Low-noise charge sensitive readout for pyroelectric sensor arrays using PVDF thin film

Ishiwara

Applied Physics Letters

2007

190

123

Articles you may be interested inHigh-temperature ferroelectric behaviors of poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films with electroactive interlayers J. Appl. Phys. 111, 064506 (2012); 10.1063/1.3699051 Polarization behavior of poly(vinylidene fluoride-trifluoroethylene) copolymer ferroelectric thin film capacitors for nonvolatile memory application in flexible electronics J. Appl. Phys. 108, 094102 (2010); 10.1063/1.3500428 Interacting and noninteracting dipole systems in ferroelectric poly(vinylidene fluoride-trifluoroethylene) copolymer J. Appl. Phys. 108, 084109 (2010); 10.1063/1.3499614 Domain stabilization effect of interlayer on ferroelectric poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin film Electrical investigations on metal/ferroelectric/insulator/semiconductor structures using poly[vinylidene fluoride trifluoroethylene] as ferroelectric layer for organic nonvolatile memory applications

Section: Low-voltage Operation Of Ferroelectric Poly"vinylidene Fluormentioning

confidence: 99%

Low-voltage operation of ferroelectric poly(vinylidene fluoride-trifluoroethylene) copolymer capacitors and metal-ferroelectric-insulator-semiconductor diodes

Ishiwara

Applied Physics Letters

2007

190

123

“…1, where W [W/m 2 ] is the heat flux [13]. Its response is characterized by the thermal time constant τ th , which is the time needed by the detector to electrically respond when a thermal input flux occurs.…”

Section: The Pyroelectric Transducermentioning

confidence: 99%

Pyroelectric Sensor for Temperature Monitoring of Biological Fluids in Microchannel Devices

2014

In a lab-on-a-chip application, the measurement of local temperature variation often involves the detection of very low-level signals in a noisy microscale environment. A polymer pyroelectric transducer represents an efficient solution in terms of speed, sensitivity, and scale of integration, especially when prompt and accurate temperature monitoring is desired. This paper presents a ferroelectric polymer sensor to be used for the measurement of temperature variations in a microfluidic system. The pyroelectric sensor is based on a thin polyvinylidene fluoride sheet, which also provides a seal for the microchannels. The analytical model of the pyroelectric response of the sensor, coupled with the microchannel device, is in a good agreement with experimental data. Experiments confirm that the operating temperature range is suitable for most applications in which fast temperature monitoring is desired in order to avoid degradation of the biological samples.

“…By extracting the parameters of sensor and transistors, we have C s = 130 pF, tanδ = 0.02, C ox = 0.115 μF/cm 2 , and K n = 1.2×10 -23 V 2 •F [24]. Substituting these to (15) yields that the total noise is dominated by the circuit. Fig.6 (a) and (b) show the experimental results of the frequency and noise response of the integrated sensor system, which match well with the simulated results analyzed above.…”

Section: B Integrated Me Sensor With Voltage Mode Readoutmentioning

confidence: 99%

“…The simple structures of these ME effect based sensors facilitate their direct integration with advanced microelectronics, which can significantly reduce the spurious noises due to electric wiring between the sensors and signal conditioning circuitry [15]. In this paper, a system in package (SIP) approach is employed to directly integrate the ME sensor with a charge sensitive readout circuit as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

Direct integration of magnetoelectric sensors with microelectronics

Zhao

Mokhariwale

et al. 2010

2010 IEEE Sensors

The large magnetoelectric (ME) coupling in the ME laminates makes them attractive for ultrasensitive room temperature magnetic sensors. Here we investigate the field sensitivity and signal-to-noise ratio (SNR) of ME laminates, consisting of magnetostrictive and piezoelectric layers (Metglas and piezopolymer PVDF were used as the model system), which are directly integrated with two different modes of low noise readout circuits ─ charge mode and voltage mode. For the sensor system with charge mode readout circuit, both the theoretical analysis and experimental results show that increasing the number of piezolayer layers can improve the SNR, especially at low frequencies. We also introduce a figure of merit to measure the overall influence of the piezolayer properties on the SNR and show that the newly developed piezoelectric single crystals of PMN-PT and PZN-PT have the promise to achieve a very high SNR and consequently ultra-high sensitivity room temperature magnetic sensors. The results show that the ME coefficients used in early ME composites development works may not be relevant to the SNR. The results also show that enhancing the piezomagnetic coefficient, for example, by employing the flux concentration effect, can lead to enhanced SNR. For the sensor system in-package with voltage mode readout circuits, both theories and experiments show that the system in package exhibits frequency independent field sensitivity at the whole frequency range of interests. The package ME sensors investigated here show the potential of chip scale ME magnetic sensors with high SNR and sensitivity.