Academic literature on the topic 'Uncooled infrared detectors'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Uncooled infrared detectors.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Uncooled infrared detectors"

1

Deng, Fang Yi, Xin She Wu, and Yuan Fang Li. "In Modulating Ferroelectric Uncooled Infrared Focal Plane Detector." Applied Mechanics and Materials 455 (November 2013): 474–79. http://dx.doi.org/10.4028/www.scientific.net/amm.455.474.

Full text
Abstract:
Aiming at detecting rate and frame rate problems restricting the development of ferroelectric detector technology, puts forward a new design method of ferroelectric ferroelectric detectors -- detector modulation. Improvement principle and structure of the original ferroelectric detectors, and summarizes the technical features of this device.
APA, Harvard, Vancouver, ISO, and other styles
2

Piotrowski, J., and A. Rogalski. "Uncooled long wavelength infrared photon detectors." Infrared Physics & Technology 46, no. 1-2 (December 2004): 115–31. http://dx.doi.org/10.1016/j.infrared.2004.03.016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lijing Yu, 余黎静, 唐利斌 Libin Tang, 杨文运 Wenyun Yang, and 郝群 Qun Hao. "Research progress of uncooled infrared detectors(Invited)." Infrared and Laser Engineering 50, no. 1 (2021): 20211013. http://dx.doi.org/10.3788/irla.9_2021-1013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lijing Yu, 余黎静, 唐利斌 Libin Tang, 杨文运 Wenyun Yang, and 郝群 Qun Hao. "Research progress of uncooled infrared detectors(Invited)." Infrared and Laser Engineering 50, no. 1 (2021): 20211013. http://dx.doi.org/10.3788/irla20211013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Li, Ze, Yu Zhao, Weili Li, Yazhou Peng, Wenyue Zhao, Zhao Wang, Lei Shi, and Weidong Fei. "Graphene/Ba0.7Sr0.3TiO3 heterostructure for uncooled infrared detectors." Materials Letters 305 (December 2021): 130686. http://dx.doi.org/10.1016/j.matlet.2021.130686.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Fang, Hua Jun, Xing Ming Liu, and Li Tian Liu. "A Uncooled α-Si Infrared Detector Using Polyimide as Thermal Isolation Layer." Advanced Materials Research 60-61 (January 2009): 371–74. http://dx.doi.org/10.4028/www.scientific.net/amr.60-61.371.

Full text
Abstract:
a new structure of the uncooled amorphous silicon (α-Si) infrared detector has been fabricated and characterized. The structure with thermal isolation and infrared absorption based on polyimide (PI) and bottom metal reflective layer is put forward. The fabrication process of the IR detectors is described. The temperature coefficient of resistance (TCR) of α-Si resistance has been investigated. The measurements show that the TCR is up to -2.8%. The detectivity of 1.7×108 cmHz1/2W-1 is achieved with chopping frequency of 30Hz at a bias voltage of 5V. Measurement results indicate that the polyimide layer exhibits excellent thermal isolating characteristics and the unique sandwich IR absorption structure is beneficial to the enhancement of detectivity. Compared with other techniques, the IR detectors using PI as thermal isolation layer are not only with simpler process, lower cost and higher yield, but also suitable for the application of large-scale uncooled infrared focal plane arrays (IRFPA).
APA, Harvard, Vancouver, ISO, and other styles
7

