Our research is based on the chemistry and physics of semiconductor nanocrystals in the quantum size regime and supramolecular assemblies of organic compaunds. We are carrying out research in the inter-disciplinary areas probing structure-property relationship and possible applications in the areas of energy harvesting and energy generation .
| 2017- Till date: | Professor, School of Applied & Interdisciplinary Sciences (SAIS), Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, INDIA |
| 2014-2017 | Associate Professor, Centre for Advanced Materials (CAM), Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, INDIA |
| 2010-2014 |
Assistant Professor, Centre for Advanced Materials (CAM), Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, INDIA
|
| 2008-2010 | Scientist (equivalent to Assistant Professor), Centre for Advanced Materials (CAM), Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032 INDIA |
| 2006-2008 |
ICYS Fellow, ICYS-MANA Researcher, International Center for Young Scientists, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan |
| 2003-2006 | Post Doctoral Fellow, Department of Chemistry and Department of Materials Engineering, Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel |
Synthesis of size and shape controlled nanomaterials
A variety of discoveries based on the bulk materials have largely contributed towards realizing the modern comfort of mankind. However, today’s increasing demand in achieving devices in extremely small scale suggests the need of developing functional nanomaterials. Nanomaterials possessing fascinating properties in contrary to their bulk counterparts showed prospects in potential device fabrication. Motivated by the concept of miniaturization, we have been developing functional nanomaterials with controlled size and shape in the strong confinement regime. Our effort includes the synthesis of quantum dots, nanorods, nanowires and nanosheets consisting of feature material combinations. A few examples of nanomaterials developed from our laboratory are displayed underneath.
Supramolecular assemblies at air-water interface
The fabrication of highly ordered architectures composed of AIEgens or molecular donor–acceptor pairs using a supramolecular approach is a subject of importance for organic electronics. Increasing the width of the photoactive region by forming wide area heterojunctions consisting of precisely ordered donor-acceptor components is our motivation targeting towards improving photocarrier generation. On the other hand, aggregation-induced emission (AIE) shows prospects towards light generation in solid state. However, AIE effect is commonly observed in irregular bulk form. We design controlled supramolecular aggregation of AIEgens at the molecular level using Langmuir Blodgett technique. As a consequence, a large enhancement of luminescence comparable to the bulk form can be realized. We utilize this unique feature for the fabrication of light emitting diodes with low threshold voltage.
We treat the as-synthesized nanomaterials at the air-water interface similar to the molecular assemblies. A coalescence reaction of the nanorods to nanowires by applying 2D surface pressure at the air-water interface was proposed by us. Such reactions can bring down the bulk reaction temperature to ambient conditions. We have developed high quality ultra-thin 2D single-crystalline sheets of various semiconductors with well-defined morphology via collective coalescence mechanism. Importantly, the ultra-thin sheets consist of finite band-gap, which offers device fabrication opportunities.
Nano-scale junctions with controlled interfaces
Today’s electronics is based on the function of the junctions. Our aim is to develop nano-scale junctions (heterostructures and superlattices) with controlled interfaces consisting of semiconductor nanomaterials with different band-gaps. When such a junction forms in the nsnoscale, there will be selective off-sets in the conduction and valance bands (levels) that separate the charge carriers across the interface or allow recombination in a selective way. The process is called “band-offset” engineering using “band-edge” engineering. These materials are advantageous in realizing multiple functional optoelectronic devices. We are developing such nanoscale junctions using colloidal synthesis rotes in the form of coupled quantum dots or superlattices aiming towards device fabrication, while probing the nature of the junction locally.
Devices
We fabricate devices exploring unique properties of nanomaterials or molecules and study the underlying device physics. We also explore the materials properties at the single nanomaterial level by using UHV-SPM technique. Various functional nanomaterials/molecules are being used with controlled device architecture for photovoltaic, LEDs and electro-optic applications. We are using individual and/or assembled nanorods/nanowires and sheets for transport and tunneling based devices. Designing triboelectric generator using different materials combination to generate easy electricity is another motivation of our group.
