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Thursday, September 13, 2007

Computational molecular modeling and simulation



Computational molecular modeling and simulation approaches have become very powerful tools that can be used to predict and investigate atomic structure, geometrical and electronic properties, binding energies, charge transfer, interactions between molecules, hydration structure, etc. The two most common models that are used in the molecular modeling and simulation are quantum mechanics and molecular mechanics. The choice of technique depends on the conditions such as desired properties of molecules, reliable results comparing with the experimental results, the length and time scales of interested systems, availability of computer resources for calculations, etc. In general, a few tens to hundreds of atoms are very accurately simulated with quantum mechanics methods, wherein the simulations are aimed toward the solution of the complex quantum many-body Schrödinger equation of the atomic system (including nuclei and electrons), using numerical algorithms. For larger size systems (hundreds of thousands of atoms), classical atomistic or molecular dynamic (MD) simulations, which refer most commonly to the situation wherein the motion of atoms or molecules is treated using approximate finite difference equations of Newtonian mechanics are used.
See Molecular Simulation Center Point (Thailand) at http://nanotech.sc.mahidol.ac.th/simulation/index.html

Sunday, September 2, 2007

Top 10 Universities or Institutions on Papers of Nano Science

1. University of California at BERKELEY, USA
2. University of Science and Technology of China, China

3. OSAKA University, Japan

4. TOHOKU University, Japan

5. GEORGIA Institute of Technology, USA

6. MIT, USA

7. BEIJING University, China

8. Centre National De La Recherche Scientifique, France

9. University of Tokyo, Japan
10. University of ILLINOIS, USA


See the more details at

Ref:>> http://www.ustc.edu.cn/en/article/0b/42fe19ba/

Monday, August 20, 2007

Top Ten of Nano Products


1. Tiny Chips Are Suddenly Hip - Apple Computer's iPod Nano Click>>





2. Fat Busting With Nanotech - Shemen Industries Canola Active Click>>





3. Tootsie Roll's Nanotech Nemesis - O'Lala Foods Choco'la Chewing Gum Click>>





4. A Nanotech Facial - Zelens Fullerene C-60 Face Cream Click>>





5. A Nano-ville Slugger- Easton Sports Stealth CNT Bat Click>>





6. Casual Apparel With Nano-Style - Nanotex Click>>






7.Stink-Proof Nano Soxs - ARC Outdoors, ArcticShield Socks Click>>




Shiny Happy Homes

8. Behr NanoGuard Paint; and
9. Pilkington Activ Glass
Click>>


10.Cleaner Air Through Science - NanoTwin Technologies, NanoBreeze Air Purifier

Click>>



Reference: Josh Wolfe, Forbes/Wolfe Nanotech Report from www.forbes.com or Click http://www.forbes.com/investmentnewsletters/2006/01/10/apple-nano-in_jw_0109soapbox.inl.html

Sunday, August 12, 2007

Scanning Probe Microscopy and Nanotechnology Revolution

The importance and timeliness of materials science and engineering in the emerging fields of nanoscience and nanotechnology, driven by the electronics and biotechnology industries cannot be overstated. There is a big gap between the scale of individual molecular structures and the sub-microscopic components on microprocessors. That gap, which spans from about one nanometer to several hundred nanometers (1-100 nm), is where fundamental properties of materials are defined. Using SPMs, scientists and engineers can presently "see" and analyze the atomic and molecular landscapes of material surfaces. SPM-based force-feedback instruments are under development to manipulate nanostructures and "feel" and move the atoms and molecules on a material surface. The evolution of nanoscience and nanotechnology, resulting in better control over the way atoms and molecules assemble into tiny structures; will make possible in the near future an unprecedented technological capability to develop novel materials and advanced materials processes at the molecular and possibly atomic scale.

Tuesday, May 1, 2007

Curriculum Vitae

Dr. Chatchawal Wongchoosuk (Boy)
ดร. ชัชวาล วงศ์ชูสุข
(PDF Version)
Address: 
Modern Nanotechnology Group, Department of Physics, Faculty of Science, Kasetsart University, Phahon Yothin Road, Bangkok 10900, THAILAND.
Website:  http://nano-ku.webs.com
Email:
boy_nanotube@yahoo.com
Tel:
+668 6706 1269

Education:

2001-2005 B.Sc. Physics (First Class Honors), Prince of Songkla University.

