Contents & References of Making a humidity sensor using carbon nanotubes
List:
1 Introduction.. 1
Humidity measurement units. 2
Communication between different units. 3
Chapter 2 types of humidity sensors. 6
2-1- Different mechanisms for identifying humidity. 6
2-1-1- Temperature humidity meter. 7
2-1-2- LiCl dew point sensor. 8
2-1-3- Capacitive humidity sensors. 9
2-1-4- Resistive humidity sensors. 11
2-1-5- Hygrometric humidity sensors. 12
2-1-6- Optical hygrometers. 13
2-1-7- Weighing humidity sensors. 14
2-2- Chemical properties of materials used in different types of humidity sensors. 16
2-2-1- Sensitive ceramic materials. 16
2-2-1-1- aluminum oxide. 19
2-2-1-2- titanium oxide. 19
2-2-1-3- silicon oxide. 20
2-2-1-4- Spinal compounds. 21
2-2-2- The use of carbon nanotubes in humidity sensors. 22
Title
Chapter 3 How to make sensors and measuring devices. 26
3-1- An overview of carbon nanotubes. 26
3-1-1- The structure of carbon nanotubes. 29
3-1-2- Production methods of nanotubes. 31
3-1-2-1- Chemical vapor deposition (CVD) method. 31
3-1-2-2- Electric arc method. 32
3-1-2-3- laser vaporization method. 32
3-1-3- Properties of carbon nanotubes and their applications. 33
3-2- The method of making the sensor studied in this thesis. 36
3-3- Circuit diagram of measurement systems. 39
3-3-1- Measuring device number one. 39
3-3-2- Measuring device number two. 42
3-3-3- measuring device number three. 43
3-3-4- measuring device number four. 44
Chapter 4 simulation and experiments. 46
4-1- Checking the performance of the sensor from a theoretical point of view. 46
4-1-1- An introduction to density functional theory (DFT). 50
4-1-2- Solving the Schr?dinger equation. 51
4-1-3- Hohenberg-Cohen theories. 52
4-1-4- Cohen-Shem theory. 54
4-1-5- local density approximation (LDA). 56
4-1-6- The results of simulating sensor performance using DFT theory and LDA approximation 58
4-2- The results of experiments. 62
Title . 62
4-2-2- Checking the rise and fall time. 63
4-2-3- checking the temperature behavior of the sensor. 67
4-2-3-1- variable temperature and constant humidity. 67
4-2-3-2- Temperature and humidity are both variables. 68
4-2-4- Check sensor size change. 69
4-2-5- Examining the effects of disturbances. 72
4-2-6- Checking the re-baking temperature of the sensor. 73
4-2-7- Checking the detection limit of the sensor. 74
4-2-8- Reproducibility check. 74
4-2-9- Comparison with a sample sensor made in other articles. 76
4-2-10- Investigation of other carbon nanostructures for humidity sensor. 78
Chapter 5 conclusions and suggestions. 86
5-1- Conclusion.. 86
5-2- Suggestions to continue the work. 87
References. 89
Source:
H.P. Penman, Humidity, Chapman and Hall, London. 1955.
Y. Ma, S. Ma, W. Fang, T. Wang, Air-flow sensor and humidity sensor application to neonatal infant respiration monitoring, Sens. Actuaries A 49 (1995) 47-50.
V. Matko, D. Donlagic, Sensor for high-air-humidity measurement, Sens. Actuators A 61 (1997) 331-334.
K.V. Heber, Humidity sensing at high temperatures, Sens. Actuators 12 (1987) 145-157.
http://www.iceweb.com.au/Analyzer/humidity_sensors.html (2005).
Zhi Chen and Chi Lu Humidity Sensors: A Review of Materials
Zhi Chen and Chi Lu Humidity Sensors: A Review of Materials and Mechanisms SENSOR LETTERS Vol. 3, 274–295, 2005
G.J.W. Visscher, Standard psychrometers: a matter of (p) references, Meas. Sci. Technol. 6 (1995) 1451-1461
J.R. Simoes-Moreira, A thermodynamic formulation of the psychrometer constant, Meas. Sci. Technol. 10 (1999) 302-311
F.C. Quinn, The most common problem of moisture/humidity measurement and control, in: Proceedings of the Conference on Humidity and Moisture, Washington DC, 1985, pp. 1-5.