1) Supramolecular Nanofabrications with Inorganic Building Blocks; Macromolecules Containing Metal and Metal-Like Elements Volume 9 (Book Chapter)
KatuhikoAriga, Jonathan P. Hill, AjayanVinu, Pavuluri Srinivas, Somobrata Acharya and Qingmin Ji
Publisher: John Wiley & Sons, Inc., Hoboken, Volume 9, 1-33 (2009)
2) Amit Dalui, Ali Hossain Khan, Bapi Pradhan, Srabanti Ghosh and Somobrata Acharya
Materials Nanoarchitectonics
Aspects of One-dimensional Nanostructures: Synthesis, Characterization and Applications
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (Book Chapter, 2017)
JOURNALS
Journal of Solid State Chemistry 282, 121122-121129 (2020)
(Invited Article)
107) Vortex-Aligned Ordered Film of Crystalline Fullerene C70 Microtubes with Enhanced Photoluminescence and Photovoltaics Properties
Partha Bairi*, Gundam Sandeep Kumar, Somobrata Acharya, Subrata Maji, Katsuhiko Ariga, and Lok Kumar Shrestha*
Journal of Nanoscience and Nanotechnology 20 (5), 2971-2978 (2020)
(Special issue on Materials Innovation with Nanoarchitectonics)
106) Unveiling Peritoneum Membrane for a Robust Triboelectric Nanogenerator
Tapas Kamilya, Piyush Sarkar and Somobrata Acharya*
ACS Omega 4 (18), 17684-17690 (2019)
105) Introduction of Triboelectric Positive Bioplastic for Powering Portable Electronics and Self-powered Gait Sensor
Piyush Kanti Sarkar, Tapas Kamilya and Somobrata Acharya*
ACS Applied Energy Materials 2 (8), 5507-5514 (2019)
104) Post-Synthesis Spontaneous Coalescence of Mixed Halide Perovskite Nanocubes into Phase Stable Single-Crystalline Uniform Luminescent Nanowires
Bapi Pradhan, Aamir Mushtaq, Dipanwita Roy, Sumanta Sain, Bidisa Das, Uttam Kumar Ghorai, Suman Kalyan Pal, and Somobrata Acharya*
J. Phys. Chem. Lett., (DOI: 10.1021/acs.jpclett.9b00832)
Jayita Pradhan, , Parikshit Moitra, Umesh, Bidisa Das, Pramita Mondal, Gundam Sandeep Kumar, Uttam Ghorai, Somobrata Acharya* and Santanu Bhattacharya*
Chemistry of Materials (2020, Accepted)
112) Transparent, flexible MAPbI3 perovskite microwire array passivated with ultra-hydrophobic supramolecular assembly for stable and high-performance photodetectors
K.D.M. Rao*, Mozakkar Hossain, Umesh, Aniket Roy, Anudeepa Ghosh, Gundam Sandeep Kumar, Parikshit Moitra, Tapas Kamilya, Somobrata Acharya* and Santanu Bhattacharya*
Nanoscale (2020, Accepted)
111) Large-area Transparent Flexible Guanidinium Incorporated MAPbI3 Microstructures for High-performance Photodetectors with Enhanced Stability
Gundam Sandeep Kumar, Piyush Kanti Sarkar, Bapi Pradhan, Mozakkar Hossain, K. D. M. Rao* and Somobrata Acharya*
Nanoscale Horizons (DOI: 10.1039/c9nh00774a)
110) Light-Induced Defect Healing and Strong Many-Body Interactions in Formamidinium Lead Bromide Perovskite Nanocrystals
Supriya Ghosh, Qi Shi, Bapi Pradhan, Aamir Mushtaq, Somobrata Acharya, Khadga J. Karki, Tõnu Pullerits* and Suman Kalyan Pal*
J. Phys. Chem. Lett. 11, 1239−1246 (2020)
109) Solution Phase Synthesis of Large-area Ultra-thin Two Dimensional Layered Bi2Se3: Role of Cu-Intercalation and Substitution