2005-2007 M.Sc. Physics (International Program), Mahidol University.

2007-2011 Ph.D. Physics (International Program), Mahidol University.

Visiting Scholar: Laboratory for Nanotechnology at the Institute of Microsystem Engineering (IMTEK), Albert Ludwigs University Freiburg, Germany.
 Visiting Scholar: Quantum Chemistry Group, Institute for Advanced Research and Department of Chemistry,  Graduate School of Science, Nagoya University, Nagoya, Japan

List of Publications:

Journal Publications

-2010 C. Wongchoosuk, A. Wisitsoraat, D. Phokharatkul, A. Tuantranont, and T. Kerdcharoen, Tungsten Oxide Thin Film doped with Multi-walled Carbon Nanotubes for Hydrogen Gas Sensor, Sensors 2010, Vol. 10, pp. 7705-7715.
-2010 C. Wongchoosuk, A. Wisitsoraat, A. Tuantranont, T. Kerdcharoen, "Portable Electronic Nose Based on Carbon Nanotube-SnO2 Gas Sensors and Its Application for Detection of Methanol Contamination in Whiskeys",  Sensors and Actuators B: Chemical 2010, Vol. 147, pp. 392-399.
-2009
C. Wongchoosuk, M. Lutz and T. Kerdcharoen, “Detection and classification of human body odor using an electronic nose”, Sensors, Volume 9, Issue 9, (2009), pp. 7234-7249.
-2009 C. Wongchoosuk, A. Udomvech and T. Kerdcharoen, “The geometrical and electronic structures of open-end fully functionalized single-walled carbon nanotubes”, Current Applied Physics, Volume 9, Issue 2, March 2009, pp. 352-358.
-2009
C. Wongchoosuk, S. Choopun, A. Tuantranont and T. Kerdcharoen, “Au-doped Zinc Oxide Nanostructure Sensors for Detection and Discrimination of Volatile Organic Compounds”, Materials Research Innovation, Vol. 13, No. 3, (2009), pp. 185-188
-2008
C. Wongchoosuk, S. Krongsuk and T. Kerdcharoen, "Theoretical Investigations on the Tip-Functionalized Carbon Nanotubes Interacting with Water", International Journal of Nanoparticles. Volume 1 - Issue 2 - 2008, pp 136 - 151.


