Materials


 

Materials

Welcome to the webpage of the Materials Group. Staff members affiliated with the Materials Group dare to dream and explore the unknown. We are actively involved in the areas of processing and characterization of conventional, biomedical and futuristic materials for a wide spectrum of engineering applications. We work closely with industry by providing consultancy and training options.

We are currently pursuing innovative processing techniques such as disintegrated melt deposition, microwave processing, crystal growth, bi-axial stretching of resorbable biomembrane, 3d scaffolds for bone tissue engineering and pulsed laser deposition along with other more conventional techniques.

These processes are applied to a range of target materials including biomaterials, energy storage materials, piezoelectric single crystals, ferroelectric and multiferroic materials, thin films and multilayer structures, tribological films, lead free solders and light weight materials such as those based on aluminum and magnesium. Our particular emphasis is on developing new materials with enhanced properties.

Characterization studies that are carried out in our laboratories relate to nanoindentation, mechanical properties at micro- to nano-scales, tensile, compressive and shear properties, electrical and electro-mechanical properties, tribological properties and microstructural and phase transformations. In addition, our laboratories are equipped with state-of-art electron microscopes, micro-CT X-ray, as well as a range of equipment capable of characterizing thermal properties, wettability, surface mechanical properties and many others.


Mimicking lotus leaf in creation of non-wettable aluminium surface

Full-Time Staff

 
Dr DUONG Hai Minh
Assistant Professor

Department of Mechanical Engineering
National University of Singapore
9 Engineering Drive 1, Block E1, #07-02
Kent vale Singapore 117575
Contact : 65161567 (O)
96699600 (Mob)
Homepage: http://www.cnt-nus.com/cnt_nus/



Qualification
Postdoc (Jan- Oct 2010) University of Cambridge, UK; Postdoc (2008-2010) MIT, USA; Postdoc (2006-2008) University of Tokyo, Japan; Postdoc (2004-2006) University of Oklahoma, USA; PhD (2000-2004) University of Melbourne, Australia

Research Interests
My research interests include a number of emerging fields such as nanomaterials and their applications, manufacturing process simulations and transport phenomena in small-scale and/or biological systems. The focus of my research is on the science and applications of carbon nanotubes (CNTs) and obtaining a fundamental understanding of heat conduction of CNT arrays and CNT-dispersed nanomaterials with industrial interest through experimental and computational studies. CNTs exhibit electrical conductivity as high as copper, thermal conductivity as high as diamond, strength 100 times greater than steel at one-sixth the weight, and high failure strain. If these characteristics can be fully utilised, the field of nanotechnology will revolutionize next-generation materials with advanced properties for a wide range of applications, such as fabricating novel chemical sensors and computers, and facilitating heat transfer in micro-channels and composite materials.

Publications
SELECTED JOURNAL PAPERS

12. K. Bui, H.M. Duong, A. Striolo, D.V. Papavassiliou, Heat Transfer Properties of Graphene Sheet Nanocomposites and Comparisons to Carbon Nanotube Composites, J. Phys. Chem. C, (2010) submitted.

11. M. Panzer, H.M. Duong, J. Okawa, J. Shiomi, B.L. Wardle, S. Maruyama and K.E. Goodson, Temperature-Dependent Phonon Conduction in Metalized Single Wall Carbon Nanotube Arrays, Nano Letters (2010), 10 (7), 2395.

10. H.M. Duong, N. Yamamoto, D.V. Papavassiliou, B.L. Wardle and S. Maruyama, Mophology Effects of Aligned Single- and Multi-Walled Carbon Nanotube Arrays on Heat Conduction of Nanocomposites, J. Phys. Chem. C, (2010), 114 (19), 8851.

9. H.M. Duong, K. Ishikawa, J. Okawa, K. Ogura, E. Einarsson, J. Shiomi and S. Maruyama, Mechanism and Optimization of Metal Deposition onto Vertically Aligned Single Walled Carbon Nanotube Arrays, J. Phys. Chem. C, (2009), 113(32), 14230.

