Ph.D. (Hyderabad Central University, India)
Assistant Professor (Research)
Dr Kiran Mangalampalli is working as a Research Assistant Professor in SRM Research Institute and associated with the Department of Physics and Nanotechnology at SRM University, since May 2016. He mainly focuses on thin films science and technology for various applications, Nanoindentation studies of advanced materials, and understanding pressure-induced phase transformations in electronic materials with the help of advanced instrumentation.
Areas of Research
Focus Area 1: Pressure is the only thermodynamic parameters that can be used alter the physical properties of materials without adding any additional atoms. At higher pressures, many materials undergo a series phase transformations to form different crystal structures. This pressure tuned behavior enables the development of advanced novel devices with multiple phenomena involving the strong coupling of the mechanical, electrical, electronic and optical properties of nanomaterials hence has significant technological value. Here, I use advanced nanoindentation equipment attached with in-situ electrical contact resistance measurement, high/low-temperature stage to apply pressure at the nanoscale and investigate the temperature dependence of phase transformation behavior of various materials and their electrical properties.
Figure: Current–depth curves from the device structure at a load of 10mN (under slow unloading conditions) at various temperatures up to 150oC. The insets show the corresponding P-h curves obtained during indentation. [Ref: Kiran et al. JAP 117, 205901 (1-9), Work done at Prof. Jodie Bradby’s Lab at Australian National University]
Focus Area 2: There are several hardening mechanisms in thin films such as grain boundary hardening, where grain boundary sliding can be effectively restricted when below 10 nm crystals are embedded in an amorphous matrix, are available. Nonetheless, when the crystallite size reduces to 1-5 nm, (where dislocation activity or crystal plasticity is absent) the understanding of the mechanism of plastic deformation, and thus the origin of high hardness is still not well understood. Therefore, I wish to develop models for understanding the plastic deformation mechanisms in ultra-thin coatings and study the nanocomposites and multilayers of various combinations of thin films to develop ‘superhard yet tough coatings’ for various applications.
Figure: Atomic force microscope images of the residual nanoindent impressions for Ti-C films containing different C concentrations. [With Raman et al., Applied Surface Science 258 (2012) 8629– 8635]. Work was done at Prof. U. Ramamrty’s lab at IISc.
Focus Area 3: Nanomaterials exhibit attractive combinations of chemical, physical, mechanical and functional properties, a result of their extraordinary surface-to-volume ratios. They are thus considered for a variety of applications. One of them is the use of nanomaterials for reinforcing metal-ceramic- and polymer matrices to enhance the mechanical properties significantly. Incorporation of graphene has been shown to improve the mechanical properties of polymer composites significantly. Our recent study shows that greatly improved mechanical properties are exhibited by the composite with the fewest number of BN layers. However, several challenges are limiting full exploitation of these composites in various applications. The main aim of this project is to develop the novel polymer nanocomposites with improved properties using advanced carbon- and BN-based nanostructures (could be 1D, 2D, and bulk). Importance will be given to the understanding of the polymer-nanofiller interactions and their control because these dynamics determine the final material properties.
Figure: (a) Variation in the average number of layers and BET surface area with urea: boric acid ratio. (b) TEM image of graphene-like BN-containing seven layers.
Figure: Variation of (a) hardness and (b) elastic modulus of BN– PMMA composites prepared with chloroform and DMF solvents as a function of the boric acid to urea ratio used for the synthesis of BN. The insets show the variations in hardness and elastic modulus as a function of a number of BN layers. [Kiran et al., Scripta Materialia 64 (2011) 592–595]. Work was done at Prof. Ramamurty’s lab at IISc.
Focus Area 4: Compared to other classes of materials such as metals, ceramics, and polymers, the structural basis for the mechanical behavior of organic crystalline solids, metal-organic frameworks (MOFs) and natural biomaterials is poorly understood. Recent advances in characterization techniques have enabled researchers to study and understand the structure-property relationships (such as mechano-luminescence etc.) in the materials mentioned above. While understanding the mechanics of organic crystals is not only necessary for Pharma industries [to avoid poor tabletability, polymorphism under pressure and chemical decomposition], but also for the fabrication of mechanical actuators, and energy harvesting, including flexible electronics, displays, etc. The understanding the biomechanics of natural materials such as proteins, cells, and soft tissues, and MOFs leads to the design of novel materials for future biomedicine, tackling the physiological and pathological processes, tissue engineering and disease detection. Therefore, I wish to carry out nanomechanics and biomechanics of various classes of soft, organic, MOF and natural materials for advanced device applications.
