The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A 2D sound particle velocity sensor, consisting of a cross of two connected, heated wires is presented. We developed a fabrication process by which the wires become freely suspended 350 μm above the chip surface. This largely eliminates the influence of boundary layer effects and increases the temperature gradient along the wires, both due to the large distance to the silicon substrate. As a result,...
This paper presents a non-contact measurement of irradiance on plane of array (POA) and cell temperature for PV systems. The idea is motivated from the diode model of PV, where POA irradiance and cell temperature are proportional to the photocurrent and modified ideality factor, respectively. Based on the recent progress of diode model identification, the photocurrent and modified ideality factor...
In this paper, first experiments regarding characterization of the GaN based FBAR (Film Bulk Acoustic Resonator) structures as pressure sensors are presented. The FBAR structures have been manufactured on GaN/Si using advanced micromachining technologies. The experiments have demonstrated the excellent mechanical properties of 0.5 µm thin GaN membranes able to support a pressure of at least 5 Bar.
In this paper we present a novel SOI CMOS multidirectional thermoelectric flow sensor. For the first time to the best knowledge of the authors, the sensor is shown to be able to cope with harsh environment conditions, such as 150 °C ambient temperature and humidity up to 75%.
In this paper, we introduce a new method for detecting events by automatically labeling streaming data from heterogeneous sensors. The proposed method argues that by finding spatio-temporal-theme correlations between physical and social sensory data, events can be detected precisely and explained understandably in real-time. Here, a training stage is designed as a non-stop process with labels assigned...
The results of optimization of magnetically sensitive element Field Hall sensor based on the MIS structure formed on a "silicon-on-insulator" (SOI LSF) parameters was presented. Main characteristics of device structure were defined using the results of Silvaco software simulation.
The electron spin properties are promising for future spin-driven devices. In contrast to charge, spin is not a conserved quantity, and having sufficiently long spin lifetime is critical for applications. Silicon, the major material of microelectronics, also appears to be a perfect material for spintronic applications. The peculiarities of the subband structure and details of the spin propagation...
We investigated wavelength-control-characteristics of a silicon photonic transmitter employing heater-integrated silicon micro-ring-modulator and flip-chip integrated CMOS driver. A novel wavelength control successfully demonstrated error-free operation at 25 Gbps during wide-package-temperature cycle between 20 and 60ºC for the first time.
This session presents existing design challenges in ultra-low power circuits and proposes architecture and circuit techniques to overcome those challenges. The first paper (invited) discusses the fundamental limits analog circuits face specifically due to scaled technologies and discusses some design strategies and innovative approaches to alleviate them.
In this paper, we designed a group of horizontal Hall sensors in 0.35 µm BCD (bipolar/CMOS/DMOS) technology. Compared with the existing Hall devices, the design has improvement in parts such as Hall cell parameter set and layout design under BCD technology. And then the Hall chip is taped out. The results from the precise experiment of the Hall cell verify the optimization method which can be used...
In the dark silicon era, a fundamental problem is: given a real-time computation demand represented by a set of independent applications with their own power consumption, how to determine if an on-chip multiprocessor system is able to respond to this demand and maintain its reliability by keeping every core within the safe temperature range. In this paper, we first present a novel thermal model for...
Physical unclonable functions (PUFs) are security features that are based on process variations that occur during silicon chip fabrication. As PUFs are dependent on process variations, they need to be robust against reversible and irreversible temporal variabilities. In this paper, we present experimental results showing temporal variability in 4, 5, and 7-stage ring oscillator PUFs (ROPUFs). The...
This paper reports a packaged MEMS capacitive pressure sensor based 3C-SiC using bulk-micromachining technology that operates on the pressure up to 5.0 MPa and temperature up to 500 ºC. The diaphragm employs a single-crystal 3C-SiC thin film that is back-etched from its Si substrate. A photosensitive ProTEK PSB is used as a protection mask layer to reduce the process steps. We compare our results...
Photovoltaic Reliability Group is being initiated in USA and India to assist owners of small PV systems. FSEC and Pune University have experience in monitoring performance of PV systems and household energy devices. Small PV system owners are being encouraged to participate. The scope is expected to increase because the Indian Government has decided to boost the national solar target to 100 GW by...
In this paper, the performances of a lateral thin-film PIN photodiode based on silicon-on-insulator technology are reported for applications from blue to red wavelengths. The platform consists of a micro-hotplate with a suspended heater and a photodiode. Responsivities of 0.01 to 0.05 A/W were obtained for 450–900 nm light range in reverse bias operation. Suspended photodiodes give up to 5x responsivity...
In this paper, we present a method for detecting events, especially healthcare-related events, by abstracting trends of data streaming from heterogeneous sensors. The main idea behind the method is to detect real-time events and explain them understandably by finding spatio-temporal-theme correlations between physical and social sensory data. In the method, a training stage is designed as a non-stop...
The pressure sensor is a key device in many mechatronic systems for automotive and industrial applications. We represent the piezoresitive pressure sensor based on the single crystal silicon strain gauges, which are glass-fused to the stainless steel diaphragm at high temperature. The silicon bulkmicromachined strain gauges have the through holes and the closed structure, unlike the current competitive...
The changes in short-circuit current of photovoltaic (PV) cells and modules with temperature are routinely modeled through a single parameter, the temperature coefficient (TC). This parameter is vital for the translation equations used in system sizing, yet in practice is very difficult to measure. In this paper, we discuss these inherent problems and demonstrate how they can introduce unacceptably...
The PERC cells shows significant efficiency improvement (efficiency gain ≧ 1%), but they suffer from severe light-induced degradation (LID) due to a higher sensibility to bulk carrier lifetime degradation. In order to suppress severe LID behavior on p-type Cz PERC cells, the phenomena of light-induced regeneration (LIR) over time at elevated temperatures during illumination have been investigated...
The present article reports on experimental measurements aimed at assessing general theoretical expressions of temperature coefficients in the case of crystalline silicon solar cells. The relevance of a recently proposed relation between the temperature dependence of open circuit voltage and the external radiative efficiency of photovoltaic devices is demonstrated. Unusual temperature sensitivities...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.