International Conference Proceedings

-2010
P. Lorwongtragool, C. Wongchoosuk, T. Kerdcharoen, Portable Artificial Nose System for Assessing Air Quality in Swine Buildings, Proceedings of the 2010 Electrical Engineering/Electronics, Computer, Telecommunications, and Information Technology International Conference (ECTI-2009), 19-21 May 2009, The Empress Hotel Convention Centre, Chiang Mai, Thailand. (IEEE Explore Database), (Oral Presentation)
-2009 C. Karuwan, A. Wisitsoraat, D. Phokharatkul, T. Pogfai, C. Wongchoosuk, T. Kerdcharoen, A.Tuantranont, “Electronic Tongue: Plasma Functionalized Carbon Nanotube Electrochemical Sensor Array on PDMS/Glass Chip”, IEEE International Symposium on Biomedical Engineering (IEEE ISBME 2009) , 14-18 December 2009, A Royal Méridien Hotel, Bangkok, Thailand. (IEEE Explore Database), (Oral Presentation)
-2009 C. Wongchoosuk, A. Wisitsoraat, A. Tuantranont and T. Kerdcharoen, “Mobile Electronic Nose Based on Carbon Nanotube-SnO2 Gas Sensors: Feature Extraction Techniques and Its Application”, Proceedings of the 2009 Electrical Engineering /Electronics, Computer, Telecommunications, and Information Technology International Conference (ECTI-2009), 6-9 May 2009, Ambassador City Jomtien Pattaya, Pattaya, Thailand. (IEEE Explore Database), (Oral Presentation)
-2008 C. Wongchoosuk, M. Lutz, A. Tuantranont and T. Kerdcharoen, “James Bond Electronic Nose for Estimation of Thai Tea Aroma” International Conference on Tea Production and Tea Products, 26-28 November 2008, Mae Fah Luang University, Chiang Rai, Thailand. (Poster Presentation)
-2008 C. Wongchoosuk, T. Techalertmanee, S. Sahasithiwat, A. Tuantranont and T. Kerdcharoen, “Discrimination of Thai alcoholic beverages using carbon black-polymer composite sensor array”, The 4th International Conference on Technological Advances of Thin Films & Surface Coatings (ThinFilms 2008), 13-16 July 2008, Singpaore. (Poster Presentation)
-2008 C. Wongchoosuk, S. Choopun, A. Tuantranont and T. Kerdcharoen, “Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds”, The 2nd International Conference on Functional Materials and Devices (ICFMD 2008), 16-19 June 2008, Kuala Lumpur, Malaysia.(Poster Presentation)
-2008 C. Wongchoosuk, M. Lutz and T. Kerdcharoen, “Correction of humidity effect for detection of human body odor”, Proceedings of the 2008 Electrical Engineering/Electronics, Computer, Telecommunications, and Information Technology International Conference (ECTI-2008), 14-17 May 2008, Phuket, Thailand. (IEEE Explore Database), (Oral Presentation)
-2008 C. Wongchoosuk, M. Lutz, A. Tuantranont and T. Kerdcharoen, “Development of the Hardware and Software for Human Body Odor Discrimination”, The 5th International Joint Conference on Computer Science and Software Engineering (JCSSE-2008), 7-9 May 2008, Kanchanaburi, Thailand. (Oral Presentation)
-2007 Chatchawal Wongchoosuk, Supab Choopun, Adisorn Tuantranont, Teerakiat Kerdcharoen, “Portable electronic nose based on Au-doped ZnO nanostructure sensors for classification of Thai alcohols”, First International Workshop on Nanotechnology and Application (IWNA 2007), 15-17 November 2007, Vung Tau, Vietnam. (Oral Presentation)
-2007 C. Wongchoosuk, S. Krongsuk and T. Kerdcharoen, “First Principles and MD Simulation Study of the Interaction of Functionalized Carbon Nanotubes with Water Molecules”, Proceeding of the 7th IEEE International Conference on Nanotechnology (IEEE-NANO 2007), 2-5 August 2007, Hong Kong Convention & Exhibition Centre, Hong Kong, China. (IEEE Explore Database), (Oral Presentation)
-2007 C. Wongchoosuk, S. Krongsuk and T. Kerdcharoen, “Computational Molecular Modeling and Simulation of Functionalized Carbon Nanotubes”, Proceedings of the 2007 Electrical Engineering/Electronics, Computer, Telecommunications, and Information Technology International Conference, 9-12 May 2007, Mae Fah Luang University, Chiang Rai, Thailand. (Oral Presentation)
-2006 C. Wongchoosuk, A. Udomvech and T. Kerdcharoen, “Open-ended Functionalized Single-walled Carbon Nanotubes: A Quantum Mechanics Study of The Effects of Tubule Length and Functional Groups” the 1st International Conference on Applied Science (ICAS) in Laos (Vientiane) on Nov 5-7, 2006. (Oral Presentation)