Bapi Pradhan, Amit Dalui*, Susmita Paul, Dipanwita Roy and Somobrata Acharya*
Materials Research Express 6 (12), 124005 (2020)
(Special issue : Focus on Materials Research in India)
108) Aggregation induction of tetraphenylethylene AIEgen and its supramolecular aggregates toward light-emitting diodes
Mondal Pramita, Biswas Sandip, Debabrata Jana, Das Bidisa, Uttam K Ghorai, Binay K Ghorai, Somobrata Acharya*
Ali Hossain Khan, Somnath Pal, Amit Dalui, Bapi Pradhan, D. D. Sarma and Somobrata Acharya*
Journal of Materials Chemistry A (DOI: 10.1039/C9TA00370C)
102) Realization of Diverse Waveform Converter from a Single Nano-scale Lateral pn Junction Cu2S-CdS Heterostructure
Amit Dalui, Mrityunjay Pandey, Piyush Kanti Sarkar, Bapi Pradhan, Aastha Vasdev, Nabin Baran Manik, Goutam Sheet* and Somobrata Acharya*
ACS Appl. Mater. Interfaces 11 (12), 11749–11754 (2019)
101) Unidirectional Branching Growth of Dipeptide Single Crystals for Remote Light
Qi Li, Yi Jia* , Xiaoke Yang, Luru Dai, Bidisa Das , Somobrata Acharya* , Bingbing Sun, Yang Yang‡, Xingcen Liu, Katsuhiko Ariga* and Junbai Li*
Multiplication and Collection
ACS Appl. Mater. Interfaces 11 (1), 31–36 (2019)
100) Synthesis of High Molecular Weight 1,4-Polynaphthalene for Solution-Processed True Color Blue Light Emitting Diode
Suman Kalyan Samanta, Gundam Sandeep Kumar, Uttam Kumar Ghorai, Ullrich Scherf, Somobrata Acharya* and Santanu Bhattacharya*
Macromolecules 51 (20), 8324–8329 (2018)
099) Phonon Coupling with Excitons and Free Carriers in Formadinium Lead Bromide Perovskite Nano-Crystals.
Supriya Ghosh, Qi Shi, Bapi Pradhan, Pushpendra Kumar, Zhengjun Wang, Somobrata Acharya, Suman Pal*, ToÞnu Pullerits, Khadga Karki*.
The Journal of Physical Chemistry Letters 9, 4245-4250 (2018)
098) Hierarchical Heterostructure of Ag-Nanoparticle Decorated Fullerene Nanorods (Ag-FNRs) as an Effective Single Particle Freestanding SERS Substrate.
Gundam Sandeep Kumar, Rekha Goswami Shrestha, Qingmin Ji, Jonathan P. Hill, Katsuhiko Ariga, Somobrata Acharya* and Lok Kumar Shrestha*.
Phys. Chem. Chem. Phys. (DOI:10.1039/C8CP02779J)
097) Carbon Nanosheets by Morphology-Retained Carbonization of Two-Dimensional Assembled Anisotropic Carbon Nanorings.
Taizo Mori, Hiroyuki Tanaka, Amit Dalui, Nobuhiko Mitoma, Kengo Suzuki, Mutsuyoshi Matsumoto, Nikhil Aggarwal, Archita Patnaik, Somobrata Acharya, Lok Kumar Shrestha, Hirotoshi Sakamoto, Kenichiro Itami* and Katsuhiko Ariga*.
Angewandte Chemie International Edition (DOI: 10.1002/anie.201803859)
Mozakkar Hossain, Gundam Sandeep Kumar, S. N. Barimar Prabhava, Emmet D. Sheerin, David McCloskey, Somobrata Acharya, K. D. M. Rao* and John J. Boland.
ACS Nano 12, 4727-4735 (2018)
095) Probing Local Electronic Structures of Au-PbS Metal-Semiconductor Nanodumbbells.
Anupam Debangshi, Umamahesh Thupakula, Ali Hossain Khan, Gundam Sandeep Kumar, Piyush Kanti Sarkar and Somobrata Acharya*.
ACS Appl. Nano Mater. 1, 2104-2111 (2018)
094) Supramolecular Aggregates of Tetraphenylethene Cored AIEgen towards Mechanoluminescent and Electroluminescent Devices.