Eminoglu, Selim, Deniz Sabuncuoglu Tezcan, M. Yusuf Tanrikulu, and Tayfun Akin. "Low-cost uncooled infrared detectors in CMOS process." Sensors and Actuators A: Physical 109, no. 1-2 (December 2003): 102–13. http://dx.doi.org/10.1016/j.sna.2003.08.013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jayaweera, P. V. V., S. G. Matsik, A. G. U. Perera, H. C. Liu, M. Buchanan, and Z. R. Wasilewski. "Uncooled infrared detectors for 3–5μm and beyond." Applied Physics Letters 93, no. 2 (July 14, 2008): 021105. http://dx.doi.org/10.1063/1.2959060.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Haggag, Walid, and Ezz Farouk. "OPTIMIZATION AND PERFORMANCE LIMITS OF UNCOOLED INFRARED DETECTORS." International Conference on Aerospace Sciences and Aviation Technology 12, ASAT CONFERENCE (May 1, 2007): 1–23. http://dx.doi.org/10.21608/asat.2007.24014.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Katsumata, Takashi, Ryosuke Nishimura, Keisuke Yamaoka, Edson Gomes Camargo, Tomohiro Morishita, Koichiro Ueno, Seiichi Tokuo, Hiromasa Goto, and Naohiro Kuze. "Uncooled InGaSb photovoltaic infrared detectors for gas sensing." Journal of Crystal Growth 378 (September 2013): 611–13. http://dx.doi.org/10.1016/j.jcrysgro.2012.12.088.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Uncooled infrared detectors"

1

Piyankarage, Viraj Vishwakantha Jayaweera. "Uncooled Infrared Photon Detection Concepts and Devices." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/phy_astr_diss/30.

Full text
Abstract:
This work describes infrared (IR) photon detector techniques based on novel semiconductor device concepts and detector designs. The aim of the investigation was to examine alternative IR detection concepts with a view to resolve some of the issues of existing IR detectors such as operating temperature and response range. Systems were fabricated to demonstrate the following IR detection concepts and determine detector parameters: (i) Near-infrared (NIR) detection based on dye-sensitization of nanostructured semiconductors, (ii) Displacement currents in semiconductor quantum dots (QDs) embedded dielectric media, (iii) Split-off band transitions in GaAs/AlGaAs heterojunction interfacial workfunction internal photoemission (HEIWIP) detectors. A far-infrared detector based on GaSb homojunction interfacial workfunction internal photoemission (HIWIP) structure is also discussed. Device concepts, detector structures, and experimental results discussed in the text are summarized below. Dye-sensitized (DS) detector structures consisting of n-TiO2/Dye/p-CuSCN heterostructures with several IR-sensitive dyes showed response peaks at 808, 812, 858, 866, 876, and 1056 nm at room temperature. The peak specific detectivity (D*) was 9.5E+10 Jones at 812 nm at room temperature. Radiation induced carrier generation alters the electronic polarizability of QDs provided the quenching of excitation is suppressed by separation of the QDs. A device constructed to illustrate this concept by embedding PbS QDs in paraffin wax showed a peak D* of 3E+8 Jones at ~540 nm at ambient temperature. A typical HEIWIP/HIWIP detector structures consist of single (or multiple) period(s) of doped emitter(s) and undoped barrier(s) which are sandwiched between two highly doped contact layers. A p-GaAs/AlGaAs HEIWIP structure showed enhanced absorption in NIR range due to heavy/light-hole band to split-off band transitions and leading to the development of GaAs based uncooled sensors for IR detection in the 2 5 μm wavelength range with a peak D* of 6.8E+5 Jones. A HIWIP detector based on p-GaSb/GaSb showed a free carrier response threshold wavelength at 97 µm (~3 THz)with a peak D* of 5.7E+11 Jones at 36 μm and 4.9 K. In this detector, a bolometric type response in the 97 - 200 µm (3-1.5 THz) range was also observed.
APA, Harvard, Vancouver, ISO, and other styles
2

Purkl, Fabian [Verfasser], and Gerald A. [Akademischer Betreuer] Urban. "Uncooled infrared detectors based on nanometer-thin metal films." Freiburg : Universität, 2019. http://d-nb.info/1204003351/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Eminoglu, Selim. "Uncooled Infrared Focal Plane Arrays With Integrated Readout Circuitry Using Mems And Standard Cmos Technologies." Phd thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/698597/index.pdf.