H. Endres, H.D. Jander, W. Gottler, Test system for gas sensors, Sens. Actuators B 23 (1995) 163-172.
H. Mitter, Humidity Calibration-Simple and accurate, Proc. Sensor 99, Nurnberg, May 18-20, 1999, pp. 623-628
D.A. Mathews, Review of the Lithium Chloride radiosonde hygrometer, in: Proceedings of the Conference on Humidity and Moisture, Vol. VI, Washington DC, 1963, pp. 219-227
H. Mitter, Humidity Calibration-Simple and accurate, Proc. Sensor 99, Nurnberg, May 18-20, 1999, pp. 623-628
J.G. Korvink, L. Chandran, T. Boltshauser, H. Baltes, Accurate 3D capacitance evaluation in integrated capacitive humidity sensors, Sens. Mater. 4(6)(1993) 323-335.
R.S. Jachowicz, S.D. Senturia, A thin film capacitance humidity sensor, Sens. Actuators 2 (1981) 171-186.
K. Bratzler, Adsorption von Gasen und Dampfen in laboratorium und Technik, Theodor Steinkopf, Dresden, 1944.
K. Bratzler, Adsorption von Gasen und Dampfen in laboratorium und Technik, Theodor Steinkopf, Dresden, 1944.
G. Gerlach, K. Sager, A piezoresistive humidity sensor, Sens. Actuators A 43 (1994) 181-184
R. Buchhold, A. Nakladal, G. Gerlach, K.J. Eichhorn, G. Dlubek, Multiplying sensitivity and tailoring transfer function of bimorph humidity sensors by ion bombardment of the hygroscopic polymer layer, Proc. Transducers 99, Sendai, Japan, pp. 230-233.
N.T.T. Ha, D.K. An, P.V. Phong, P.T.M. Hoa, L.H. Mai, Study and performance of humidity sensor based on the mechanical optoelectronic principle for the measurement and control of humidity in store hoses, Sens. Actuators B 66 (2000) 200-202.
E. Radeva, V. Georgiev, L. Spassov, N. Koprinarov, St. Kanev, Humidity adsorptive properties of thin fullerene layers studied by means of quartz microbalance, Sens. Actuators B 42 (1997) 11-13
H.T. Sun, Z.T. Cheng, X. Yao, W. Wlodarski, Humidity sensor using sol-gel-derived silica coating on quartz crystal, Sens. Actuators B 13/14 (1993) 107-110
F. Pascal-Delannoy, B. Sorli, A. Boyer, Quartz crystal microbalance (QCM) used as humidity sensor, Sens. Actuators A 84 (2000) 285-291
B. Morten, G. De Cicco, M. Prudenziati, A thick-film resonant sensor for humidity measurements, Sens. Actuators A 37/38 (1993) 337-342
A. Gluck, W. Halder, G. Lindner, H. Muller, P. Weindler, PVDF-excited resonance sensors for gas flow and humidity measurements, Sens. Actuators B 18/19 (1994) 554-557.
A.J. Slobodnik, Surface acoustic waves and SAW materials, Proc. IEEE 64 (5) (1976) 581-595.
Ansbacher and A. C. Jason, Nature 24, 177 (1953).
T. Moromoto, M. Nagao, and F. Tokuda, J. Phys. Chem. 73, 243 (1969).
E. McCafferty and A. C. Zettlemoyer, Faraday Discussions 52, 239 (1971).
V. K. Khanna and R. K. Nahar, J. Phys. D:Appl. Phys. 19, L141 (1986).
L. Young, Anodic Oxide Films, Academic Press, New York (1961).
E. C. Dickey, O. K. Varghese, K. G. Ong, D. Gong, M. Paulose, and C. A. Grimes, Sensors 2, 91 (2002).
C. A. Grimes, D. Kouzoudis, E. Dickey, D. Qian, M. A. Anderson, R. Shahidain, M. Lindsey, and L. Green, J. Appl. Phys. 87, 5341 (2000).
S.A. Krutovertsev, A. E. Tarasova, L. S. Krutovertseva, and A. V. Zorin, Sens. Actuators A 62, 582 (1997).
K. Robbie and M.J. Brett, J. Vac. Sci. Technol. A 15, 1460 (1997).
G. Gusmano, G. Montesperelli, and E. Traversa, Sens.