Acoustic surface wave devices
Fabrication of high temperature surface acoustic wave devices for sensor applications
... In Fig. 5 the resonant frequencies are plotted against time for W1 and W2. It was found that the calculated relative drifts of the frequencies were 10 ppm/h for W1 and 18 ppm/h for W2. One of the reasons for the drift ...
5
Development of flexible ZnO thin film surface acoustic wave strain sensors on ultrathin glass substrates
... the substrate material. Depending on application, many kinds of flexible substrates have been explored. Among them, polymers such as polyethylene terephthalate (PET), polyimide (PI) and polymethyl methacrylate (PMMA) etc ...
12
Wireless surface acoustic wave sensors for displacement and crack monitoring in concrete structures
... Surface acoustic wave (SAW) devices are a class of wireless sensor which require no batteries, as they operate on wireless power. By utilising radio-frequency identification (RFID) technology, ...
10
Design and manufacture of surface acoustic wave sensors for real time weigh in motion
... The design of an optimised sensor requires accurate experimental data on a number of process parameters and configurations, which for this project requires the testing of several prototype designs. The large prototyping ...
5
Modelling of Surface Acoustic Wave Strain Sensors using Coupling of Modes Analysis
... URFACE Acoustic Wave (SAW) devices have been used for many years in RF communications as filters and delay ...the devices is a key advantage not only in improving current measurement systems ...
8
Flexible surface acoustic wave broadband strain sensors based on ultra-thin flexible glass substrate
... photolithography and lift-off process. Al was deposited by the magnetron sputtering as well. The detailed fabrication conditions can be found in our previous work[4, 5]. Fig. 1(a) is a photo of the fabricated SAW ...
6
Engineering silver nanostructures for surface acoustic wave humidity sensors sensitivity enhancement
... Surface acoustic wave (SAW) resonators are a type of sensors with high sensitivity to changes occurred on/in the surface, including temperature, humidity, mass loading, electrical field etc 22 ...
12
Distilling determination of water content in hydraulic oil with a ZnO/glass surface acoustic wave device
... ZnO surface of the SAW device, and monitored by tracking the frequency shift based on the principle of SAW humidity ...SAW devices were measured by a network analyzer (Agilent E5061B) to analyze the ...
10
High performance dual-wave mode flexible surface acoustic wave resonators for UV light sensing
... SAW devices two wave modes, they can not only sense the UV light intensity using the two wave modes simultaneously, but also can use three variables (resonant frequency, insertion loss and phases ...
9
Thermal annealing effect on ZnO surface acoustic wave-based ultraviolet light sensors on glass substrates
... optimized previously 13 and were used directly in this work. The deposition conditions were: 1 Pa deposition pressure, 75 V bias voltage and 200 W deposition power. The films were deposited without intentional heating, ...
7
Design, manufacture, modelling and testing of surface acoustic wave strain sensors
... ◦ devices are implemented in the same layout, the rotated devices are subject to the same design grid problems as encountered with the ...sub-optimal devices), and alignment marks corresponding to 0 ...
263
Modification of Surface Acoustic Wave (SAW) Sensor Using Zinc Oxide Nanowires
... the devices, which proves our method by coated positive photo resist as passivation layer potentially providing a convenient approach for integration of high-density nanostructures into pre-existing CMOS ...
10
Selective excitation of localized spin-wave modes by optically pumped surface acoustic waves
... future devices in which surface acoustic waves can be used to coherently excite spin waves in magnonic logic devices ...spin wave amplifica- tion / boosting capabilities for long ...
9
Flexible surface acoustic wave strain sensor based on single crystalline LiNbO3 thin film
... thus strain as well as temperature can be measured simultaneously, i.e. strain value measured with calibrated temperatures. Although the above calculated values of TCFs are higher than the thermal expansion coefficient ...
11
Observations of Surface Acoustic Wave Strain and Resistive Strain Measurements on Broaching Tools for Process Monitoring
... In the past there have been limitations with integrating SAW sensors into applications, primarily due to a lack of commercially available interrogation systems. However commercial off- ff the-shelf solutions for ...
6
Physical properties of metal doped zinc oxide films for surface acoustic wave application
... the surface roughness increases, electrical resistivity decreases with the addition of silver in the SZO films as shown in Figure ...piezoelectric devices. Figure 4b shows that the surface RMS ...
5
High frequency surface acoustic wave resonator based sensor for particulate matter detection
... allow acoustic coupling of the entire particle volume, the particle size must be less than the acoustic penetration depth (~3 µm) of the designed ...SAWR devices and the mass sensitivity was measured ...
21
Non-invasive charge detection in surface-acoustic-wave-defined dynamic quantum dots
... SAW devices are developed, as non- invasive charge detection will be necessary both to test each component of a multiple-stage SAW circuit and to probe fundamental quantum effects in SAW devices (for ...
5
Effective pulmonary delivery of an aerosolized plasmid DNA vaccine via surface acoustic wave nebulization
... This study reports the first instance of successful pDNA delivery via inhalation using an unprotected pDNA vac- cine in a clinically relevant large animal model. Due to similarities with humans in lung structure and ...
12
Flexible surface acoustic wave respiration sensor for monitoring obstructive sleep apnea syndrome
... use surface acoustic wave (SAW) sensor as flexible respiration monitoring device for detecting ...SAW devices are very sensitive to humidity, temperature and pressure[12–14], they can be used ...
14