Full text
Abstract:
This thesis reports the development of low-cost uncooled microbolometer focal plane arrays (FPAs) together with their integrated readout circuitry for infrared night vision applications. Infrared microbolometer detectors are based on suspended and thermally isolated p+-active/n-well diodes fabricated using a standard 0.35 µ
m CMOS process followed by a simple post-CMOS bulk-micromachining process. The post-CMOS process does not require any critical lithography or complicated deposition steps
and therefore, the FPA cost is reduced considerably. The integrated readout circuitry is developed specially for the p+-active/n-well diode microbolometers that provides lower input referred noise voltage than the previously developed microbolometer readout circuits suitable for the diode type microbolometers. Two FPAs with 64 ×
64 and 128 ×
128 array formats have been implemented together with their low-noise integrated readout circuitry. These FPAs are first of their kinds where such large format uncooled infrared FPAs are designed and fabricated using a standard CMOS process. The fabricated detectors have a temperature coefficient of -2 mV/K, a thermal conductance value of 1.55 ×
10-7 W/K, and a thermal time constant value of 36 ms, providing a measured DC responsivity (&
#8476
) of 4970 V/W under continuous bias. The measured detector noise is 0.69 µ
V in 8 kHz bandwidth, resulting a measured detectivity (D*) of 9.7 ×
108 cm&
#8730
Hz/W. The 64 ×
64 FPA chip has 4096 pixels scanned by an integrated 16-channel parallel readout circuit composed of low-noise differential transconductance amplifiers, switched capacitor integrators, and sample-and-hold circuits. It measures 4.1 mm ×
5.4 mm, dissipates 25 mW power, and provides an estimated NETD value of 0.8 K at 30 frames/sec (fps) for an f/1 optics. The measured uncorrected voltage non-uniformity for the 64 ×
64 array after the CMOS fabrication is 0.8 %, which is reduced further down to 0.2 % for the 128 ×
128 array using an improved FPA structure that can compensate for the fixed pattern noise due to the FPA routing. The 128 ×
128 FPA chip has 16384 microbolometer pixels scanned by a 32-channel parallel readout circuitry. The 128 ×
128 FPA measures 6.6 mm ×
7.9 mm, includes a PTAT temperature sensor and a vacuum sensor, dissipates 25 mW power, and provides an estimated NETD value of 1 K at 30 fps for an f/1 optics. These NETD values can be decreased below 350 mK with further optimization of the readout circuit and post-CMOS etching steps. Hence, the proposed method is very cost-effective to fabricate large format focal plane arrays for very low-cost infrared imaging applications.
APA, Harvard, Vancouver, ISO, and other styles
4

Kucuk, Seniz Esra. "Development Of High Fill Factor And High Performance Uncooled Infrared Detector Pixels." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613738/index.pdf.

Full text
Abstract:
This thesis presents the design, fabrication and characterization of high performance and high fill factor surface micromachined uncooled infrared resistive microbolometer detectors which can be used in large format focal plane arrays (FPAs). The detector pixels, which have a pixel pitch of 25 &mu
m, are designed and fabricated as two-level structures using the enhanced sandwich type resistor while the active material is selected as Yttrium Barium Copper Oxide (YBCO). First level of the pixel structure is allocated for the formation of the support arms in order to obtain longer support arms hence lower thermal conductance values to get the desired high performance levels. The pixel body is built in the second level such that the fill factor and absorption of the detector is maximized. Structural and sacrificial layer thicknesses are also optimized in order to increase the absorption coefficient of the pixel in the 8-12 &mu
m wavelength range. The thermal simulations are conducted using finite element method (FEM) by CoventorWare software. The designed pixel has a fill factor of 92 % together with the thermal conductance and thermal time constant values calculated as 16.8 nW/K and 19.3 ms in the simulations, respectively. The pixels are fabricated at METU MEMS facilities after the design of a CMOS compatible process flow. All process steps are optimized individually to obtain the expected high performance. Characterization step of the pixels includes the measurements of temperature coefficient of resistance (TCR), noise and thermal conductance value together with the thermal time constant. Effective TCR of the pixel is measured as -2.81 %/K for a pixel with a support arm resistance of 8 k&Omega
and total resistance of 55 k&Omega
. The corner frequency of 1/f noise in the pixel is 9.5 kHz and 1.4 kHz under 20 &mu
A and 10 &mu
A current bias, respectively. The total rms noise is 192 pA within 8.4 kHz bandwidth for a current bias of 20 &mu
A. Thermal conductance, Gth, of the pixel is measured as 17.4 nW/K with a time constant of 17.5 ms. The measurement results indicate that the single pixels designed and fabricated in the scope of this thesis are applicable to large format FPAs in order to obtain a high performance imager. The expected NETD values are 33 mK and 36 mK for 384x288 and 640x480 format FPAs, respectively.
APA, Harvard, Vancouver, ISO, and other styles
5

Akcoren, Dincay. "A Low-cost Uncooled Infrared Detector Array And Its Camera Electronics." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613082/index.pdf.

