The point here is that when you are shopping for a camera, concentrate on the type and physical dimensions of the sensor.
Simulations were carried out by varying dimensions of the sensor to optimize the resonant frequency, stresses and voltage generated as a function of applied pressure.
Such small physical dimensions of the sensor eliminate the need for spatial averaging corrections so that true pressure time (p t) waveforms can be faithfully recorded.
All three dimensions of the sensor are below 1 μm.
The design and dimensions of the sensor are given in Figure 2.
In the case of our testbed, the required minimum diameter is 7.5 cm due to the dimensions of the sensor node.
The ultrathin dimensions of the sensor array facilitate not only conformal contacts with the target surface but also a fast response time by virtue of its extremely low thermal mass.
The small dimensions of the sensor (as low as 250 µm diameter) allows it to be easily guided within existing brachytherapy equipment; for example, within the seed implantation needle for direct tumour dose analysis, in the urinary catheter to monitor urethral dose, or within the biopsy needle holder of the transrectal ultrasound probe to monitor rectal wall dose.
The small dimensions of the sensor allow them to be guided within existing brachytherapy equipment; for example, within the seed implantation needle (see Fig. 5b), in the urinary catheter to monitor urethral dose, or along the transperineal ultrasound probe to monitor rectal wall dose.
For instance, if the nodes Sender A, Receiver 1, and Receiver 2 are buried, in this order, in the same hole, the Receiver 1 will be an obstacle for the propagation of waves from the Sender to the Receiver 2. Based on the dimensions of the sensor nodes and the communication constraints empirically verified in [4], the physical layout for basic WUSN testbeds is illustrated in Figure 3.