National Conference Proceedings

-2009 C. Wongchoosuk, D. Phokharatkul, A. Wisitsoraat, A. Tuantranont and T. Kerdcharoen, “Synthesis of Vertically Aligned Open-end Carbon Nanotubes Using CVD with Water Etching Technique”, Siam Physics Congress 2009, March 19-21, 2009, Cha-am Methavalai Hotel, Phetchburi, Thailand.
-2009 W. Donkrajang, S. kladsomboon, C. Wongchoosuk and T. Kerdcharoen, “Study of Interactions between Metalloporphyrins with Various Volatile Substances Using Computational Quantum Mechanics and Molecular Dynamics simulations”, 13th Annual National Symposium for Computational Science and Engineering (ANSCSE-2009), March 25-27, 2009, Kasetsart University, Bangkok, Thailand.
-2009 P. Lorwongtragool, C. Wongchoosuk, A. Udomvech and T. Kerdcharoen, “Computational studies on the dynamics and trajectories of Li+ intercalated into single-walled carbon nanotube”, 13th Annual National Symposium for Computational Science and Engineering (ANSCSE-2009), March 25-27, 2009, Kasetsart University, Bangkok, Thailand.
-2008 Chatchawal Wongchoosuk, Supab Choopun, Adisorn Tuantranont, Teerakiat Kerdcharoen, “Application of a Portable Electronic Nose Based on Au-doped ZnO Nanostructure Sensors for Alcohols Discrimination”, The 2nd Progress in Advance Materials; Micro/Nano Materials and Applications, 16-18 January 2008, Kosa Hotel, Khon Kaen, Thailand. (Poster Presentation), (The Best Poster Award in Material Applications and Industrials Session)
-2007 Chatchawal Wongchoosuk, Mario Lutz, Adisorn Tuantranont, Teerakiat Kerdcharoen, “Possibility of Electronic Nose for Health-Care Monitoring”, Proceedings of The 1st Symposium on Thai Biomedical Engineering (ThaiBME 2007), 18-19 December 2007, Rangsit University. (Oral Presentation)
-2007 Chatchawal Wongchoosuk, Mario Lutz, Adisorn Tuantranont, and Teerakiat Kerdcharoen, “Human Body Odor Monitoring using Artificial Olfaction Devices”, German-Thai Symposium on Nanoscience and Nanotechnology, 27-28 September 2007, Chonburi, Thailand.
-2007 Taveep Thaneerananon, Chatchawal Wongchoosuk and Teerakiat Kerdchareon, “Modeling Molecular Structures and Interractions of Porphyrazine (Pz) with Various Alcohols Sensing”, Proceeding of the 33rd Congress on Science and Technology of Thailand, 18-20 October 2007, Walailak University, Nakhon Si Thammarat, Thailand. (Poster Presentation)
-2007 Nitinan Sreesarakham, Chatchawal Wongchoosuk and Teerakiat Kerdcharoen, “Application of an Electronic Nose for Classification of Thai-instant Coffees”, Proceeding of the 33rd Congress on Science and Technology of Thailand, 18-20 October 2007, Walailak University, Nakhon Si Thammarat, Thailand. (Poster Presentation)
-2007 Surinya Traipop, Chatchawal Wongchoosuk, Mario Lutz, Teerakiat Kerdcharoen, “The Classification of Thai Herbs Using Artificial Olfaction Device”, Proceeding of the 33rd Congress on Science and Technology of Thailand, 18-20 October 2007, Walailak University, Nakhon Si Thammarat, Thailand. (Oral Presentation)
-2007 Rapeephan Ngenhlor, Chatchawal Wongchoosuk and Teerakiat Kerdcharoen, "Design of Artificial Olfaction Devices for Replacing Human Nose", The 1st Thailand National Nanotechnology Conference on Nanomaterials, Pharmaceutical, Devices and Application, 14-16 August 2007, Chiang Mai, Thailand. (Poster Presentation)
- 2007 Chatchawal Wongchoosuk and Teerakiat Kerdcharoen, "Adsorption of volatile organic compounds onto carbon nanotubes and graphene sheet as studied by density functional theory", The 1st Thailand National Nanotechnology Conference on Nanomaterials, Pharmaceutical, Devices and Application, 14-16 August 2007, Chiang Mai, Thailand. (Poster Presentation), (The 2 nd Winner Poster Award)
-2007 C. Wongchoosuk, S. Krongsuk, P. Singjai and T. Kerdcharoen, “Molecular Dynamics Simulations of Functionalized Carbon Nanotube in Water”, 11th Annual National Symposium for Computational Science and Engineering, 28-30 March 2007, Prince of Songkla University, Phuket campus. (Oral Presentation)
-2006 C. Wongchoosuk, S.Unai, K. Katanyukunanon, T. Kerdcharoen, “Demonstration Apparatus of Atomic Force Microscope for Nanoscience Study” 32nd Congress on Science and Technology of Thailand, 10-12 October 2006. Bangkok (Poster Presentation)
-2006 C. Wongchoosuk, A. Udomvech and T. Kerdcharoen, “The Geometry and Electronic Structure of the Finite-Sized Functionalized Single-Walled Carbon Nanotubes”, 10th Annual National Symposium for Computational Science and Engineering, 22-24 March 2006, Chiang Mai University. (Oral Presentation)
-2005 C. Wongchoosuk, A. Udomvech, T. Kerdcharoen, “The Electronic Structure of Functionalized Single-Walled Carbon Nanotubes”, 31st Congress on Science and Technology of Thailand, 18-20 October 2005, Suranaree University of Technology, Nakhon Ratchasima. (Poster Presentation)