Full text
Abstract:
This thesis presents the development of integrated readout electronics for diode type microbolometers and development of external camera electronics for microbolometers. The developed readout electronics are fabricated with its integrated 160x120 resolution FPA (Focal Plane Array) in the XFAB SOI-CMOS 1.0 &mu
m process. The pixels in the FPA have 70 &mu
m pixel pitch, and they are sensitive in the 8&ndash
12 &mu
m band of the infrared spectrum. Each pixel has 4 serially connected diodes, and diode turn on voltage changes as the temperature of the suspended and thermally isolated pixel increases due to the absorbed infrared power. Suspension of the pixels is obtained with a post-CMOS MEMS etching process, but this process requires no critical litography and/or deposition steps. This dramatically reduces the detector process cost, which makes this microbolometer FPA suitable for ultra low-cost applications such as automobile, security, and commercial applications. The readout electronics of the FPA include digital blocks such as timing and programming blocks as well as analog blocks such as a differential trans-conductance amplifier, a switched capacitor integrator, a sampleand- hold, and current DACs. This new readout design has reduced number of pins to simplify the external electronics and allows wafer-level vacuum packaging compared to the 128x128 FPA developed in a previous study at METU with the same approach. Both of these features further decrease the cost. Two kinds of external camera electronics are developed for two SOI type microbolometers. The first one is for the 128x128 SOI microbolometer previously designed in METU. The developed external camera electronics have 1.5mVrms noise, which is much less than the microbolometer noise. The overall system has an average NETD of 465 mK and a peak NETD of 320mK. The second developed external camera electronics are for the 160x120 SOI microbolometers that developed in the scope of this thesis. The developed external camera electronics has 0.55mVrms noise which is much less than the bolometer noise which is 5mVrms. The overall system has an average NETD of 820 mK and a peak NETD of 350 mK. Each of these external camera electronics include a custom designed PCB, an FPGA board with appropiate configurion and a software working on a PC. The custom designed PCB holds the external components for the microbolometer, an FPGA takes and processes the bolometer data and it sends to a PC, and a PC processes these data and forms a streaming video. These two external camera electronics allow to obtain human images verifying that the developed microbolometers can be used for security and automotive applications.
APA, Harvard, Vancouver, ISO, and other styles
6

Kebapci, Basak. "Development Of High Performance Uncooled Infrared Detector Materials." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613070/index.pdf.

Full text
Abstract:
This thesis reports both the optimizations of the vanadium oxide (VOx) thin film as an active infrared detector material by the magnetron sputtering deposition method and its use during fabrication of proper resistors for the microbolometers. Vanadium oxide is a preferred material for microbolometers, as it provides high TCR value, low noise, and reasonable resistance, and a number of high-tech companies have used this material to obtain state-of-the-art microbolometer arrays. This material is first used in microbolometers by Honeywell, who provides its recipe with license agreements, and there is not much information in the literature for its deposition recipe. This is the first study at METU for development of vanadium oxide thin film for microbolometers. The VOx material deposition studies started by identifying the deposition parameters of the magnetron sputtering system in order to obtain proper VOx resistors for the readout electronics. The obtained recipe includes high temperature deposition conditions of VOx, however, this causes a diffusion problem on the electrodes, preventing to obtain a good contact to VOx. Also, high oxygen level in the depositions makes a contamination on the electrodes. A number of studies were done to determine a proper electrode material which is proper with the deposition conditions of the VOx. Characterization of the vanadium oxide samples is done by XRD and XPS measurements to see the relation between the phases and resistivity of the vanadium oxide. It is known that V2O5 phase provides a high TCR and resistivity value, and the XRD results show that this phase is dominant in the highly-oxygen doped or annealed resistors. The TCR and noise measurements are done using resistors implemented with the developed VOx film, after the etching processes of the both VOx and the electrodes are optimized. The contamination on the electrodes is prevented by the help of a newly designed process. The TCR measurement results show that annealing of the resistors affect the TCR values, i.e., increasing the annealing duration increases the TCR values of the resistors. Two different resistors with different deposition conditions are annealed to see the effect of annealing, where TCR results of the resistors are -0.74%/K and -0.8 %/K before annealing. The TCR values of these resistors increase to -1.6 %/K and -4.35 %K, respectively, after annealing in same conditions, showing that both the deposition conditions and annealing change the TCR significantly. Although good TCR values are obtained, the noise values of the VOx resistors are much higher than the expected values, which suggest a further study to determine the cause of this noise.
APA, Harvard, Vancouver, ISO, and other styles
7

