Axel Mellinger 2004 Meas. Sci. Technol. 15 1347 doi:10.1088/0957-0233/15/7/017
Unbiased iterative reconstruction of polarization and space-charge profiles from thermal-wave experiments
Axel Mellinger
Show affiliationsThe thermal-wave technique or laser-intensity modulation method is an important tool for the non-destructive probing of space-charge and polarization profiles in electrets. Analysing the experimental data requires solving a Fredholm integral equation which is known to be an ill-conditioned problem. This paper presents an iterative approach that is capable of reconstructing inherently unsmooth distributions. The deviations from the true profiles are slightly smaller than those obtained with Tikhonov regularization, while the computational burden is not a limiting factor on modern personal computers. The optimum number of iterations is estimated using the randomized generalized cross-validation technique. Results are shown for a number of model distributions, as well as for experimental data from a layered polyvinylidene fluoride film sandwich.
- PACS
-
77.70.+a Pyroelectric and electrocaloric effects
77.84.-s Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials
- Subjects
- Dates
-
Issue 7 (July 2004)
Received 6 November 2003, in final form 18 May 2004
Published 16 June 2004
-
Unbiased iterative reconstruction of polarization and space-charge profiles from thermal-wave experiments
Axel Mellinger 2004 Meas. Sci. Technol. 15 1347
-
Topological obstructions to smoothness for infinitely renormalizable maps of the disc
F J Moreira 2004 Nonlinearity 17 1547
-
Multi-photon high-excitation-energy approach to fibre grating inscription
David N Nikogosyan 2007 Meas. Sci. Technol. 18 R1
-
A ladder inequality for the Navier-Stokes equation
Igor Kukavica 2000 Nonlinearity 13 639
-
Enhanced photocatalytic properties of quantum-sized ZnO induced by La3+-Nd3+ co-doping
S X Lu et al 2009 J. Phys.: Conf. Ser. 188 012007
-
Internal forces and the magnetoconductivity of a nondegenerate 2D electron fluid
P Fozooni et al 1996 J. Phys.: Condens. Matter 8 L215
-
A dual-thermistor probe for absolute measurement of thermal diffusivity and thermal conductivity by the heat pulse method
Haifeng Zhang et al 2003 Meas. Sci. Technol. 14 1396
-
Reply to `Comments on `Comparison of in vitro and in vivo α/β ratios for prostate cancer''
Jian Z Wang et al 2005 Phys. Med. Biol. 50 L5
-
Conductance anomalies in gated V-groove quantum wires
V V Larkin et al 2002 Nanotechnology 13 487
-
Minimum uncertainty states for the quantum group
and quantum Wigner d-functions
A Mann and R Parthasarathy 1996 J. Phys. A: Math. Gen. 29 427