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Sarun Sumriddetchkajorn

Dr.  Sarun Sumriddetchkajorn, Ph.D.

Principal Researcher/ Director
Intelligent Devices and Systems Research Unit
National Electronics and Computer Technology Center
National Science and Technology Development Agency
112 Thailand Science Park, Phahonyothin Rd.
Klong 1, Klong Luang
Pathumthani  12120

tel: +66-2564-6900 ext. 2102
fax: +66-2564-6768
E-mail: sarun.sumriddetchkajorn@nectec.or.th
Web: http://www.nectec.or.th

Area of Expertise

Photonics Information Processing Systems, Agri-Photonics, Bio-Photonics


Sarun Sumriddetchkajorn received his B.Eng. in electrical engineering with honors in 1994 from Khon Kaen University, Thailand. In 1996, he was awarded a Thai government scholarship and then joined the School of Optics/Center for Research and Education in Optics and Lasers (CREOL) at the University of Central Florida (UCF) in Orlando, Florida. He earned his M.S. and Ph.D. in optical science and engineering in 1998 and 2000, respectively, based on his work in fiber-optic beam control systems using microelectromechanical systems (MEMS).

From 1994-1996, he was an assistant researcher with National Electronics and Computer Technology Center (NECTEC)’s Electro-Optics Laboratory, Thailand, in which he focused on embossed hologram processing and computer generated holograms. He worked at Nuonics Inc., in Orlando, Florida, USA, as a company’s first photonics engineer in 2001 focusing on the design, analysis, and test fiber-optic processors that utilized MEMS, liquid crystal, and acousto-optic technologies.

Since May 2001, he has rejoined NECTEC as a young active researcher and established Thailand’s first photonics laboratory. At his present position as the Director of NECTEC’s Intelligent Devices and Systems Research Unit, he oversees three research groups: photonics technology, MEMS and nanoelectronics, and optical thin film. For his research work, he aims to combine his expertise in photonics, electrical engineering, and computer programming to solve problems for medical, environmental, agricultural and industrial sectors.

Apart from his research work, he initiated the formations of the Optical Society of America (OSA)’s and IEEE-LEOS (now Photonics Society)’s Thailand Chapters in 2002 and later on in 2005 the Society for Photo-Optical Instrumentation Engineer (SPIE) Thailand Chapter. In addition, he has put his effort in promoting optics/photonics to schools and general public by initiating “Shining-Spectrum-to-Society” project. During 2004-2005, he wrote a weekly article in Thai language about basic optics and its applications in daily life and published it in the BangkokBizNews newspaper to show to the public that optics is everywhere and it is not a difficult subject to learn. His weekly articles was also collected and published in a book entitled “Photonics...the miracle of light” in 2006 and so far it has been sold for 2500 copies.

Dr. Sumriddetchkajorn has received several awards. He is the only person to receive all three highly-competitive student awards from the three international optical societies: the OSA New Focus Student Award in 1999, the SPIE highest prize “D. J. Lovell Award” in 2000, and the IEEE-LEOS Graduate Fellowship Award in 2000. He was also awarded the 2003 Young Technologist and the 2004 Young Scientist in the field of photonics from the Foundation for the Promotion of Science and Technology under the patronage of H. M. the King of Thailand. In 2005, he was the only one to be awarded the ICO/ICTP prize from the International Commission for Optics (ICO) and the Abdus Salam International Centre for Theoretical Physics (ICTP). He is now a senior member of OSA, SPIE, and IEEE.

Lecture Title(s)

Data-non-intrusive photonics-based credit card verifiers
This talk will highlight our proposed hyperspectral imaging-based optical structure for verifying a credit card without invading privacy data of the credit card’s owner. Our key idea comes from the fact that the fine detail of the embossed hologram stamped on the credit card is hard to duplicate and therefore its key color features can be used for distinguishing between the real and counterfeit ones. In our proposed architecture, by realizing that the embossed hologram is a diffractive optical element, we shine one at a time a number of broadband lightsources, each at different incident angle, on the embossed hologram of the credit card in such a way that different color spectra per incident angle beam are diffracted and separated in space. By using a feed-forward neural network, our proposed system can effectively separate genuine and counterfeit credit cards with a false rejection rate (FRR) of 5.26%. Much lower FRR below 0.79% is accomplished experimentally by increasing the number of lightsources, deploying an area selective approach, and analyzing the center of mass of the image histogram projected onto the x axis. Key features include low cost, simplicity, no moving part, no need of an additional decoding key, and adaptive learning.

Thermal Analyzer for Deceptive Detection

With the limit of the intrusive nature of the current polygraph, we show here a highly-sought-after non-intrusive lie detection system. The key idea behind our TAD2 is based on the analysis of far-infrared data obtained remotely from the periorbital and nostril areas of the suspect during the interrogation. In this way, measured change in skin temperature around two periorbital areas is converted to a relative blood flow velocity while a respiration pattern is simultaneously determined from the measured change in temperature around the nostril region. In addition, it is embedded with our automatic baseline assignment that is used for distinguishing the subject’s response into normal or abnormal stage. It also supports three widely-used standard lie detection tests. Field test results from suspects in real crime cases show a promising overall classification rate of 84.4%.

Fourier-Optics based Object Assessment System for Quality Control Purpose

This talk will introduce our quality assessment system for a sub-millimeter thick wafer bar suitable for semiconductor and harddisk drive industries. Our key approach is based on Fourier optics analysis in retro-reflective and transmissive optical architectures featuring nondestructive and non-contact measurement. Important parameters of the wafer bar such as thickness, surface parallelism, edge parallelism, and surface defect can simultaneously be analyzed. To our knowledge, this is the first time that these important parameters are analyzed by only one system. Other key features include low cost and vibration insensitivity.

Diffusing optics and photonics in our community

This talk will focus on activities in our “Shining-Spectrum-to-Society” project where we aim to raise the public awareness of science and technology in optics and photonics. We combine hands-on, media engineering, social networking, inquiry, and problem –based approaches to nurture and reinforce the scientific thinking method to students, teachers and general publics. Available media related to basic optics and applications in everyday life are used to get their attentions as well as to encourage students to do their science or engineering projects. In addition, we have developed an educational “Learning by Playing with Photonics” kit comprising of 20 elements that can be used to demonstrate more than 17 topics.

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