Yildirim, Omer Ozgur. "High Performance Readout Electronics For Uncooled Infrared Detector Arrays." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607504/index.pdf.

Full text
Abstract:
This thesis reports the development of high performance readout electronics for resistive microbolometer detector arrays that are used for uncooled infrared imaging. Three different readout chips are designed and fabricated by using a standard 0.6 µ
m CMOS process. Fabricated chips include a conventional capacitive transimpedance amplifier (CTIA) type readout circuit, a novel readout circuit with dynamic resistance nonuniformity compensation capability, and a new improved version of the CTIA circuit. The fabricated CTIA type readout circuit uses two digital-to-analog converters (DACs) with multiple analog buses which compensate the resistance nonuniformity by adjusting the bias currents of detector and reference resistors. Compensated detector current is integrated by a switched capacitor integrator with offset cancellation capability followed by a sample-and-hold circuit. The measured detector referred current noise is 47.2 pA in an electrical bandwidth of 2.6 KHz, corresponding to an expected SNR of 530. The dynamic nonuniformity compensation circuit uses a feedback structure that dynamically changes the bias currents of the reference and detector resistors. A special feature of the circuit is that it provides continuous compensation for the detector and reference resistances due to temperature changes over time. Test results of the fabricated circuit show that the circuit reduces the offset current due to resistance nonuniformity 42.5 times. However, the calculated detector referred current noise is 360 pA, which limits the circuit SNR to 70. The improved CTIA type readout circuit introduces a new detector biasing method by using an additional auxiliary biasing transistor for better current controllability. The improved readout circuit alleviates the need for high resolution compensation DACs, which drastically decreases the circuit area. The circuit occupies an area of one seventh of the first design. According to test results, the current compensation ratio is 170, and the detector referred current noise is 48.6 pA in a 2.6 KHz bandwidth.
APA, Harvard, Vancouver, ISO, and other styles
8

Toprak, Alperen. "Cmos Readout Electronics For Microbolometer Type Infrared Detector Arrays." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610390/index.pdf.

Full text
Abstract:
This thesis presents the development of CMOS readout electronics for microbolometer type infrared detector arrays. A low power output buffering architecture and a new bias correction digital-to-analog converter (DAC) structure for resistive microbolometer readouts is developed
and a 384x288 resistive microbolometer FPA readout for 35 µ
m pixel pitch is designed and fabricated in a standard 0.6 µ
m CMOS process. A 4-layer PCB is also prepared in order to form an imaging system together with the FPA after detector fabrication. The low power output buffering architecture employs a new buffering scheme that reduces the capacitive load and hence, the power dissipation of the readout channels. Furthermore, a special type operational amplifier with digitally controllable output current capability is designed in order to use the power more efficiently. With the combination of these two methods, the power dissipation of the output buffering structure of a 384x288 microbolometer FPA with 35 µ
m pixel pitch operating at 50 fps with two output channels can be decreased to 8.96% of its initial value. The new bias correction DAC structure is designed to overcome the power dissipation and noise problems of the previous designs at METU. The structure is composed of two resistive ladder DAC stages, which are capable of providing multiple outputs. This feature of the resistive ladders reduces the overall area and power dissipation of the structure and enables the implementation of a dedicated DAC for each readout channel. As a result, the need for the sampling operation required in the previous designs is eliminated. Elimination of sampling prevents the concentration of the noise into the baseband, and therefore, allows most of the noise to be filtered out by integration. A 384x288 resistive microbolometer FPA readout with 35 &
#956
m pixel pitch is designed and fabricated in a standard 0.6 &
#956
m CMOS process. The fabricated chip occupies an area of 17.84 mm x 16.23 mm, and needs 32 pads for normal operation. The readout employs the low power output buffering architecture and the new bias correction DAC structure
therefore, it has significantly low power dissipation when compared to the previous designs at METU. A 4-layer imaging PCB is also designed for the FPA, and initial tests are performed with the same PCB. Results of the performed tests verify the proper operation of the readout. The rms output noise of the imaging system and the power dissipation of the readout when operating at a speed of 50 fps is measured as 1.76 mV and 236.9 mW, respectively.
APA, Harvard, Vancouver, ISO, and other styles
9

