Abstract
For the development of micro- and nano-technology, it has been strongly desired to understand thermo-fluid phenomena inside or around micro- and nano-devices. An optical measurement technique based on the absorption and the emission of photons by molecules is useful for experimental analyses of thermo-fluid phenomena of micro and nanoflows. The pressure-sensitive paint (PSP) technique is a potential diagnostic tool for pressure measurements of micro/nano gas flows because it works as a so-called "molecular sensor". However, the micro-scale measurement of PSP has been limited by the aggregation of the luminescent molecules and their thick film due to the use of a polymer binder. In our previous work, we adopted the Langmuir-Blodgett (LB) technique to fabricate pressure-sensitive molecular film (PSMF) with ordered molecular assemblies, and investigated properties of PSMF. In this study, a novel approach to enhance the luminescent intensity of PSMF is proposed, and the pressure distribution in a micro-nozzle is successfully measured by using PSMF. Moreover, we compared the pressure distribution measured by PSMF with that numerically analyzed by the direct simulation monte carlo (DSMC) method, showing good agreement with each other.
| Original language | English |
|---|---|
| Pages (from-to) | 165-171 |
| Number of pages | 7 |
| Journal | Microfluidics and Nanofluidics |
| Volume | 10 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2011 Jan 1 |
| Externally published | Yes |
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Keywords
- Flow visualization
- Micro gas flow
- Pressure-sensitive molecular film
- Pressure-sensitive paint
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Materials Chemistry
Cite this
Pressure-sensitive molecular film for investigation of micro gas flows. / Matsuda, yu; Uchida, Toru; Suzuki, Suguru; Misaki, Ryota; Yamaguchi, Hiroki; Niimi, Tomohide.
In: Microfluidics and Nanofluidics, Vol. 10, No. 1, 01.01.2011, p. 165-171.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Pressure-sensitive molecular film for investigation of micro gas flows
AU - Matsuda, yu
AU - Uchida, Toru
AU - Suzuki, Suguru
AU - Misaki, Ryota
AU - Yamaguchi, Hiroki
AU - Niimi, Tomohide
PY - 2011/1/1
Y1 - 2011/1/1
N2 - For the development of micro- and nano-technology, it has been strongly desired to understand thermo-fluid phenomena inside or around micro- and nano-devices. An optical measurement technique based on the absorption and the emission of photons by molecules is useful for experimental analyses of thermo-fluid phenomena of micro and nanoflows. The pressure-sensitive paint (PSP) technique is a potential diagnostic tool for pressure measurements of micro/nano gas flows because it works as a so-called "molecular sensor". However, the micro-scale measurement of PSP has been limited by the aggregation of the luminescent molecules and their thick film due to the use of a polymer binder. In our previous work, we adopted the Langmuir-Blodgett (LB) technique to fabricate pressure-sensitive molecular film (PSMF) with ordered molecular assemblies, and investigated properties of PSMF. In this study, a novel approach to enhance the luminescent intensity of PSMF is proposed, and the pressure distribution in a micro-nozzle is successfully measured by using PSMF. Moreover, we compared the pressure distribution measured by PSMF with that numerically analyzed by the direct simulation monte carlo (DSMC) method, showing good agreement with each other.
AB - For the development of micro- and nano-technology, it has been strongly desired to understand thermo-fluid phenomena inside or around micro- and nano-devices. An optical measurement technique based on the absorption and the emission of photons by molecules is useful for experimental analyses of thermo-fluid phenomena of micro and nanoflows. The pressure-sensitive paint (PSP) technique is a potential diagnostic tool for pressure measurements of micro/nano gas flows because it works as a so-called "molecular sensor". However, the micro-scale measurement of PSP has been limited by the aggregation of the luminescent molecules and their thick film due to the use of a polymer binder. In our previous work, we adopted the Langmuir-Blodgett (LB) technique to fabricate pressure-sensitive molecular film (PSMF) with ordered molecular assemblies, and investigated properties of PSMF. In this study, a novel approach to enhance the luminescent intensity of PSMF is proposed, and the pressure distribution in a micro-nozzle is successfully measured by using PSMF. Moreover, we compared the pressure distribution measured by PSMF with that numerically analyzed by the direct simulation monte carlo (DSMC) method, showing good agreement with each other.
KW - Flow visualization
KW - Micro gas flow
KW - Pressure-sensitive molecular film
KW - Pressure-sensitive paint
UR - http://www.scopus.com/inward/record.url?scp=79551486276&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79551486276&partnerID=8YFLogxK
U2 - 10.1007/s10404-010-0664-6
DO - 10.1007/s10404-010-0664-6
M3 - Article
AN - SCOPUS:79551486276
VL - 10
SP - 165
EP - 171
JO - Microfluidics and Nanofluidics
JF - Microfluidics and Nanofluidics
SN - 1613-4982
IS - 1
ER -