8. H.M. Duong, D.V. Papavassiliou, K.J. Mullen, B.L. Wardle and S. Maruyama, A Numerical Study on The Effective Heat Conductivity of Single Walled Carbon Nanotubes in Biological Fluids, Int. J. Heat Mass Trans., (2009), 52, 5591.

7. H.M. Duong, N. Yamamoto, D.V. Papavassiliou, B.L. Wardle and S. Maruyama, Inter-carbon Nanotube Contact in Thermal Transport of Controlled-morphology Polymer Nanocomposites, Nanotechnology, (2009) , 20, 155702.

6. N. Yamamoto, A.J. Hart, B.L. Wardle, E.J. Garcia, S.S. Wicks, H.M. Duong, A.H. Slocum, High-yield Growth of Aligned Carbon Nanotubes on Ceramic Fibers for Multifunctional Enhancement of Structural Composites, Carbon, (2009), 47(3), 551.

5. H.M. Duong, D. V. Papavassiliou, K. J. Mullen, B.L. Wardle and S. Maruyama, Calculated Thermal Properties of Single Walled Carbon Nanotube Suspensions, J. Phys. Chem. C, (2008), 112(50), 19860.

4. H.M. Duong, E. Einarsson, J. Okawa, R. Xiang and S. Maruyama, Thermal Degradation of Vertically Aligned Single-Walled Carbon Nanotubes, Jpn. J. Appl. Phys., (2008), 47,1994.

3. H.M. Duong, D.V. Papavassiliou, K.J. Mullen and S. Maruyama, Computational modeling of thermal conductivity of single walled carbon nanotube polymer composites, Nanotechnology, (2008), 19, 065702.

2. E. Einarsson, Y. Murakami, M. Kadowaki, H.M. Duong, M. Inoue, S. Maruyama, Production and applications of vertically aligned single-walled carbon nanotubes, Therm. Sci. Eng., (2006), 14(3), 47.

1. H.M. Duong, D.V. Papavassiliou, K.J. Mullen, L.L. Lee, Random Walks in Nanotube Composites: Improved Algorithms and the Role of Thermal Boundary Resistance. Applied Physics Letters, (2005), 87(1), 013101.

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DUONG Hai Minh
Assistant Professor
65161567 (O)
96699600 (Mob)
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Dr GUPTA Manoj
Associate Professor

National University of Singapore
Dept. of Mechanical Engineering
Singapore 119260
Contact : +65-6516-6358

Journal Editorial Board: 2
Peer Reviewer: 25 International Journals

Qualification
PhD-University of California at Irvine, USA, MEng, IISc, Bangalore, India, BEng, VRCE, Nagpur, India

Modules Taught
ME2151E: Principles of Mechanical Engineering Materials (Co-lecturer); MST 5002: Materials Characterization (Co-lecturer); ME 5506: Corrosion of Materials; ME6503: Theory of Transformation in Metals (Co-lecturer)

Research Interests
a. Development of Energy Efficient Techniques such as Microwave Processing and Disintegrated Melt Deposition Processing.

b. Development of light weight materials with current focus on magnesium based nanocomposites.

c. Development of lead free solders with good strength and exceptional ductility.


Publications
International Journals: 240
Conferences: 100
Book Chapters: 3
US Patent: 2
Authored Book: Microwave and Metals; John Wiley, 2007
Edited Books: 3

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GUPTA Manoj
Associate Professor
+65-6516-6358
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Dr LIM Christina Y H
Associate Professor

Department of Mechanical Engineering
National University of Singapore
9 Engineering Drive 1
Singapore 117576
Contact : +65-6516-8082

Editorial Board member: Wear - An International Journal on the Science and Technology of Friction, Lubrication and Wear

Modules Taught
MLE1101 Introductory Materials Science and Engineering
ME2151 Principles of Mechanical Engineering Materials
ME4251 Thermal Engineering of Materials

Research Interests
Tribology (Friction and Wear of Materials)




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LIM Christina Y H
Associate Professor
+65-6516-8082
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Dr LIM Leong Chew
Associate Professor

National University of Singapore
Dept. of Mechanical Engineering
Singapore 119260
Contact : +65-6516-2247