Grbovic, Dragoslav. "Imaging by Detection of Infrared Photons Using Arrays of Uncooled Micromechanical Detectors." 2008. http://trace.tennessee.edu/utk_graddiss/404.

Full text
Abstract:
The objective of this dissertation was to investigate the possibility of uncooled infrared imaging using arrays of optically-probed micromechanical detectors. This approach offered simplified design, improved reliability and lower cost, while attaining the performance approaching that contemporary uncooled imagers. Micromechanical infrared detectors undergo deformation due to the bimetallic effect when they absorb infrared photons. The performance improvements were sought through changes in structural design such as modification and simplification of detector geometry as well as changes in the choice of materials. Detector arrays were designed, fabricated and subsequently integrated into the imaging system and relevant parameters, describing the sensitivity and signal-to-noise ratio, were characterized. The values of these parameters were compared to values published for other uncooled micromechanical detectors and commercial uncooled detectors. Several designs have been investigated. The first design was made of standard materials for this type of detectors - silicon nitride and gold. The design utilized changes in detector geometry such as reduction in size and featured an optical resonant cavity between the detector and the substrate on which arrays were built. This design provided decrease in levels of noise equivalent temperature difference (NETD) to as low as 500 mK. The NETD parameter limits the lowest temperature gradient on the imaged object that can be resolved by the imaging device. The second design used silicon dioxide and aluminum, materials not yet fully investigated. It featured a removed substrate beneath each detector in the array, to allow unobstructed transmission of incoming IR radiation and improve the thermal isolation of the detector. Second design also featured an amorphous silicon layer between silicon dioxide and aluminum layers, to serve as an optical resonant cavity. The NETD levels as low as 120 mK have been achieved. The only difference between the third and the second design was the modification of the geometry to minimize the noise. Successfully obtained thermal images and improved NETD values, approaching those of modern uncooled imagers (20 mK for commercial bolometer-based detectors), confirm the viability of this approach. With further improvements, this approach has a potential of becoming a lowcost alternative for uncooled infrared imaging.
APA, Harvard, Vancouver, ISO, and other styles
10

Topaloglu, Nezih. "Analysis and Modeling of Uncooled Microbolometers with Tunable Thermal Conductance." Thesis, 2009. http://hdl.handle.net/10012/4429.

