Temperature Dependence of Pressure Sensitive Paints

Schanze, Kirk S.; Carroll, Bruce; Korotkevitch, Svetlana; Morris, Martin

doi:10.2514/2.92

Cited by 59 publications

(18 citation statements)

References 17 publications

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“…The single emission is in contrast to phosphorescent organic molecules, which exhibit some degree of fluorescence and phosphorescence with a very different oxygen-quenching sensitivity. Its lifetime of 1.8 ms at vacuum and 0.13 ms at atmospheric air is suitable for application to unsteady pressure measurements [44]. The high photochemical stability is preferable in practical wind tunnel testing.…”

Section: Common Luminophores In Usementioning

confidence: 99%

A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

Gregory

Asai

Kameda

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part G:

343

176

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Abstract:The current paper describes the development of pressure-sensitive paint (PSP) technology as an advanced measurement technique for unsteady flow fields and short-duration wind tunnels. Newly developed paint formulations have step response times approaching 1 ms, making them suitable for a wide range of unsteady testing. Developments in binder technology are discussed, which have resulted in new binder formulations such as anodized aluminium, thin-layer chromatography plate, polymer/ceramic, and poly(TMSP) PSP. The current paper also details modeling work done to describe the gas diffusion properties within the paint binder and understand the limitations of the paint response characteristics. Various dynamic calibration techniques for PSP are discussed, along with summaries of typical response times. A review of unsteady and high-speed PSP applications is presented, including experiments with shock tubes, hypersonic tunnels, unsteady delta wing aerodynamics, fluidic oscillator flows, Hartmann tube oscillations, acoustics, and turbomachinery. Flowfields with fundamental frequencies as high as 21 kHz have been successfully measured with porous PSP formulations.

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Section: Common Luminophores In Usementioning

confidence: 99%

A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

Gregory

Asai

Kameda

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part G:

343

176

View full text Add to dashboard Cite

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“…There are also a large variety of luminescent probes and sensors for temperature (T; reviewed in detail in [618] ), since the lifetime of almost any luminescent dye depends on the temperature. Thus, often multi-sensors are used with one indicator for the analyte of interest and with a second indicator for the temperature [176][177][178][179][180][181][182] , which allows to compensate for temperature-related luminescence quenching effects [176,177,319,320,325,326] . Besides the conventional intensity-based measurements, other luminescence parameters such as decay time/ lifetime, anisotropy, quenching efficiency, FRET, ratiometric intensity, or dual-lifetime referencing (DLR) data are used for sensing, too.…”

Section: Discussionmentioning

confidence: 99%

“…Temperature instead promotes non-radiative relaxation processes of the excited triplet state, which is the ISC of 1 → 0 ( 1 → 0 = 10 1 -10 9 s −1 ). The temperature dependence of the ISC rate constant 1 → 0 is given by the Arrhenius relationship: [325,326]…”

Section: Temperature Sensitivity Of Luminescencementioning

confidence: 99%

Label-free and Multi-parametric Monitoring of Cell-based Assays with Substrate-embedded Sensors

Oberleitner

2018

Springer Theses

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These cellular responses and the accompanying changes of physicochemical parameters are what is to be detected and transferred into a measurable electrical signal by the transducer units of the label-free biosensor devices (Fig. 1-1). There are various types of transducers, distinguishable by the underlying physicochemical phenomenon: electrochemical (including potentiometric, amperometric, and impedimetric), optical, thermometric, piezoelectric, and magnetic transduction. [8] Tab. 1-1 gives an LAPSLight-addressable potentiometric sensors (LAPSs) are multilayer field-effect devices similar to ISFETs [66] . A LAPS consists of a doped semiconductor covered with an insulator layer and a chemosensitive layer. The device is immersed in an electrolyte solution. The semiconductor is connected with a reference electrode in contact with the electrolyte (Fig. 1-2 B; reviewed in [10,17,[67][68][69][70] with respect to biological and cell-based applications). The insulator material of LAPSs is typically made up either of a single SiO 2 layer 1.1 Label-free Biosensors for Cell-based Assays 7 chip-based systems for the label-free and continuous monitoring of DO in cell-based assays, i.e. the oxygen consumption rate (OCR) of cells. [47,48,50,53,54,57,[60][61][62] The sensor chips with integrated amperometric oxygen sensors are typically build up as multi-parametric sensors and contain further physicochemical transducer structures like e.g. for cell morphology testing and ECAR monitoring. Besides the direct measurement of DO, the amperometric sensors are also capable of sensing indirectly any species that is consumed or produced in an oxidase-based enzymatic reaction (amperometric enzyme sensor) via the oxygen or hydrogen peroxide concentration. For this purpose, the amperometric pO 2 sensor is coated with a layer in which the respective enzyme is immobilized and which enables free diffusion of all reactants between the bulk solution and the sensor surface. This approach was first presented by Clark and Lyons as an amperometric sensor for glucose [85] and has also been applied as transduction method in cell-based assays for the label-free determination and monitoring of glucose and lactose [78,79] . A list of physiologically relevant analytes that have been successfully monitored by amperometric enzyme sensors is given in [86] . ECISElectrical impedance-based sensing of adherent cells, also termed as electric cell-substrate impedance sensing (ECIS), utilizes the property of cells to impede AC current flow when they are in close contact to the substrate, i.e. a small gold-film working electrode (Fig. 1-2 D). This technique was presented first by Giaever and Keese in 1984 [87] as "morphological biosensor for mammalian cells" [88] . The principle of ECIS, the method of impedance spectroscopy, and the analysis, physiological meaning, and modeling of impedance data are extensively addressed in the methods section 3.4 Electric Cell-Substrate Impedance Sensing (ECIS). Briefly summarized, ECIS enables the time-resolved, label-free, and ...

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“…In general, antimicrobial coatings are made either by incorporating biocidal agents into formulation, or polymer structures (31,32). All of the four classes disrupt the microorganisms' usual activity thereby, rendering it inactive (33).…”

Section: Figure 3 Schematic Representation Of Switching Behavior Of mentioning

confidence: 99%

“…Ruthenium (18)(19)(20).Iridium (21)(22)(23)(24), as well as platinum (25)(26)(27)(28)(29)(30) as the luminophore. The phosphorescent dyes are usually dissolved into, or are part of a polymer matrix.…”

Section: Figure 3 Schematic Representation Of Switching Behavior Of mentioning

confidence: 99%

Smart Coatings

Baghdachi

2009

ACS Symposium Series

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Materials that are capable of adapting their properties dynamically to an external stimulus are called responsive, or smart. The term "smart coating" refers to the concept of coatings being able to sense their environment and make an appropriate response to that stimulus. The standard thinking regarding coatings has been as a passive layer unresponsive to the environment. The current trend in coatings technology is to control the coating composition on a molecular level and the morphology at the nanometer scale. The idea of controlling the assembly of sequential macromolecular layers and the development that materials can form defined structures with unique properties is being explored for both pure scientific research and industrial applications. Several smart coating systems have been developed, examined, and are currently under investigation by numerous laboratories and industries throughout the world. Examples of smart coatings include stimuli responsive, antimicrobial, antifouling, conductive, self-healing, and super hydrophobic systems.

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Temperature Dependence of Pressure Sensitive Paints

Cited by 59 publications

References 17 publications

A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

A review of pressure-sensitive paint for high-speed and unsteady aerodynamics

Label-free and Multi-parametric Monitoring of Cell-based Assays with Substrate-embedded Sensors

Smart Coatings

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