Qualification
Ph.D. (Cornell)

Research Interests
Growth, characterisation and application of piezo





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LIM Leong Chew
Associate Professor
+65-6516-2247
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Dr LU Li
Professor

National University of Singapore
Dept. of Mechanical Engineering
9, Engineering Drive 1
Singapore 117576
Contact : 65-6516-2236
Homepage: http://serve.me.nus.edu.sg/luli

Dr. Li LU is a Professor at the Department of Mechanical Engineering of National University of Singapore. His research interests include ferroelectric, energy storage and nanostructural materials, and thin film deposition. He is Editor-in-Chief of Functional Materials Letters.

Qualification
Ph.D, K.U. Leuven, Belgium, M.Eng, Tsinghua U., China, B.Eng, Tsinghua U., China

Research Interests
Functional materials
Thin film deposition
Nanostructured materials



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LU Li
Professor
65-6516-2236
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Dr MANZHOS Sergei
Assistant Professor

Rm E2-05-04
Dept. of Mechanical Engineering
National University of Singapore
9 Engineering Drive 1
Singapore 117576
Contact : +65-6516-4605
Homepage: http://sites.google.com/site/sergeimanzhos

Dr. S. Manzhos is an Assistant Professor at the Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore. He obtained a M.Sc. from Kharkiv National University (Ukraine) in 1999 and a Ph.D. from Queen's University (Canada) in 2004, under the supervision of Hans-Peter Loock. In 2005 - 2007, he was a postdoctoral fellow at the Department of Chemistry, University of Montreal (Canada) with Tucker Carrington. In 2008 - 2010, he was Assistant Professor at the Department of Chemical System Engineering, and in 2010-2012, Assistant Professor at the Research Center for Advanced Science and Technology (RCAST), University of Tokyo (Japan). Research interests include the theory and computational modeling of processes in photoelectrochemical cells and metal ion batteries, modeling of molecule-surface reactions and vibrational spectroscopy of adsorbed species. He is a regular reviewer for various journals in the field of physical and computational chemistry and a member of the editorial board of The Scientific World Journal and Canadian Young Scientist Journal.
He is now looking for Ph.D. candidates with interests in computational modeling of mesoscopic solar cells, heterogeneous catalysis, and metal ion and metal air batteries.

Qualification
PhD (Queen's Univ); MSc, honors (Kharkiv Ntl Univ)

Research Interests
Mesoscopic solar cells, batteries, heterogeneous catalysis, ab initio modeling, molecular dynamics, computational vibrational spectroscopy

Publications
52. S. Manzhos, M. Chan, T. Carrington: Favorable dimensionality scaling of rectangular collocation with adaptable basis functions up to 7 dimensions, J. Chem. Phys., in print (2013)

51. S. Manzhos: On the choice of the discount rate and the role of financial variables and physical parameters in estimating the levelized cost of energy, International Journal of Financial Studies, 1(3), 54-61 (2013)

50. Y. W. Koh, S. Manzhos: Curvature drastically changes diffusion properties of Li and Na on graphene, MRS Commun., in print (2013)

48. T. L. Tan, O. I. Malyi, F. Legrain, S. Manzhos: Role of inter-dopant interactions on the diffusion of Li and Na atoms in bulk Si anodes, MRS Proceedings, 1541(2013), DOI: 10.1557/opl.2013.756

47. O. I. Malyi, T. L. Tan, S. Manzhos: A computational study of the insertion of Li, Na, and Mg atoms into Si(111) nanosheets, Nano Energy, in print (2013) DOI: 10.1016/j.nanoen.2013.04.007

46. S. Manzhos: Effects of nuclear vibrations on the energetics of polythiophene: quantized energy molecular dynamics, Aust. J. Chem., in print (2013)

44. M. Chan, T. Carrington, S. Manzhos: Anharmonic vibrations of the carboxyl group in acetic acid on TiO2: implications for adsorption mode assignment in dye-sensitized solar cells, Phys. Chem. Chem. Phys., 15(25), 10028-10034 (2013). Invited article for the special issue "Spectroscopy and dynamics of medium-sized molecules and clusters".