Full text
Abstract:
Uncooled microbolometers have attracted significant interest due to their small size, low cost and low power consumption. As the application range of microbolometers broadens, increasing the dynamic range becomes one of the main objectives of microbolometer research. Targeting this objective, tunable thermal conductance microbolometers have been proposed recently, in which the thermal conductance is tuned by electrostatic actuation. Being a new concept in the field, the current tunable thermal conductance microbolometers have significant potential for improvement in design and performance. In this thesis, an extensive analysis of tunable thermal conductance microbolometers is made, an analytical model is constructed for this purpose, and solutions are proposed to some potential problems such as in-use stiction and variation in spectral response. The current thermal conductance tuning mechanisms use the substrate for electrostatic actuation, which does not support pixel-by-pixel actuation. In this thesis, a new thermal conductance tuning mechanism is demonstrated, that enables pixel-by-pixel actuation by using the micromirror as an actuation terminal instead of the substrate. In addition, a stopper mechanism is used to decrease the risk of in-use stiction. With this new mechanism, the thermal conductance can be tuned by a factor of three at relatively low voltages, making it a promising thermal conductance tuning mechanism for adaptive infrared detectors. Effective estimation of the performance parameters of a tunable thermal conductance microbolometer in the design state requires an analytical model that combines the physics of infrared radiation detection and the thermal conductance tuning mechanisms. As a part of this research, an extensive analytical model is presented, which includes the electrostatic-structural modeling of the thermal conductance tuning mechanism, and electromagnetic and thermal modeling of the microbolometer. The accuracy of the thermal model is of significant importance as the operation of the tuning mechanism within the desired range should be verified in the design stage. A thermal model based on the solution of the microbolometer heat conduction equation is established, which is easily applicable to conventional and tunable thermal conductance microbolometers of various shapes. The constructed microbolometer model is validated by experiments and finite element model simulations. Furthermore, the effect of thermal conductance tuning on spectral response is analyzed. The present thermal conductance tuning mechanisms result in variations in spectral response, which is an undesired effect in many applications. As a solution, a new microbolometer architecture is proposed, in which the spectral response is not affected by thermal conductance. The microbolometer is designed using an analytical model and its performance is characterized by finite element model simulations. To realize the proposed design, a fabrication process flow is offered. It is shown that the proposed microbolometer exhibits high performance, tunable thermal conductance and constant spectral response.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Uncooled infrared detectors"

1

Micro and Nanophotonics for Semiconductor Infrared Detectors: Towards an Ultimate Uncooled Device. Springer, 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Jakšić, Zoran. Micro and Nanophotonics for Semiconductor Infrared Detectors: Towards an Ultimate Uncooled Device. Springer, 2016.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Uncooled infrared detectors"

1

Wood, R. A. "Uncooled Microbolometer Infrared Sensor Arrays." In Infrared Detectors and Emitters: Materials and Devices, 149–75. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1607-1_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bharadwaja, S. S. N., C. Venkatasubramanyam, N. Fieldhouse, B. Gauntt, Myung Yoon Lee, S. Ashok, E. C. Dickey, T. N. Jackson, and M. Horn. "Processing Issues in Pulse DC Sputtering of Vanadium Oxide Thin Films for Uncooled Infrared Detectors." In Ceramic Transactions Series, 177–85. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470930915.ch16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Weiler, Dirk, Marco Ruß, Daniel Würfel, Renee Lerch, Pin Yang, Jochen Bauer, Piotr Kropelnicki, Jennifer Heß, and Holger Vogt. "A Far Infrared VGA Detector Based on Uncooled Microbolometers for Automotive Applications." In Advanced Microsystems for Automotive Applications 2011, 327–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21381-6_31.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Noda, Minoru, Kouji Inoue, Morio Ogura, Huaping Xu, Shuichi Murakami, Hiroyuki Kishihara, and Masanori Okuyama. "An Uncooled Infrared Sensor of Dielectric Bolometer Mode Using a New Detector Technique of Operation Bias Voltage." In Transducers ’01 Eurosensors XV, 564–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-59497-7_134.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jiao, Leizi, Yun Lang, Daming Dong, and Kun Zhang. "Research on developing a miniature temperature measurement system based on uncooled infrared detector." In Energy Science and Applied Technology, 503–8. CRC Press, 2015. http://dx.doi.org/10.1201/b19779-114.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Uncooled infrared detectors"