Sandip Biswas, Debabrata Jana, Gundam Sandeep Kumar, Subrata Maji, Pronab Kundu, Uttam K. Ghorai, Rajendra P. Giri, Bidisa Das, Nitin Chattopadhyay, Binay K. Ghorai and Somobrata Acharya*.
ACS Appl. Mater. Interfaces 10, 17409-17418 (2018)
093) Enhancing Performances of Hybrid Perovskite Light Emitting Diodes with Thickness Controlled PMMA Interlayer.
Gundam Sandeep Kumar, Bapi Pradhan, Tapas Kamilya and Somobrata Acharya*.
Bulletin of the Chemical Society of Japan (doi:10.1246/bcsj.20180102)
092) Size Tunable Cesium Antimony Chloride Perovskite Nanowires and Nanorods.
Bapi Pradhan, Gundam Sandeep Kumar, Sumanta Sain, Amit Dalui, Uttam Ghorai, Swapan Pradhan and Somobrata Acharya*.
Chem. Mater. 30, 2135-2142 (2018)
091) Mesoporous fullerene C70 cubes with highly crystalline frameworks and unusually enhanced photoluminescence properties.
Partha Bairi, Tohru Tsuruoka*, Somobrata Acharya, Qingmin Ji, Jonathan P. Hill, Katsuhiko Ariga, Yusuke Yamauchi* and Lok Kumar Shrestha*.
Mater. Horiz. 5, 285-290 (2018)
Piyush Kanti Sarkar, Subrata Maji and Somobrata Acharya*.
Journal of Nanoscience and Nanotechnology 18, 1741-1746 (2018)
089) Two-Dimensional Hybrid Organohalide Perovskites from Ultrathin PbS Nanocrystals as Template.
Jayita Pradhan, Soham Mukherjee, Ali Hossain Khan, Amit Dalui, Biswarup Satpati, Carlo U. Segre, D. D. Sarma and Somobrata Acharya*.
J. Phys. Chem. C 121, 6401-6408 (2017)
088) Solution-Processed Free-Standing Ultrathin Two-Dimensional PbS Nanocrystals with Efficient and Highly Stable Dielectric Properties.
Ali Hossain Khan, Somnath Pal, Amit Dalui, Jayita Pradhan, D. D. Sarma and Somobrata Acharya*.
Chem. Mater., 29, 1175-1182 (2017)
087) Two-Dimensional (2D) Nanomaterials towards Electrochemical Nanoarchitectonics in Energy-Related Applications.
Ali Hossain Khan, Srabanti Ghosh, Bapi Pradhan, Amit Dalui, Lok Kumar Shrestha*, Somobrata Acharya* and Katsuhiko Ariga*.
Bull. Chem. Soc. Jpn. 90 , 627-648 (2017)
086) Induced aggregation of AIE - Active Mono-Cyclometalated Ir(III) Complex into Supramolecular Branched Wires for Light-Emitting Diodes.
Subrata Maji, Parvej Alam, Gundam Sandeep Kumar, Sandip Biswas, Piyush Kanti Sarkar, Bidisa Das, Ishita Rehman, Benu Brata Das, Nikhil Ranjan Jana, Inamur Rahaman Laskar and Somobrata Acharya*.
Small 11, 1603780-1603787 (2017)
085) Chemical Tailoring of Band Offsets at the Interface of ZnSe?CdS Heterostructures for Delocalized Photoexcited Charge Carriers.
Amit Dalui, Arup Chakraborty, Umamahesh Thupakula, Ali Hossain Khan, Sucheta Sengupta, Biswarup Satpati, D. D. Sarma, Indra Dasgupta and Somobrata Acharya*.
J. Phys. Chem. C 120, 10118-10128 (2016)
084) Shape-controlled cobalt phosphide nanoparticles as volatile organic solvent sensor.
Bapi Pradhan, Gundam Sandeep Kumar, Amit Dalui, Ali Hossain Khan, Biswarup Satpati, Qingmin Ji, Lok Kumar Shrestha, Katsuhiko Ariga and Somobrata Acharya *.