Patents:

C. Wongchoosuk,M. Lutz, A. Tuantranont, T. Kerdcharoen,"Electronic Nose for human identification" Submitted No. 0901001349, [Thai patents]

Research Award:

Outstanding Research Award of the TRF in 2008, “Electronic Nose for Agriculture and Food"

Research Interest:

Molecular Simulation, Computational Nanotechnology, DFTB, Functionalization of Carbon Nanotubes,Fabrication of molecular devices, Electronic Nose, Nanocircuits, Nanorobots, Nanowire

Scholarships:

- Teaching Assistant Scholarship from Deparment of Physics, Mahidol University

- Research Assistantship from Center of Nanoscience and Nanotechnology, Mahidol University

- Institutional Strengthening Program (ทุนเสริมสร้างนักวิทยาศาสตร์รุ่นใหม่) from Faculty of Science, Mahidol University

- CHE-PhD-SW Scholarship (ทุนเครือข่ายเชิงกลยุทธ์ เพื่อผลิตและพัฒนาอาจารย์ในสถาบันอุดมศึกษา หลักสูตรในและร่วมต่างประเทศ) from Commission on Higher Education

Awards and Experience (in Thai):
ระดับมัธยมศึกษา
กิจกรรมและรางวัลพิเศษ
-พ.ศ. 2543 ได้ประกาศเกียรติคุณบัตรเป็นนักเรียนที่มีความประพฤติและปฏิบัติตนเป็น แบบอย่างที่ดี ประจำปีการศึกษา 2543

หน้าที่และความสามารถพิเศษ
-พ.ศ. 2543 เป็นคณะกรรมการนักเรียนของโรงเรียนนวมินทราชูทิศ ทักษิณ
-พ.ศ. 2543 เป็นสารวัตรนักเรียนนักศึกษาวิชาทหาร
-พ.ศ. 2542-2543 เป็นนักกีฬาบาสเกตบอลของโรงเรียนนวมินทราชูทิศ ทักษิณ
- พ.ศ. 2541-2543 เป็นหัวหน้ากองร้อยนักเรียนนักศึกษาวิชาทหาร

ผลงานทางวิชาการ
- พ.ศ. 2541-2543 ได้คะแนนรวมวิชาคณิตศาสตร์สูงสุดของรุ่นติดต่อกัน 5 ภาคการศึกษา
- พ.ศ. 2543 ชนะเลิศรางวัลเกียรติบัตรเหรียญทองแดง ทักษะทางคณิตศาสตร์ ประเภทบุคคล และประเภททีม ระดับมัธยมศึกษาตอนปลาย ในจังหวัดสงขลา

ระดับอุดมศึกษา
กิจกรรมและรางวัลพิเศษ
-พ.ศ. 2546 และ 2547 เป็นคณะกรรมการจัดกิจกรรมฟิสิกส์สัญจร คือการนำความรู้วิทยาการและ Lab การทดลองทางฟิสิกส์ไปเผยแผ่ให้กับนักเรียนระดับมัธยมศึกษาตอนต้อนและตอนปลายในโรงเรียนขนาดเล็กและขนาดกลางใน จ.สงขลา
-พ.ศ. 2546 เป็นคณะกรรมการจัดค่ายอาสาพัฒนาชนบท ได้ร่วมสร้างห้องสมุดให้กับโรงเรียนวัดสะทัง จ.พัทลุง ช่วยทำให้นักเรียนและคนในชุมชนได้มีแหล่งในการศึกษาหาความรู้ อีกทั้งยังกระตุ้นให้คนในชุมชนตระหนักถึงความสำคัญของการศึกษา
-พ.ศ. 2546 เป็นประธานจัดกีฬาสัมพันธ์ วิดยา-ศึกษา-วิดยา ซึ่งเป็นกีฬาประเพณีของคณะวิทยาศาสตร์ มหาวิทยาลัยสงขลานครินทร์วิทยาเขตหาดใหญ่ คณะ ศึกษาศาสตร์มหาวิทยาลัยสงขลานครินทร์วิทยาเขตปัตตานี คณะวิทยาศาสตร์ มหาวิทยาลัยทักษิณ
-พ.ศ. 2546 ได้เกียรติบัตรเป็นผู้ที่มีผลการเรียนดี ประจำปี 2546 จากคณะวิทยาศาสตร์ มหาวิทยาลัยสงขลานครินทร์
-พ.ศ. 2546 ได้เกียรติบัตรเป็นผู้ที่ทำกิจกรรมและมีผลการเรียนดีประจำปี 2546 จาก คณะวิทยาศาสตร์ มหาวิทยาลัยสงขลานครินทร์