43. O. I. Malyi, T. L. Tan, S. Manzhos: In search of high performance anode materials for Mg batteries: computational studies of Mg in Ge, Si, and Sn, J. Power Sources, 33, 341-345 (2013)

42. S. Manzhos: Computational design of new organics dyes with improved solar absorbance for dye-sensitized solar cells, MRS Commun. 3(1), 37-39 (2013)

41. O. I. Malyi, T. L. Tan, S. Manzhos: A comparative computational study of structures, diffusion, and dopant interactions between Li and Na insertion into Si, Appl. Phys. Express 6(2), 027301 (2013)

40. S. Manzhos, H. Segawa, K. Yamashita: Effect of nuclear vibrations, temperature, co-adsorbed water, and dye orientation on light absorption, charge injection and recombination conditions in organic dyes on TiO2, Phys. Chem. Chem. Phys. 15(4), 1141-1147 (2013


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MANZHOS Sergei
Assistant Professor
+65-6516-4605
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Dr RAMAKRISHNA SEERAM
Professor

University Hall
National University of Singapore
Contact : 65 6516-4805

He is a Professor of Mechanical Engineering, and Bioengineering. He is a co-director of NUS Nanoscience and Nanotechnology Initiative (NUSNNI).He heads the Healthcare and Energy Materials Laboratories (HEM Lab).

Qualification
PhD (Cambridge), TGMP (Harvard)

Research Interests
Electrospinning, Nanofibers, Biomedical device, Clean Energy



Publications
1. An Introduction to Electrospinning & Nanofibers, World Scientific Press, 2006, 400 pages.
3.An Introduction to Biocomposites, Imperial College Press, UK (2004), 223 pages.

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RAMAKRISHNA SEERAM
Professor
65 6516-4805
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Dr THIAN Eng San
Assistant Professor

Department of Mechanical Engineering
National University of Singapore
9 Engineering Drive 1
Singapore 117 576
Singapore
Contact : +65-6516-5233

Dr. Thian was appointed as an Assistant Professor in the Department of Mechanical Engineering on January 2009 after a postdoctoral training in the field of biomedical materials and tissue engineering, in the Cambridge Centre for Medical Materials at the Department of Materials Science and Metallurgy, University of Cambridge since 2006.

Qualification
PhD (Cambridge), MEng BEng (NTU)

Research Interests
Nanobiomedical Materials
Tissue Engineering
Surface Engineering

Publications
E.S. Thian, Z. Ahmad, J. Huang, M.J. Edirisinghe, S.N. Jayasinghe, D.C. Ireland, R.A. Brooks, N. Rushton, W. Bonfield, S.M. Best. The role of electrosprayed apatite nanocrystals in guiding osteoblast behaviour. Biomaterials 29 (12) (2008) 1833-1843

E.S. Thian, J. Huang, Z. Ahmad, M.J. Edirisinghe, S.N. Jayasinghe, D.C. Ireland, R.A. Brooks, N. Rushton, S.M. Best, W. Bonfield. Influence of nanohydroxyapatite patterns deposited by electrohydrodynamic spraying on osteoblast response. Journal of Biomedical Materials Research Part A 85 (1) (2008) 188-194

S.M. Best, A.E. Porter, E.S. Thian, J. Huang. Bioceramics: Past, present and for the future. Journal of the European Ceramics Society 28 (7) (2008) 1319-1327

E.S. Thian, J. Huang, S.M. Best, Z.H. Barber, W. Bonfield. Silicon-substituted hydroxyapatite: The next generation of bioactive coatings. Materials Science and Engineering C 27 (2) (2007) 251-256

E.S. Thian, J. Huang, S.M. Best, Z.H. Barber, R.A. Brooks, N. Rushton, W. Bonfield. The response of osteoblasts to nanocrystalline silicon-substituted hydroxyapatite thin films. Biomaterials 27 (13) (2006) 2692-2698

E.S. Thian, J. huang, S.M. Best, Z.H. Barber, W. Bonfield. Novel silicon-doped hydroxyapatite (Si-HA) for biomedical coatings: An in vitro study using acellular simulated body fluid. Journal of Biomedical Materials Research Part B: Applied Biomaterials 76 (2) (2006) 326-333

E.S. Thian, J. Huang, S.M. Best, Z.H. Barber, W. Bonfield. Magnetron co-sputtered silicon-containing hydroxyapatite thin films - An in vitro study. Biomaterials 26 (16) (2005) 2947-2956

E.S. Thian, J. Huang, S.M. Best, Z.H. Barber, W. Bonfield. A new way of incorporating silicon in hydroxyapatite (Si-HA) as thin films. Journal of Materials Science: Materials in Medicine 16 (5) (2005) 411-415

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THIAN Eng San
Assistant Professor
+65-6516-5233
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Dr ZENG Kaiyang
Associate Professor

National University of Singapore
Dept. of Mechanical Engineering
9 Engineering Drive 1
Singapore 117576
Contact : +65-6516-6627

Dr.Zeng obtained his Ph.D in Materials Science from Royal Institute of Technology (KTH), Sweden. he was Research Scientist/Senior Research Scientist at Institute of Materials Research and Engineering (IMRE), Singapore, during 1998 - 2004. He joined Department of Mechanical Engineering, National University of Singapore, in August 2004. His main research activities are Biomimetics materials research; In-situ characterization of Li-ion batteries; Multiferroics and ferroelectric materials.

Research ID Profile:

Qualification
B.Eng., Hunan Univ., P.R.China, Ph.D., KTH, Sweden

Modules Taught
ME4255: Materials Failure; ME5513: Fracture and Fatigue of Materials; ME2151E: Fundamentals of Materials Engineering; ME6505: Contact Mechanics and Applications; ME6501 and ME6502: Research Topics in Materials Engineering.

Research Interests
Biomimetic studies of natural materials (bone, seashells);
Coupled mechanical/electrical/magnetic properties of ferroelectric, piezoelectric and multiferroics materials;
Characterization of materials by Scanning Probe Microscopy (SPM) techniques;
Interfacial mechanics;
Mechanical properties of thin films;
Analysis of nanoindentation experiments;
Mechanical propeties of piezoelectric materials.

For more detail, please visit my group website at http://sites.google.com/site/zengsresearhgroup/



Publications
More than 100 publications in the peer-reviewed international journals, books and conferences, with more than 1600 total citations (ISI Web of Science), and h-index of 23. Here are some publications:

International Journal Publications:

1) T.S.Herng, M.F.Wong, D.Qi, J.Yi, A.Kumar, A.Huang, F.C.Kartawidjaja, S.Smadici, P.Abbamonte, C.S-Hanke, S.Shannigrahi, J.M.Xue, J.Wang, Y.P.Feng, A.Rusydi, K.Y.Zeng, and J.Ding, Mutual Ferromagnetic-Ferroelectric Coupling in Multiferroic Copper-doped ZnO, Advanced Materials, (2011).
2) J.Zhu, K.B.Yeap, K.Y.Zeng, L.Lu, Nanomechanical Characterization of Sputtered RuO2 ThinFilm on Silicon Substrate for Solid State Electronic Devices, Thin Solid Film, 519, 1914-1922, (2011).
3) M.F.Wong, T.S.Herng, Z.Zhang, K.Y.Zeng, and J.Ding, Stable Bipolar Surface Potential Behavior of Copper-Doped Zinc Oxide Films studied by Kelvin probe Force Microscopy, Applied Physics Letters, 97, 232103, (2010).
4) M.F.Wong and K.Y.Zeng, Mechanical Polishing Effects toward Surface Domain Evolution in Pb(Zn1/3NB2/3)O3-PbTiO3 Single Crystals, Journal of the American Ceramic Society, (2011).
5) M.F.Wong and K.Y.Zeng, Nanoscale Domains and Prefered Cracking Planes in Pb(Zn1/3Nb2/3)O3-(6-7)%PbTiO3 Single Crystals studied by Piezoresponse Force Microscopy and Fractorgraphy, Journal of Applied Physics, 107, 124104, 2010.
6) M.F.Wong and K.Y.Zeng, Elastic-plastic Deformation of Pb(Zn1/3Nb2/3)O3-(6-7)%PbTiO3 Single Crystals during Nanoindentation, Philosophical Magazine, 90, 1685-1700, (2010).
7) L.Chen, G.R.Liu, N.Nourbakhsh-Nia, K.Y.Zeng, A Singular Edge-based Smoothed Finite Element Method (ES-FEM) for Bimaterial Interface Cracks, Computational Mechanics, 45, 109-125, (2010).
8) S.Lim, K.Y.Zeng, C.B.He, Morphology, Tensile and Fracture Characteristics of Epoxy-Alumina Nanocomposites, Materials Science and Engineering A, 527, 5670-5676, (2010).
9) B.S.S.Chandra Rao, J.Weng, L.Shen, T.K.Lee and K.Y.Zeng, Morphology and Mechanical Properties of Intermetallic Compounds in SnAgCu Solder Joints, Microelectronic Engineering, 87, 2416-2422, (2010).
10) G.R.liu, L.Chen, T.Nguyen-Thoi, K.Y.Zeng and G.Y.Zhang, A Novel Singular Node-based Smoothed Finite Element Method (NS-FEM) for upeer bound Solutions of Fracture Problems, International Journal for Numerical Methods in Engineering, 83, 1466-1497, (2010).
11) B.S.S.Chandra Rao, K.Mohan Kumar, V.Kripesh and K.Y.Zeng, Tensile Deformation Behavior of Nano-sized Mo Particles Reinforced SnAgCu Solders. Materials Science and Engineering A, (2011)


Book Chpaters:
1) K.Zeng, Nanoindentation: Recent Development and Applications, Chapter 7, Handbook of Theoretical and Computational Nanotechnology (10-volume set), Eds.M.Rieth and W.Schommers, American Scientific Publisgers, 2006, Vol.4, 387-461.
2) K.Zeng, Nanoindentation of Thin Films and its Application, Chapter 55, Handbook of Nanoceramics and their Nased Nanodevices (5-volume set), Eds. T.Y.Tseng and H.S.Nalwa, American Scientific Publications, Jan. 2009.
3) K.Zeng, Nanoindentation and Indentation Creep of Polymeric Materials, Chapter 5, Polymer Tribology, Eds. S.K.Sinha and B.J.Briscoe, Imperial College Press, 2009, 141-194.
4) K.Zeng, K.B.Yeap, A.Kumar, L.Chen and H.Jiang, Fracture Toughness and Interfacial Adhesion Strength of Thin Films: indentationand Scratch Experiments and Analysis, Chpater 3, Handbook of Nanostructured Thin Films and Coatings (3-volume set) Eds. S.Zhang, CRC Press, 2010, 67-98.









Currently supervising or co-supervising 5 Ph.D students
Graduated students: 4 Ph.D (graduated), 2 Ph.D (thesis submitted), 6 M.Sc, 4 M.Eng., 43 B.Eng., 2 B.Tech.
Singapore Science and Engineering Fair (SSEF 2010), SRP 2009 Project "Nanoscale Structural Images of Advanced Materials by using Piezoresponse Force Microscopy Technique" (JC 1), Merit Award.
Singapore Science and Engineering Fair (SSEF 2010), SMP 2009 Project "Study of Deformation Mechanisms of Amorphous Alloys" (Sec 4), Merit Award.






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ZENG Kaiyang
Associate Professor
+65-6516-6627
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Professorial/Associate Professorial Fellows

 
Dr LAI Man On
Associate Professorial Fellow

National University of Singapore
Dept. of Mechanical Engineering
Singapore 119260
Contact : +65-6516 2577

MEng/PhD Program Manager


Qualification
BE, PhD Auckland, New Zealand

Research Interests
Fracture and fatigue; metal matrix composites



Publications
Publications (as at September 2005):

* 2 books
* 155 international refereed journal papers
* 87 conference papers
* 1 editorial work on books
* 1 editorial work on journals

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LAI Man On
Associate Professorial Fellow
+65-6516 2577
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