J. Mater. Chem. C 4, 4967-4977 (2016)
Arindam Malakar, Bidisa Das, Samirul Islam, Carlo Meneghini, Giovanni De Giudici, Marco Merlini, Yury Kolenko, Antonella Iadecola, Giuliana Aquilanti, Somobrata Acharya, and Sugata Ray*.
Scientific Reports 6, article number : 26031 (2016)
082) Biological activity of dendrimer-methylglyoxal complexes for improved therapeutic efficacy against malignant cells.
Srabanti Ghosh*, Prabal Chakraborty, Adrita Chakrabarti, Manosij Ghosh, Amit Mandal, Partha Saha, Anita Mukherjee, Somobrata Acharya and Manju Ray.
RSC Advances 6, 6631-6642 (2016)
081) Triboelectric Generator Composed of Bulk Poly(vinylidene fluoride) and Polyethylene Polymers for Mechanical Energy Conversion.
Piyush Kanti Sarkar, Subrata Maji, Gundam Sandeep Kumar, Krushna Chandra Sahoo, Dipankar Mandal and Somobrata Acharya*.
RSC Advances 6, 910-917 (2016)
080) Facile synthesis of composition and morphology modulated quaternary CuZnFeS colloidal nanocrystals for photovoltaic application.
Amit Dalui, Ali Hossain Khan, Bapi Pradhan, Jayita Pradhan, Biswarup Satpati and Somobrata Acharya*.
RSC Advances 5, 97485-97494 (2015)
079) Vortex-Aligned Fullerene Nanowhiskers as a Scaffold for Orienting Cell Growth.
Venkata Krishnan, Yuki Kasuya, Qingmin Ji, Marappan Sathish, Lok Kumar Shrestha*, Shinsuke Ishihara, Kosuke Minami, Hiromi Morita, Tomohiko Yamazaki, Nobutaka Hanagata, Kun�ichi Miyazawa, Somobrata Acharya, Waka Nakanishi, Jonathan P Hill and Katsuhiko Ariga.
ACS applied materials & interfaces 7, 15667-15673 (2015)
078) Insight mechanism revealing the peroxidase mimetic catalytic activity of quaternary CuZnFeS nanocrystals: colorimetric biosensing of hydrogen peroxide and glucose.
Amit Dalui, Bapi Pradhan, Umamahesh Thupakula, Ali Hossain Khan, Gundam Sandeep Kumar, Tanmay Ghosh, Biswarup Satpati and Somobrata Acharya*.
Nanoscale 7, 9062-9074 (2015)
077) Easy extraction of water-soluble graphene quantum dots for light emitting diodes.
Gundam Sandeep Kumar, Umamahesh Thupakula, Piyush Kanti Sarkar and Somobrata Acharya*.
RSC Advances 5, 27711-27716 (2015)
Subrata Maji, Piyush Kanti Sarkar, Leena Aggarwal, Sujoy Kumar Ghosh, Dipankar Mandal*, Goutam Sheet* and Somobrata Acharya*.
Physical Chemistry Chemical Physics 17, 8159-8165 (2015)
075) Efficient Solid-State Light-Emitting CuCdS Nanocrystals Synthesized in Air.
Ali Hossain Khan, Amit Dalui, Soham Mukherjee, Carlo U. Segre, D. D. Sarma, and Somobrata Acharya*.
Angewandte Chemie International Edition 54, 2643-2648 (2015)
074) Mechanism of Versatile Catalytic Activities of Quaternary CuZnFeS Nanocrystals Designed by a Rapid Synthesis Route.
Amit Dalui, Umamahesh Thupakula, Ali Hossain Khan, Tanmay Ghosh, Biswarup Satpati and Somobrata Acharya*.
Small 11, 1829-1839 (2015)
073) Micrometer long oriented one-dimensional wires and two-dimensional sheets from a bis-urea functionalized dialkoxynaphthalene organogelator.
Subrata Maji, Anindita Das, Piyush Kanti Sarkar, Amaresh Metya, Suhrit Ghosh* and Somobrata Acharya*.
RSC Advances 4, 44650-44653 (2014)
072) Demonstration of Ultrarapid Interfacial Formation of 1D Fullerene Nanorods with Photovoltaic Properties.