Figure: TCNB–pyrene complex. a) Crystal packing. b) Residual indent impression on (002). c) AFM scan image is showing layer migration upon nanoscratching. Image scan size: 25 mm. d) Schematic representation of the indenter movement and layer arrangement. [With Sunil Varughese et al., Angew. Chem. Int. Ed. 2013, 52, 2701 – 2712]. Work was done at Prof. U. Ramamurty’s lab at IISC Bangalore.
Figure: Aspirin. Crystal packing showing a representation of the slip planes in a) polymorph I and b) polymorph II. The gray slab represents the molecules that are involved in stabilizing interactions across the slip plane. C) Representative P–h curves of aspirin polymorphs. D) Optical micrograph and AFM images show domain coexistence in polymorph II crystals. [With Sunil Varughese et al., Angew. Chem. Int. Ed. 2013, 52, 2701 – 2712]. Work was done at Prof. U. Ramamurty’s lab at IISC Bangalore.
Principal Investigator (PI)
Dr. Kiran Mangalampalli
Will be updated soon
Ms. Sowjanya, M.Sc (Physics)
Will be updated soon
Total Number of Publications: 43
No. of Citations: 820
Sowjanya M and Kiran Mangalampalli*, Indentation Plasticity and Fracture Studies of Organic Crystals, Crystals 2017, 7, 324 (1-39). (I. F: 1.6) *Corresponding Author (Invited Review Article) Special issue: Crystal Indentation Hardness"
A. Jayaraman, M. S. R. N. Kiran* and U. Ramamurty, Mechanical Anisotropy in Austenitic NiMnGa Alloy: Nanoindentation Studies, Crystals, 2017, 7, 254 - 264. (I. F: 1.6) *Corresponding Author (Invited Article)
L. Q. Huston, M. S. R. N. Kiran, L. A. Smillie, J. S. Williams, and J. E. Bradby, Cold Nanoindentation of Germanium, Applied Physics Letters, 2017, 111, 021901 (1-10), . (I. F: 3.411)
P. K. Mondal, M. S. R. N. Kiran, U. Ramamurty and D. Chopra, " Quantitative investigation of the structural, thermal, and mechanical properties of polymers of a fluorinated amide", Chen. European J., 2017,
S. Seetha Lakshmi, M. S. R. N. Kiran, U. S. Hareesh, U. Ramamurty and Sunil Varughese, "Structural snapshots of metastable intermediates reveal the sequential addition of growth units in the formation of an archetypical coordination complex: Anisotropic layer migration and solid-state thermochromic transitions", Cryst. Growth Des., 2016, 16, 7271 - 7277. (I. F.: 4.425)
D. Raut, M. S. R. N. Kiran, M. K. Mishra, A. M. Asiri, and U. Ramamurty “On the loading rate sensitivity of molecular crystals.” Crystal Engineering Communication, 2016, 18, 3551 – 3556 (I.F: 3.89) (Cover Picture Article)
M. S. R. N. Kiran*, T. Tuan, L. Smillie, B. Haberl, D. Subianto, J. S. Williams and J. E. Bradby, “Temperature-dependent mechanical deformation of silicon at the nanoscale: Phase transformation versus defect propagation.” Journal of Applied Physics, 2015, 117, 205901 (1-9) (I.F:2.18) (*Corresponding author)
M. S. R. N. Kiran*, B. Haberl, J. E. Bradby, J. S. Williams ‘Temperature dependent deformation mechanisms in pure amorphous silicon.' Journal of Applied Physics, 2014, 115, Issue 12, 113511 (1-10) (I.F:2.18) (*Corresponding author)
E. C. Spencer†, M. S. R. N. Kiran†, W. Li†, U. Ramamurty, N. L. Ross, A. K. Cheetham ‘Pressure-induced bond rearrangement and reversible phase transformation in a metal-organic framework.' Angewandte Chemie International Edition, 2014, 53, 5583 – 5586 (I.F:11.70) (†Equal author contribution)
M. Huson, J. S. Church, A. Kafi, A. L. Woodhead, J. Khoo, M. S. R. N. Kiran, J. E. Bradby and B. Fox ‘Heterogeneity of Carbon Fibre’ Carbon, 2014, 68, 240-249. (I.F:6.19) (Highest downloaded (822 times in 3 months) article status by the Elsevier”)
S. Ghosh, A. Mondal, M. S. R. N. Kiran, U. Ramamurty and C. M. Reddy ‘The Role of Weak Interactions in the Phase Transition and Distinct Mechanical Behavior of Two Structurally Similar Caffeine Co-crystal Polymorphs Studied by Nanoindentation’ Crystal Growth and Design, 2013, 13, 4435-4441. (I.F:4.42)
S. C. Sahoo, S. B. Sinha, M. S. R. N. Kiran, U. Ramamurty, D. Arcan and C. M. Reddy, P. Naumov ‘Kinematic and Mechanical Profile of the Self-Actuation of Thermosalient Crystal Twins of 1,2,4,5- Tetrabromobenzene: A Molecular Crystalline Analog of a Bimetallic Strip.' Journal of American Chemical Society, 2013, 135 (37), 13843–13850. (I.F:13.03)
W. Li†, M. S. R. N. Kiran†, J. Manson, J. A. Schlueter, A. Thirumurugan, U. Ramamurty, A. K. Cheetham, ‘Mechanical properties of a metal-organic framework containing hydrogen-bonded bifluoride linker’ Chemical Communications, 2013, 49, 4471-4473. (I.F:6.56) (†Equal first author status)
T. Sabapathy, M. S. R. N. Kiran, A. Ariyaveetil, A.K. Kar, U. Ramamurty and S. Asokan ‘Nanoindentation studies on waveguides inscribed in chalcogenide glasses using ultrafast laser.' Optical Materials Express, 2013, 3, 684-690. (I.F:2.65)
K. Vasu, M. S. R. N. Kiran, M. Ghanashyam Krishna, K. A. Padmanabhan, ‘Nitrogen deficiency and metal dopant induced sub-stoichiometry in titanium nitride thin films: a comparative study.' Int. J. Materials Research, 2013/9, 879-884. (I.F:0.83)
M. S. R. N. Kiran, U. Ramamurty, A. Mishra ‘Mechanical and electrical contact resistance characteristics of the cellular assembly of carbon nanotubes.' Nanotechnology, 2013, 24, 015707(1-5). (I.F:3.57)
S. Varughese†, M. S. R. N. Kiran†, U. Ramamurty, Gautam R. Desiraju ‘Nanoindentation in Crystal Engineering: Quantifying Mechanical Properties of Molecular Crystals’ Angewandte Chemie International Edition, 2013, 52, 2701-2712. (I.F:11.70) (Invited mini-Review) (†Equal Contribution)
C. Das, M. S. R. N. Kiran, U. Ramamurty, S. Asokan ‘Manifestation of the intermediate phase in mechanical properties: Nanoindentation studies on Ge-Te-Si bulk chalcogenide glasses.' Solid State Communications, 2012, 152, 2181-2184. (I.F:1.89)
F. Jose, R. R. Seshan, S. T. Sundari, S. Dash, M. S. R. N. Kiran, A. K. Tyagi, U. Ramamurty ‘Optical and hardness of highly a-axis oriented AlN Films.' Applied Physics Letters, 2012, 101, 254102(1-3). (I.F:3.14)
G. R. Krishna, M. S. R. N. Kiran, C. L. Fraser, U. Ramamurty C. M. Reddy ‘The Relationship of Solid-State Plasticity to Mechanochromic Luminescence in Difluoroboron Avobenzone Polymorph’ Advanced Functional Materials, 2012, 23, 1422-1430. (I.F:11.8) (Cover Picture, Vol. 23, No. 11, March 20, 2013)
K. H. T. Raman, M. S. R. N. Kiran, U. Ramamurty, G. Mohan Rao, ‘Structure and mechanical properties of room temperature deposited sputtered CrN films.' Materials Research Bulletin, 2012, 47, 4463-4466. (I.F:2.43)
G. S. Varma, M. S. R. N. Kiran, V.S. Muthu, U. Ramamurty, A. K. Sood, S. Asokan ‘Thermally Reversing Window in Ge15Te85-x Inx Glasses: Nanoindentation and Micro-Raman Studies’ Journal of Non-crystalline Solids, 2012, 358, 3103-3108. (1.82)
Shiva K, M. S. R. N. Kiran, U. Ramamurty, S. Asokan and Aninda J. Bhattacharyya ‘A broad pore size distribution mesoporous SnO2 as anode for Lithium-ion batteries.' Journal of Solid State Electrochemistry, 2012, 16, 3643-3649. (I.F:2.32)
K. H. T. Raman, M. S. R. N. Kiran, U. Ramamurty and G. Mohan Rao ‘Structure and mechanical properties of Ti-C films deposited using combination of pulsed DC and normal DC magnetron co-sputtering.' Applied Surface Science, 2012, 258, 8629-8635. (I.F:3.15)
S. Varughese, M. S. R. N. Kiran, U. Ramamurty, G. R. Desiraju ‘Nanoindentation as a Probe for Mechanically Induced Molecular Migration in Layered Organic Donor- Acceptor Complexes’ Chemistry- An Asian Journal, 2012, 7, 2118-2125. (I.F:4.59)
P. V. Bharathy, Q. Yang, M. S. R. N. Kiran, J. Rha, D.Nataraj, D. Mangalaraj ‘Reactive biased target ion beam deposited W-DLC nanocomposite thin films - Microstructure and its mechanical properties.' Diamond and Related Materials, 2012, 23, 34-43. (I.F:2.12)
M. S. R. N. Kiran, S. Varughese, U. Ramamurty, and G. R. Desiraju, ‘Effect of dehydration on the mechanical properties of sodium saccharin dihydrate probed with nanoindentation.' CrystEnggComm, 2012, 14, 2489 - 2493. (I.F:3.84)
S. Varughese, M. S. R. N. Kiran, K. A. Solanko, A. D. Bond, U. Ramamurty, G. R. Desiraju Interaction anisotropy and shear instability of aspirin polymorphs established by nanoindentation Chemical Science, 2011, 2, 2236-2242. (I.F:9.11) Nature Chemistry (Highlight) 3, 835 (2011)
W. Li, P T. Barton, M. S R. N. Kiran, R. P. Burwood, U. Ramamurty, A. K. Cheetham, Magnetic and Mechanical Anisotropy in a Manganese 2- Methylsuccinate Framework Structure Chemistry- A European Journal, 2011, 17, 12429 – 12436. (I.F:5.77)
M. S. R. N. Kiran, K. Raidongia, U. Ramamurty and C. N. R. Rao, ‘Improved mechanical properties of polymer nanocomposites incorporating graphene-like BN: Dependence on the number of BN layers.' Scripta Materialia, 2011, 64, 592-595. (I.F:3.22) (Listed in TOP 25 Hottest Articles # 18)
M. S. R. N. Kiran, K.Vasu, M. G. Krishna, and K. A. Padmanabhan ‘Substrate-dependent growth and properties of nanostructured TiN films.' Solid State Communications, 2011, 151, 561-563. (I.F:1.89)
P. V. Bharathy, D. Nataraj, M. S. R. N. Kiran, Q. Yang ‘Bioactivity and nanomechanical properties of Ni/a-C: H thin films prepared by reactive biased target ion beam deposition method.' Surface and Interface Analysis, 2011, DOI: 10.1002/sia.3800 (I.F:1.39)
P. V. Bharathy, D.Nataraj, D.Mangalaraj, M. S. R. N. Kiran, J.-S.Albero, Q. Yang ‘Influence of tungsten content in W-DLC nanocomposite thin films prepared by hybrid target biased ion beam assisted deposition technique.' International J. Nanoscience, 2011, 10, 851-855.
M. S. R. N. Kiran, S. Varughese, C. Malla Reddy, U. Ramamurty, G. R. Desiraju ‘Mechanical Anisotropy in Crystalline Saccharin: Nanoindentation Studies’ Crystal Growth & Design, 2010, 10, 4650-4655. (I.F:4.42)
M. S. R. N. Kiran, S. Ksheerasagar, M. G. Krishna, and S. P. Tewari, ‘Structural, optical and nanomechanical properties of (111) oriented nanocrystalline ZnTe thin films.' The European Physical J. Applied Physics, 2010, 51, 10502-9. (I.F:0.67) (Editor’s choice paper)
P. Kumar and M. S. R. N. Kiran Nanomechanical properties of indium nano/microwires Nanoscale Research Letters, 2010, 5, 1085-1092. (I.F:2.72)
P. Kumar and M. S. R. N. Kiran, ‘Nanomechanical properties of excimer laser nanostructured silicon surfaces’ Science and Technology of Advanced Materials, 2010, 11, 025003-025010. (I.F: 3.51)
P. V. Bharathy, D. Nataraj, P. K. Chu, H. Wang, M. S. R. N. Kiran, Q. Yang, D. Mangalaraj, Y.-Y. Chang and S.-M. Yang ‘Effect of titanium incorporation on the structural, mechanical and biocompatible properties of DLC thin films prepared by reactive-biased target ion beam deposition method.' Applied Surface Science, 2010, 257, 143-150. (I.F:3.15)
M. S. R. N. Kiran, M. G. Krishna, and K. A. Padmanabhan ‘Growth, surface morphology, optical properties and electrical resistivity of ε-TiNx (0.4 < x ≤ 0.5) films.' Applied Surface Science, 2008, 255, 1934-1941. (I.F:3.15)
M. S. R. N. Kiran, M. G. Krishna, and K. A. Padmanabhan ‘Interfacial engineering of nanostructured Titanium nitride thin films.' Int. J. Nanomanufacturing, 2008, 2, 420-441.
M. S. R. N. Kiran, K. Sudheendran, M. G. Krishna, K. C. J. Raju and A. K. Bhatnagar, ‘Chromium and Nickel substituted iron oxide thin films by DC sputtering Vacuum, 2006, 81, 133-136. (I.F:1.55)
M. Huson, J. Church, A. Kafi, J. Khoo, M. S. R. N. Kiran, J. E. Bradby, B. Fox, “Physical and Chemical Heterogeneity of Carbon Fibre”, PRICM: 8 Pacific Rim International Congress on Advanced Materials and Processing, The 8th Pacific Rim International Conference on Advanced Materials and Processing, August 4-9, 2013: Waikoloa, HI DOI: 10.1002/9781118792148.ch413
K. Vasu, M. S. R. N. Kiran, M. G. Krishna, K. A. Padmanabhan, “Processing and multifunctional behavior of undoped and Nb-doped nanostructured titanium nitride thin films”, Proceedings of Advances in materials processing and characterization (AMPC-2013), 6th-8th, February 2013, Chennai, India. (Accepted)
P. V. Bharathy, D. Nataraj, Q. Yang, D. Mangalaraj and M. S. R. N. Kiran, “Preparation and nanomechanical characterization of metal-containing amorphous hydrogenated carbon nanocomposite films”, Advanced Materials Research 2010, 123-125, 431-434.
M. S. R. N. Kiran, R. Brahma and M. G. Krishna, “Nanoindentation studies on nanocrystalline indium films”. Solid State Physics (India), Vol. 53, pp.351-352, 2008.
K.Vasu, M. S. R. N. Kiran, M. G. Krishna and K. A. Padmanabhan, “Effect of substrate on the Crystallographic texture and microstructure in TiN films”. Solid State Physics (India), Vol. 53, pp.681- 682, 2008.
M. S. R. N. Kiran, G. S. Rao, M. G. Krishna and K. A. Padmanabhan, “On nanocrystalline titanium nitride thin films on 316LN nuclear grade steel substrates by RF magnetron sputtering”, Solid State Physics (India), Vol. 51, pp.509-510, 2006.
Patents: 02 (Granted)
Title: “Non-Stoichiometric Titanium nitride films” by K. A. Padmanabhan, M. G. Krishna, and M. S. R. N. Kiran
M. S. R. N. Kiran, B. Haberl, J. E. Bradby and J. S. Williams, “Nanoindentation of silicon and germanium” in the textbook of “Semiconductors and Semimetals: Defects in Semiconductors” (Elsevier)”. 2015.
Editors: Chennupati Jagadish, Privitera, Vittorio and Lucia Romano.
2016 Odd Semester [July – November]
B. Tech Nanotechnology: VII Semester
Course Name: Nanotechnology for Energy Systems
2017 Even Semester [January –May]
B. Tech Nanotechnology: II Semester
Course Name: Quantum Mechanics for Nanotechnologists
2017 Odd Semester [July – November]
B. Tech Nanotechnology: VII Semester
Course Name: Nanotechnology for Energy Systems
Interested candidates can directly contact Dr. Kiran
Interested candidates can directly contact Dr. Kiran
None at this time
Dr. Kiran Mangalampalli
DST-SERB Early Career Researcher
Research Assistant Professor
Research Institute and Department of Physics
SRM University, Kattankulathur-603203, Tamilnadu, India
Updated on 08/09/2017
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