Information about Researcher HIJAS KM
Researcher: HIJAS KM
Information
| Role | Researcher |
|---|---|
| First name | HIJAS |
| Last name | KM |
| Country | India |
| Academic title | Ph.D. |
| Organisation | National Institute of Technology Tiruchirappalli |
| Thematic area/field | ST – Physical Sciences and Engineering / ST3 Condensed matter physics |
| Key words | Crystallisation; THz spectroscopy; Polymorphism; Pharmaceuticals; |
More | |
| Short summary of activities and expertise | My Ph.D. research was focused on finding novel organic THz generators. I worked on synthesis, crystal growth and THz spectroscopic studies of organic single crystals. My proposal for POLONEZ BIS postdoc research is as follows. Polymorph control is a very important issue in pharmaceutical industry. Since different polymorphs of the same active pharmaceutical ingredient exhibit different physical properties, a method to determine symmetrical arrangement of crystallization by controlling molecular dynamics using terahertz irradiation will be a giant leap in pharmaceutical research and industry and in many other fields. This project aims to develop an experimental methodology for selective crystallization of different polymorphic forms from disordered solids using terahertz stimulation. There are many recent scientific reports which backs the idea of material manipulation using terahertz irradiation. In the reported cases of induced crystallisation in polymers using terahertz radiation, no explanation is available on the dependence of terahertz wavelength on crystallisation. Also, the mechanism of radiation-induced morphological change remains vague. In the case of crystallisation of amorphous solids using terahertz irradiation, further experiments will have to confirm whether the final crystallised state is determined by the existing near-range order, and whether selective crystallisation of preferred polymorphic forms is possible from disordered solids using terahertz irradiation. Widening similar experiments to different molecular systems to analyse the effect of change in wavelength or frequency of used terahertz radiation and analysing the results with the help of theoretical tools can unravel the mysteries. This project aims to investigate the above questions by exploring the behaviour of different polymorphic amorphous materials with terahertz irradiation. |
| Relevant publications and/or research/innovation products | 1. C. Yogeswari, K.M. Hijas, M. Abith, T.C. Sabari Girisun, R Nagalakshmi (2020) Intensity dependent two photon absorption and its saturation in 2-methyl 4-nitroaniline nanofiber. journal of materials science: materials in electronics, https://link.springer.com/article/10.1007/s10854-020-04786-6 2. HK. Mandagathingal, Shaoxian Li, V. Sivasubramani, P. Karuppasamy, Muthu Senthil Pandian, P. Ramasamy, Priyo S. Nugraha, Gyula Polónyi, József A. Fülöp, R. Nagalakshmi (2020) Characterization of aminopyridinium based organic crystals for THz generation. Journal of Optics and Laser Technology 131, 106394. https://doi.org/10.1016/j.optlastec.2020.106394 3. C. Yogeswari, KM. Hijas, TC Sabari Girisun, R. Nagalakshmi (2020) Intensity dependent nonlinear absorption switching behavior of electrospun meta-nitroaniline nanofiber. Optical Materials 100, 109691, https://doi.org/10.1016/j.optmat.2020.109691 4. KM. Hijas, S. Madan Kumar, BC. Manjunath, R. Nagalakshmi (2019) Vibrational analysis and physical property studies of 6-methoxy-2-[(e)-phenyliminomethyl]-phenol in the THz, IR and UV–visible spectral regions. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 222, 117227. https://doi.org/10.1016/j.saa.2019.117227 5. KM. Hijas, S. Madan Kumar, K. Byrappa, T. Geethakrishnan, S. Jeyaram, R. Nagalakshmi (2018) Spectroscopic investigations using density functional theory on 2-methoxy-4 (phenyliminomethyl) phenol: A nonlinear optical material. Journal of Molecular Structure 1155, 249-259. https://doi.org/10.1016/j.molstruc.2017.11.001 |
| Other relevant achievements | 1. Won Stipendium Hungaricum Fellowship in 2018 from Govt. of Hungary. 2. Spent six months in MTA-PTE High Field THz laboratory, University of Pécs, with Dr. József András Fülöp. 3. Won International travel grant from SERB, Govt. of India. |
| Preferred Host Institution type | Public, Private, Academic, Non-academic, Research centre, Enterprise, Non-governmental organisation (NGO) |
| Additional information | |
Contact | |
| hijaskmpp@gmail.com | |
| Phone number | 9605241561 |
| Website | https://scholar.google.co.in/citations?user=wGIviCEAAAAJ&hl=en |
