) super-high-frequency laterally-vibrating piezoelectric microelectromechanical (MEMS) resonators suitable for the fabrication of narrow-band MEMS filters operating at frequencies above 3 GHz. The device dimensions have been opportunely scaled both in the lateral and vertical dimensions to excite a contour-extensional mode of vibration in nanofeatures of an ultra-thin (250 nm) AlN film. In this first demonstration, 2-port resonators vibrating up to 4.5 GHz have been fabricated on the same die and attained electromechanical coupling, kt2, in excess of 1.5%. These devices are employed to synthesize …
Demonstration Of Low Voltage And Functionally Complete Logic Operations Using Body-Biased Complementary And Ultra-Thin Aln Piezoelectric Mechanical Switches, Nipun Sinha, Timothy S. Jones, Zhijun Guo, Gianluca Piazza
Demonstration Of Low Voltage And Functionally Complete Logic Operations Using Body-Biased Complementary And Ultra-Thin Aln Piezoelectric Mechanical Switches, Nipun Sinha, Timothy S. Jones, Zhijun Guo, Gianluca Piazza
Nipun Sinha
This paper reports, for the first time, on the demonstration of low voltage and functionally complete logic elements (NAND and NOR) implemented by using body-biased complementary and ultra-thin (250 nm thick) Aluminum Nitride (AlN) based piezoelectric mechanical switches. This work presents, firstly, the importance of scaling AlN films for the demonstration of ultra-thin AlN switches and, secondly, the implementation of a new actuation scheme based on body biasing to lower the switch threshold voltage. Four of these ultra-thin switches were connected together to synthesize functionally complete MEMS logic gates (NAND and NOR) with a ± 2V swing and a body-bias …
The Effect Of The Digit Slicing Architecture On The Fft Butterfly, Yazan Samir, Rozita Teymourzadeh
The Effect Of The Digit Slicing Architecture On The Fft Butterfly, Yazan Samir, Rozita Teymourzadeh
Dr. Rozita Teymourzadeh, CEng.
Vlsi Implementation Of Novel Class Of High Speed Pipelined Digital Signal Processing Filter For Wireless Receivers, Rozita Teymourzadeh, Yazan Samir, Shabuil Islam, Masuri Othman, Mok Vh
Vlsi Implementation Of Novel Class Of High Speed Pipelined Digital Signal Processing Filter For Wireless Receivers, Rozita Teymourzadeh, Yazan Samir, Shabuil Islam, Masuri Othman, Mok Vh
Dr. Rozita Teymourzadeh, CEng.
Design Of Automatic Soil Humidity Control Using Maximum Power Point Tracking Controller, Hoe Ck, Vaithlingam A.C., Rozita Teymourzadeh, Rajkumar R
Design Of Automatic Soil Humidity Control Using Maximum Power Point Tracking Controller, Hoe Ck, Vaithlingam A.C., Rozita Teymourzadeh, Rajkumar R
Dr. Rozita Teymourzadeh, CEng.
On-Chip Implementation Of Pipeline Digit-Slicing Multiplier-Less Butterfly For Fast Fourier Transform Architecture, Yazan Samir, Rozita Teymourzadeh, Masuri Othman, Shabiul Islam, Mok Vh
On-Chip Implementation Of Pipeline Digit-Slicing Multiplier-Less Butterfly For Fast Fourier Transform Architecture, Yazan Samir, Rozita Teymourzadeh, Masuri Othman, Shabiul Islam, Mok Vh
Dr. Rozita Teymourzadeh, CEng.
On-Chip Implementation Of High Resolution High Speed Floating Point Adder/Subtractor With Reducing Mean Latency For Ofdm, Rozita Teymourzadeh, Yazan Samir, Nooshin Mahdavi, Masuri Othman
On-Chip Implementation Of High Resolution High Speed Floating Point Adder/Subtractor With Reducing Mean Latency For Ofdm, Rozita Teymourzadeh, Yazan Samir, Nooshin Mahdavi, Masuri Othman
Dr. Rozita Teymourzadeh, CEng.
Ss-Dna Functionalized Ultra-Thin-Film Aln Contour-Mode Resonators With Self-Sustained Oscillator For Volatile Organic Chemical Detection, Matteo Rinaldi, Brandon Duick, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Ss-Dna Functionalized Ultra-Thin-Film Aln Contour-Mode Resonators With Self-Sustained Oscillator For Volatile Organic Chemical Detection, Matteo Rinaldi, Brandon Duick, Chiara Zuniga, Chengjie Zuo, Gianluca Piazza
Matteo Rinaldi
This paper reports on the design and experimental verification of a new class of nanoscale gravimetric sensors based on ultra-thin-film AlN Contour-Mode Resonant Sensor (CMR-S) functionalized with ss-DNA and connected to a chip-based self-sustaining oscillator loop (fabricated in the ON Semiconductor 0.5 μm CMOS process) for direct frequency read-out. The 220 MHz oscillator based on the ultra-thin AlN CMR-S exhibits an Allan Variance of ∼20 Hz for 100 ms gate time. The sensor affinity for the adsorption of volatile organic chemicals such as 2,6 dinitroluene (DNT, a simulant for explosive vapors) is enhanced by functionalizing the top gold electrode of …