1

Piotrowski, Jozef, and Antoni Rogalski. "Uncooled long-wavelength infrared photon detectors." In Integrated Optoelectronic Devices 2004, edited by Manijeh Razeghi and Gail J. Brown. SPIE, 2004. http://dx.doi.org/10.1117/12.531402.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rajic, Nik. "Uncooled detectors for high sensitivity synchronous thermography." In Quantitative InfraRed Thermography Asia 2017. QIRT Council, 2017. http://dx.doi.org/10.21611/qirt.2017.004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Tidrow, Meimei Z., William W. Clark III, W. Tipton, R. Hoffman, William A. Beck, S. C. Tidrow, D. N. Robertson, et al. "Uncooled infrared detectors and focal plane arrays." In Photonics China '98, edited by Pingzhi Liang, Marc Wigdor, and William G. D. Frederick. SPIE, 1998. http://dx.doi.org/10.1117/12.318098.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chen, Y. S., N. J. Wu, D. Liu, J. Fan, S. Dordevic, and A. Ignatiev. "Uncooled infrared detectors for space monitoring applications." In AIP Conference Proceedings Volume 387. ASCE, 1997. http://dx.doi.org/10.1063/1.52084.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mansi, M. V., T. J. Liddicoat, and L. J. Richards. "Thermal Imaging With Uncooled Pyroelectric Infrared Detectors." In Hague International Symposium, edited by H. M. Lamberton. SPIE, 1987. http://dx.doi.org/10.1117/12.941436.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Owen, Robert A., James F. Belcher, Howard R. Beratan, and Steve N. Frank. "Producibility advances in hybrid uncooled infrared detectors." In SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, edited by Eustace L. Dereniak and Robert E. Sampson. SPIE, 1994. http://dx.doi.org/10.1117/12.179686.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Datskos, Panos G., Slobodan Rajic, Irene Datskou, and Charles M. Egert. "Infrared microcalorimetric spectroscopy using uncooled thermal detectors." In Optical Science, Engineering and Instrumentation '97, edited by Michael R. Descour and Sylvia S. Shen. SPIE, 1997. http://dx.doi.org/10.1117/12.283834.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Wei, Jingxuan, Cheng Xu, Bowei Dong, and Chengkuo Lee. "Uncooled Zero-Bias Graphene Mid-Infrared Detectors." In 2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2021. http://dx.doi.org/10.1109/mems51782.2021.9375381.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Xu, Xiangdong, Zhuo Yang, Zhi Wang, Chao Chen, Dong Zhou, Yang Yang, and Yadong Jiang. "Advanced design of microbolometers for uncooled infrared detectors." In 2011 International Conference on Information Science and Technology (ICIST). IEEE, 2011. http://dx.doi.org/10.1109/icist.2011.5765352.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Unewisse, Mark H., Stephen J. Passmore, Kevin C. Liddiard, and Rodney J. Watson. "Performance of uncooled semiconductor film bolometer infrared detectors." In SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, edited by Bjorn F. Andresen. SPIE, 1994. http://dx.doi.org/10.1117/12.188679.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Uncooled infrared detectors"

1

Wu, Judy. Material Issues in Uncooled Ferroelectric Infrared Detectors. Fort Belvoir, VA: Defense Technical Information Center, March 2003. http://dx.doi.org/10.21236/ada415178.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Datskos, P. G., S. Rajic, I. Datskou, and C. M. Egert. Infrared microcalorimetric spectroscopy using uncooled thermal detectors. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/541859.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sarney, Wendy L., Kimberley A. Olver, John W. Little, Frank E. Livingston, Krisztian Niesz, and Daniel E. Morse. Materials Research of Perovskite Thin Films for Uncooled Infrared (IR) Detectors. Fort Belvoir, VA: Defense Technical Information Center, July 2011. http://dx.doi.org/10.21236/ada548946.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Blalock, T., and M. Reed. Uncooled Infrared Detector Arrays With Electrostatically Levitated Sensing Elements. Fort Belvoir, VA: Defense Technical Information Center, March 2005. http://dx.doi.org/10.21236/ada431988.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Sarney, Wendy L., Kimberley A. Olver, John W. Little, Frank E. Livingston, Krisztian Niesz, and Daniel E. Morse. Progress In Materials Synthesis And Processing Of Barium Titanium Oxide (BaTiO3) and Barium Strontium Titanium Oxide (BaTiSrO3) Films For Uncooled Infrared (IR) Detector Applications. Fort Belvoir, VA: Defense Technical Information Center, December 2011. http://dx.doi.org/10.21236/ada554856.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography