List of publications in Refereed Journals & Patents
2009
74. S.Ayyappan, G.Panneerselvam, M.P.Antony, J. Philip “Effect of molecular nanolayers on reduction of CoFe2O4 nanoparticles under vacuum annealing: (communicated)
73.S. Ayyappan, S. Mahadevan, P. Chandramohan, M. P. Srinivasan,
John Philip* and Baldev Raj “Effect of molar ratio of Co2+ and Fe3+ ions on the size, magnetic properties and purity of CoFe2O4 spinel ferrite nanocrystals” (communicated)
72. P.D.Shima, John Philip* and Baldev Raj “Magnetically controllable nanofluid with tunable thermal conductivity and viscosity ” Applied Physics Letters 95, 133112 (2009)
71. Junaid M. Laskar, John Philip* and Baldev Raj “Experimental evidence for reversible zippering transitions in magnetic nanofluid under external magnetic field”
Phys. Review E 80 (2009) pp 041401 (1-8)
70. Jacopo Buongiorno et al. (MIT, USA Collaboration) “A Benchmark Study on the Thermal Conductivity of Nanofluids, J. Appl. Phys. 2009 (In Press)
69. P.D.Shima, John Philip* and Baldev Raj “Role of microconvection induced by Brownian motion of nanoparticles in the enhanced thermal conductivity of stable nanofluids” Applied Physics Letters 94, (2009) 223101(3 pages)
68. S.Ayyappan, John Philip & Baldev Raj “Solvent polarity effect on physical properties of CoFe2O3 nanoparticles” J. Phys. Chem. C 2009, 113 (2), 590-596.
67. S.Ayyappan, G.Gnanaprakash, G.Panneerselvam, M.P.Antony, J. Philip“Effect of surfactant monolayer on reduction of Fe3O4 nanoparticles under vacuum” J. Phys. Chem. C, 2008, 112 (47), 18376-18383
66. S.Ayyappan, J. Philip and Baldev Raj “A facile method to control the size and magnetic properties of CoFe2O4 nanoparticles” Materials Chemistry and Physics 115 (2009), pp. 712-717
65. S.Bagavathiappan, T.Saravanan, John Philip, T.Jayakumar and Baldev Raj, “Infrared thermal imaging for medical diagnosis” Medical equipments and Automation- April-June 2009 (Invited article) pp 65-67
64 S Bagavathiappan, T Saravanan, John Philip, T Jayakumar and Baldev Raj, R Karunanithi, T M R Panicker, M Paul Korath and K Jagadeesan “Infrared thermal imaging for detection of peripheral vascular disorders” Journal of Medical Physics, Vol 34, No. 1, 2009 pp43-47.
63. “Multi-NDE investigations on Zircalloy-4 rods” T.Jayakumar, S.Vaidyanathan, B.Sasi, P.Sukumar, B.P.C Rao, T.Saravanan, K.Arunmuthu, J.Philip, A.Narayana, R K Chaube and A V Ramana Rao, Journal of Non-Destructive Testing & Evaluation, Vol.7, No.2, Sep.2008.pp
62 K Arunmuthu, P Arun Kumar, T Saravanan, John Philip, T Jayakumar and Baldev Raj “Authomatic Detection and sizing of pores using Hough Transforms” (NDT &E- communicated)
61. S.Bagavathiappan, Y.Siva Sankar, M.C.Santhosh Kumar, John Philip, T.Jayakumar and Baldev Raj “Determination of Defects and Delaminations in Composite Material by Infrared Thermography Journal of Non-Destructive Testing & Evaluation, Vol.8, No.1, June 2009. pp28-36
2008
60. J.M.Laskar, J. Philip, and Baldev Raj “Light Scattering in a magnetically polarizable nanoparticle suspension” Phys.Rev E, 78, 031404 (2008)
* Figure
9a has been selected for display on the Physical Review web site as part of
"Kaleidoscope" (http://pre.aps.org). The
figure has been choosen on aesthetic
merit.
59. J. Philip, J.M.Laskar and Baldev Raj “Magnetic Field induced extinction of light in a suspension of Fe3O4 nanoparticles” Applied Physics Letters 92, 221911 (2008)
*Selected for Virtual Journal of Nanoscale Science & Technology June 23, 2008
58. J.Philip, Shima.P.D. Baldev Raj, “Evidence for enhanced thermal conduction through percolating structures in nanofluids” Nanotechnology 19 (2008) 305706
57. J.Philip, Shima.P.D. Baldev Raj, “Nanofluid with tunable thermal properties”
Applied Physics Letters 92, 043108 (2008)
*Nature Nanotechnology, Research Highlights Published online: 8 February 2008 | doi:10.1038/nnano.2008.38 “Magnetic nanofluids: Chain reaction” http://www.nature.com/nnano/reshigh/2008/0208/full/nnano.2008.38.html
*Selected for Virtual Journal of Nanoscale Science & Technology February 11, 2008
+ Appeared as editor’s choice news story in the Technology Update section of NanotechWeb, Institute of Physics in the UK (April 4, 2008) http://nanotechweb.org/cws/article/tech/33659 ) “Nanofluid could cool tiny electronic devices”
Appeared as a news story(S&T) Hindu Daily May 8, 2008 http://www.hindu.com/seta/2008/05/08/stories/2008050850101600.htm
Article “Nanofluids and their Thermal Conductivity” nOnoscience May 13, 2008
http://nonoscience.wordpress.com/2008/05/13/nanofluids-and-their-thermal-conductivity/
“Smart nanofluid for future cooling application” Institute of metals and minerals Review, No.6 June 28, pp28-31
56. T.Saravanan, S.Bagavathiappan, John Philip, T.Jayakumar and Baldev Raj
Estimation of density variation in vibrocompacted boron carbide capsule by X-ray radiography Materials Evaluation (Materials Evaluations Nov. 2008 pp 1189-1193
55. T.Saravanan, S.Bagavathiappan, John Philip, T.Jayakumar and Baldev Raj “Enhanced Sensitivity Detection Of Defects In Gas Turbine Baldes Of Aeroengine And Hairpin Tubes Of Heavy Water Plant Using Microfocal Radiography” Insight 50 No 10 October 2008
54. “K Arunmuthu, P Arun Kumar, T Saravanan, John Philip, T Jayakumar and Baldev Raj” Image processing of radiographs of Tube-to-Tubesheet weld joints for enhanced detectability of defects Insight 50 No 6 June 2008
53. S.Bagavathiappan, T.Saravanan, N.P.George, John Philip, T.Jayakumar and
Baldev Raj “Condition monitoring of exhaust system blowers using Infrared thermography” Insight 50, 9, (2008) 1-4
2007
52.J.Philip, Shima.P.D. Baldev Raj, “Experimental Evidence for enhancement of thermal conductivity under clustering” Applied Physics Letters 91, 2007, 203108
Selected for Virtual Journal of Nanoscale Science & Technology Volume 16, Issue 22 , November 26, 2007.
51. Karthekeyan, John Philip & Baldev Raj “ Thermal properties of Cu & CuO nanofluid” Materials Chemistry and Physics Vol. 109 (2008) pp 50–55
50. J. M. Laskar, S.Bagavathiappan, M. Sardar, T.Jayakumar, John Philip & Baldev Raj “Measurement of thermal diffusivity of solids using continuous heat source and infrared thermography” Materials Letters 62(2008) pp 2740–2742
49. G. Gnanaprakash, John Philip, T. Jayakumar, Baldev Raj "Effect of Digestion Time and Alkali Addition Rate on the Physical Properties of Magnetite Nanoparticles" J. Phys. Chem. B 2007, 111, 7978-7986
48. John philip, G. Gnanaprakash, G Paneerselvam, M. Antony, T Jayakumar, and Baldev Raj. “Effect of thermal annealing under vacuum on the crystal structure, size and magnetic properties of ZnFe2O4 nanoparticles” Journal of Applied Physics, 102, 054305, 2007
47. G.Gnanaprakash, John Philip & Baldev Raj “Effect of divalent metal hydroxide solubility product on the size of ferrite nanoparticles” Materials Letters 61 (2007) 4545–4548
46. G.Gnanaprakash, S.Mahadevan, T.Jayakumar, P.Kalyanasundaram, John Philip & Baldev Raj “Effect of initial pH and temperature of iron salt solutions on formation of magnetite nanoparticles during co-precipitation” Materials Chemistry and Physics 103 (2007) pp 168-175
45. S.Mahadevan, G.Gnanaprakash, J.Philip, B.P.C.Rao, T.Jayakumar “X-ray diffraction based characterization of magnetic nanoparticles in presence of goethite and correlation with magnetic properties” Physica E. 39 (2007) 20–25
44. T.Saravanan, S.Bagavathiappan, John Philip, T. Jayakumar and Baldev Raj
“Segmentation of defects from radiography images by Histogram Concavity Threshold method” Insight Vol. 49 No 10 October 2007 pp 578-584
43. S.Bagavathiappan, T.Saravanan, R. Karunanithi, Dr. T.M.R. Panicker , Dr. M. Paul Korath, Dr. K. Jagadeesan, John Philip, T.Jayakumar and Baldev Raj, “Investigation on peripheral vascular disorders using thermal imaging technique” British Journal of Diabetes & Vascular Disease- Volume 8 Issue 2 2008
*This article has been selected by Medscape a popular medical magazine published by MedEd, UK.
42. T.Saravanan, S.Bagavathiappan, John Philip, T. Jayakumar and Baldev Raj “Improved estimation of radial gap from radiography images using image processing tools” Insight Vol. 49 No 12 December 2007 pp 1-7
2006
41. G.Gnanaprakash, S.Ayyappan, T.Jayakumar, John Philip & Baldev Raj “A simple method to produce magnetic nanoparticles with enhanced alpha to gamma-Fe2O3 phase transition temperature” Nanotechnology 17 (2006) 5851-5857.
40. Baldev Raj, John Philip, K.V.Rajkumar and P.Kalyanasundaram “Effect of magnetic field on ultrasonic velocity in a magnetic nanofluid” INSA Journal Part B- Physical Sciences 72, 3, pp 145-151 (2006)
39 S.Bagavathiappan,T.Saravanan, John Philip, B.Venkataraman, T.Jayakumar, Baldev Raj “X-ray radiography for development of defect- free electrochemical hydrogen meter for sodium systems” Insight 48 (10) pp1-6 (2006)
2005
38. Bernard P. Binks, John Philip And Jhonny A. Rodrigues
“Inversion of silica-stabilized Emulsions induced by particle concentration”
Langmuir 2005 21, 3296-3302
2003
37. J. Philip, G.Prakash, T.J.Kumar, P.K.Sundaram & Baldev Raj,
“Three distict scenario under polymer-surfactant and colloid interaction”
Macromolecule 36 (2003) 9230-9236
36. J.Philip, T.J.Kumar, P.K.Sundaram , Baldev Raj
“Tunable Optical Filter” Measurement Science & Technology. 14 (2003) 1289-1294
2002
35. J.Philip, G.Prakash, T.J.Kumar, P.K.Sundaram , Baldev Raj
“Stretching and Collapse of Neutral Polymer layers under Association with Ionic Surfactants” Physical Review Letters 89 (26) 2002 268301
34. J.Philip, T.J.Kumar, P.K.Sundaram , Baldev Raj, O.M.Monval
“Effect of polymer-surfactant association on colloidal force”
Physical Review E 2002 66 011406:1-8
33.J.Philip, G.Prakash, T.J.Kumar, P.K.Sundaram, O.M.Monval & Baldev Raj, “Interaction between emulsion droplets in the presence of polymer surfactant complexes” Langmuir 2002, 18, 4625-4631.
32. O.M.Monval, P.Omerjee, J.Philip
“Water-in- oil emulsions in the presence of di-block polymers”
Recent. Research . Developments in. Macromolecules 6 (2002 ) 281-306
31. J.Philip, T.J.Kumar & B. Raj
A Laser based etching technique for metallography and ceramography" Materials Science & Engineering A338 (2002) pp 17-23
30. J.Philip, R.Kiran, T.J.Kumar, P.K.Sundaram, B.Raj
“ Recent Advances in understanding magnetic emulsion stability"
Indian Journal of Pure and Applied Physics, (2002) 40 pp 370-374
2001
29. J.Philip, J.E.Poirier, J.Bibette & F.L.Calderon
“Gelation and coarsening in dispersions of highly viscous droplets”
Langmuir, 2001, 17, 3545-3552
28. L.Bonakdar, J.Philip, Bardusco, Petkov, Potti, Meleard,. F.L.Calderon
“Rupturing of bitumen-in-water emulsions: experimental evidence for viscous sintering phenomena” Colloids and Surfaces A: Physicochemical and Engineering Aspects 176 (2001) PP 185-194
2000
27. J.Philip, L.Bonakdar, P.Poulin, J.Bibette & F.L.Calderon
“ Viscous sintering in liquid-liquid dispersions”
Physical Review Letters 84 (2000) PP 2018-2021
26. J.Philip, C.B.Rao, T.J.Kumar & B.Raj
“A new optical technique for detection of defects in ferromagnetic materials and components” NDT&E International, 33 (2000) 289-295
1999
25. J.Philip, C.B. Rao, B.Raj & T.J.Kumar
"An optical technique for the detection of surface defects in ferromagnetic samples” Measurement Science & Technology, 10 (1999) N71- 75
24. J.Philip,O.M.Monval, F.L.Calderon & J.Bibette
"Forces between colloidal droplets in the presence of a polyelectrolyte"
Bull. Materials Research 22, 2 (1999) pp100- 108.
23. J.Philip, T.J.Kumar, P.K.Sundaram & B.Raj
Laser based ultrasound technique for testing and characterization J. Pure & Applied Ultrasonics 20 (1999)
1998
22. O.M.Monval,A.Espert, P.O.Riviere, J.Bibette, F.L.Calderon, J. Philip & J.F.Joanny “Polymer induced repulsive forces: Exponential scaling.” Physical Review Letters 1998 80 1778.
1997
21. J.Philip,O.M.Monval, F.L.Calderon & J.Bibette
"Colloidal force measurements in the presence of a polyelectrolyte"
J.Phys D: Appl. Phys. 30, 20(1997) pp2798-2803.
1995
20. O.M.Monval, F.L.Calderon, J.Philip & J.Bibette,
"Depletion forces in the presence of electrostatic double layer repulsion”
Physical Review Letters 75(18) 1995, 3364-3367.
19. J.Philip, J.R.Lalanne, J.P.Marcerou & G.Siguad.
"Optical investigations in the various phases of an antiferroelectric liquid crystal"
Physical Review E. 52(2) 1995 1846-1856.
1994
18. O.M.Monval, H.J.Cole, T.Claverie, J.R.Lalanne, J.P.Marcerou & J.Philip,
"Anisotropic Raleigh scattering investigations in smA liquid crystal phases"
Journal of Chemical Physics 101(7) 1994, 6301- 6317.
17. J.Philip, J.R.Lalanne, J.P.Marcerou & G.Siguad.
"Comparison between the tilted SmCa* and SmCg* phases in MHPOBC….”
Journal de Physique II 4 1994, 2149-2159.
1993
16. J.Philip & T.A.P.Rao,
"Third order susceptibility measurements in a nematic liquid crystal- K15"
Journal of Modern Optics 40 1993, 163.
15.J.Philip & T.A.P.Rao,
"Non-resonant third order susceptibility measurements in a nematic liquid crystal- K18" Optical & Quantum Electronics 25 1993, 157.
14. J.Philip & T.A.P.Rao,
"Non-resonant third order susceptibility measurements in a nematic liquid crystal 5OCB" Jap. Journal of Applied Physics 32, 1993, 3493-3495.
1992
13. J.Philip & T.A.P.Rao,
"Kerr effect investigations in a nematic liquid crystal"
Physical Review A 46(4) 1992, 2163.
12. J.Philip & T.A.P.Rao,
"Electro-optic Kerr constant and the third order susceptibility measurements in nematic liquid.” Optical & Quantum Electronics 24 1992, 825.
11. J.Philip & T.A.P.Rao,
"Non-resonant third order susceptibility measurements in a nematic liquid crystal- PCH5"Journal of Applied Physics 72(2) 1992, 1495.
10. J.Philip & T.A.P.Rao,
"Transient Kerr effect response in nematic liquid crystal"
Journal of Physics D: Applied Physics 72(2) 1992, 1231-1234.
1991
9. J.Philip & T.A.P.Rao,
"A high voltage pulse measuring system based on Kerr effect"
Measurement Science & Technology 2 1991, 565.
8. J.Philip & T.A.P.Rao,
"Electro-optic Kerr effect studies in liquid and liquid mixtures"
Journal of Molecular Liquids 48 1991, 85-97
7. J.Philip & T.A.P.Rao,
"Kerr effect studies in acetonitrile-aromatic hydrocarbon systems"
Journal of Molecular Liquids 50 1991, 115.
6. J.Philip & T.A.P.Rao,
"Kerr effect in binary mixtures"
Journal of Molecular Liquids 50 1991, 207.
5. J.Philip & T.A.P.Rao,
"Transient birefringence in nematic liquid crystal mixtures"
Journal of Molecular Liquids 48 1991, 215.
4. John Philip et. al. “Tailoring of stable ferrofluids for various applications” IGC Highlights January (2007) pp 9-11.
3. J.Philip & Baldev Raj “An overview of recent research on magnetic nano-fluids” Frontiers in Design of Materials (Ed. Baldev Raj. University Press 2007) pp 313-327.
2. J.Philip, T.J.Kumar, P.K.Sundaram, B.Raj
Ferro-Fluid Based Devices
Institute of Engineers News letter 2 (2) August 2002 pp 1-3
1. J.Philip, P.K.Sundaram, T.J.Kumar, B.Raj
“Laser ultrasound technique for nondestructive material characterization”
Laser News, 9 (1998) 6-11
PATENTS
1. John Philip, C.Babu Rao & Baldev Raj
Patent No. 186620
An optical probe for qualitative evaluation/measurement of defects in a ferromagnetic material component case I
2. John Philip, C.Babu Rao & Baldev Raj
Patent No. 186574 An optical probe for quantitative evaluation/measurement of defects in a ferromagnetic material component Case II
3.John Philip, T.Jayakumar & Baldev Raj
Patent No. 189001 A process for producing articles of metals, alloys and ceramics with etched surfaces and an apparatus for laser based etching of the said articles
4. John Philip, T.Jayakumar , P.Kalyanasundaram & Baldev Raj
Patent No. 196063 A tunable optical Filter
5. John Philip, T.Jayakumar , P.Kalyanasundaram & Baldev Raj
Patent No. 195921 An improved apparatus for measuring colloidal forces
6. John Philip, T.Jayakumar , P.Kalyanasundaram & Baldev Raj
Patent No. 205114 Stabilized magnetic emulsion and a process of making it (1134/MUM/02 dt.19Dec02)
Popular articles & Media reports
Article based on “Nanofluid with tunable thermal properties” Applied Physics Letters 92, 043108 (2008) by J.Philip, Shima.P.D. Baldev Raj.
Based on our publication Applied Physics Letters 92, 043108 (2008)
http://nonoscience.wordpress.com/2008/05/13/nanofluids-and-their-thermal-conductivity/
Article based on “Nanofluid with tunable thermal properties” Applied Physics Letters 92, 043108 (2008) by J.Philip, Shima.P.D. Baldev Raj.
The Hindu Science & Technology, Thursday, Jul 10, 2008
Colour of milk Answer to the question : What gives milk its white colour?
http://www.hindu.com/seta/2008/07/10/stories/2008071050201800.htm
The Hindu Science & Technology December 28, 2006.
Answer to the question : “If increase of viscosity increases the stability of an emulsion, why is milk more stable and show less settling even though the viscosity is less”?
http://www.hindu.com/seta/2006/12/28/stories/2006122800541600.htm
Changing paradigms in science and technology The Hindu, February 12 , 2004
http://www.hindu.com/seta/2004/02/12/stories/2004021200041400.htm
The Hindu, March 20, 2003
http://www.hinduonnet.com/thehindu/seta/2003/03/20/stories/2003032000010200.htm
“A smart magnetic Fluid”
The Hindu, January 31, 2002. http://www.hinduonnet.com/thehindu/seta/2002/01/31/stories/2002013100050300.htm