หน้าที่และความสามารถพิเศษ
- พ.ศ. 2547 เป็นรองประธานฝ่ายกีฬา ของชมรมกีฬาคณะวิทยาศาสตร์
- พ.ศ. 2546-2547 เป็นรองประธานผู้ดำเนินการประชุมเชียร์ ของคณะวิทยาศาสตร์
- พ.ศ. 2546 เป็นอุปนายกฝ่ายบริหารของสโมสรนักศึกษาคณะวิทยาศาสตร์
- พ.ศ. 2544-2547 เป็นประธานชั้นปีภาควิชาฟิสิกส์
- พ.ศ. 2544-2547เป็นนักกีฬาบาสเกตบอลของคณะวิทยาศาสตร์ มหาวิทยาลัยสงขลานครินทร์


Wednesday, February 28, 2007

History of Carbon Nanotube

Carbon nanotubes having nanoscale dimension (1-D) have been well-known over the past 15 years. The molecules were first discovered by Iijima in 1991 when he was studying the synthesis of fullerenes by using electric arc discharge technique. The high resolution transmission electron microscopy (HRTEM) was employed for observation of that phenomenon. Carbon nanotubes that Iijima observed were so called multi-walled carbon nanotubes (MWNTs), nested as Russian dolls, containing at least two graphitic layers, and generally have inner diameters of around 4 nm. Two years later, Iijima and Ichihashi of NEC and Bethune and colleagues of the IBM Almaden Research Center in California synthesized single-walled carbon nanotubes (SWNTs). The SWNTs were synthesized by the same route of producing MWNTs but adding some metal particles to the carbon electrodes. The appearance of SWNT is quite different to that of MWNT. The individual tubes have very small diameters (typically ~ 1nm), and are curled and looped rather than straight. In the early 1990s, two research groups predicted electronic properties of individual SWNTs. From their calculations, they found that SWNTs can be either metallic or semiconducting depending on their chirality and diameter. By the end of that decade, these particular predictions were confirmed by experiments. In the early 1990s, two research groups predicted electronic properties of individual SWNTs. From their calculations, they found that SWNTs can be either metallic or semiconducting depending on their chirality and diameter. By the end of that decade, these particular predictions were confirmed by experiments.

Left side: HRTEM images of two MWNTs and Right side: SWNTs rope: each black circle is the image of one SWNT of the rope (From Journet et al., Physique 4 (2003) 986.)

In the meantime, a lot of reviews which provide a comprehensive overview with respect to the synthesis, characterization, applications, and the basic mechanical and electronic properties of carbon nanotube have appeared. In the Next time, the structure, synthesis, properties and applications of CNTs are discussed in details. Because of many interesting properties that carbon nanotubes exhibit, CNTs have emerged to be one of the most intensively investigated nanostructure materials. The field has been developed rapidly, and a number of publications per year have been increased almost exponentially. For instances, the number of publications exceeded three thousand in the year 2003. See more detail>> http://sites.google.com/site/nanomodern/Home/CNT

Nanotechnology

Nanotechnology is one of the most important research and development frontiers in modern science. It was originally used to define any work done on the molecular scale, or one billionth of a meter (nm or 10–9 m). At nanometer length scale, the properties of a material such as its melting point, its electronic and optical properties will change. Sometime, the classical theory can not describe some phenomena of the material in atomic level. However, the change of these properties come new opportunities for technological and commercial development, and applications.



IBM logo spelled out with 35 atoms of Xenon, 1989