Rekha Goswami Shrestha, Lok Kumar Shrestha*, Ali Hossain Khan, Gundam Sandeep Kumar, Somobrata Acharya* and Katsuhiko Ariga.
ACS Applied Materials & Interfaces 6, 15597-15603 (2014)
071) First-principles study of the electronic structure of CdS/ZnSe coupled quantum dots.
Nirmal Ganguli, Somobrata Acharya and Indra Dasgupta.
Physical Review B 89, 245423 (2014)
Keita Sakakibara, Parayalil Chithra, Bidisa Das, Taizo Mori, Misaho Akada, Jan Labuta, Tohru Tsuruoka*, Subrata Maji, Seiichi Furumi, Lok Kumar Shrestha, Jonathan P. Hill, Somobrata Acharya*, Katsuhiko Ariga* and Ayyappanpillai Ajayaghosh*.
Journal of the American Chemical Society 136, 8548-8551 (2014)
069) ZnS nanorod as an efficient heavy metal ion extractor from water.
Arindam Malakar, Bidisa Das, Sucheta Sengupta, Somobrata Acharya and Sugata Ray.
Journal of Water Process Engineering 3, 74-81 (2014)
068) Shape Dependent Synthesis and Field Emission Induced Rectification in Single ZnS Nanocrystals.
Umamahesh Thupakula, Amit Dalui, Anupam Debangshi, Jayanta Kumar Bal, Gundam S. Kumar and Somobrata Acharya*.
ACS Applied Materials & Interfaces 6, 7856-7863 (2014)
067) Polymer based Nanoformulation of Methylglyoxal as an Antimicrobial Agent: Efficacy against Resistant Bacteria.
Srabanti Ghosh, Prabal Chakraborty, Partha Saha, Somobrata Acharya and Manju Ray.
RSC Advances 4, 23251-23261 (2014)
066) Modulation of Glyceraldehyde-3-phosphate dehydrogenase Activity by Surface Functionalized Quantum Dots.
Srabanti Ghosh*, Manju Ray, Mahua Rani Das, Adrita Chakraborty, Ali Hossain Khan, D. D. Sarma and Somobrata Acharya*.
Physical Chemistry Chemical Physics 16, 5276-5283 (2014)
Umamahesh Thupakula, Jayanta Kumar Bal, Amit Dalui, Anupam Debangshi, D. D. Sarma and Somobrata Acharya*.
Journal of Materials Chemistry C , 2, 1158-1164 (2014)
064) Improved Mechanical Stability of Acetoxypropyl Cellulose upon Blending with Ultra-Narrow PbS Nanowires in Langmuir Monolayer Matrix.
Subrata Maji, Sudarshan Kundu, L. F. V. Pinto, Maria Helena Godinho*, Ali Hossain Khan and Somobrata Acharya*.
Langmuir 29, 15231-15230 (2013)
063) Lead between the lines.
Somobrata Acharya*.
Nature Chemistry 5, 894 (2013)
062) Origin of chains of Au-PbS Nano-Dumbbells in space.
Chandana Mondal, Ali Hossain Khan, Bidisa Das, Somobrata Acharya* and Surajit Sengupta*.
Scientific Reports 3, 2612-2618 (2013)
061) Effect of Point Defects and Impurities on the Electronic Structure and Transport Properties of Au Tipped PbS Nanorods.
Bidisa Das and Somobrata Acharya.
Asian Journal of Chemistry 25, 414-416 (2013)
060) Evolution of Long Range Bandgap Tunable Lead Sulfide Nanocrystals with Photovoltaic Properties.
Ali Hossain Khan, Umamahesh Thupakula, Amit Dalui, Subrata Maji, Anupam Debangshi and Somobrata Acharya*.
Journal of Physical Chemistry C 117, 7934-7939 (2013)
Qingmin Ji, Somobrata Acharya, Gary J. Richards, Shaoling Zhang, Julien Vieaud, Jonathan P. Hill and Katsuhiko Ariga.
Langmuir 29, 7186-7194 (2013)
058) A Bottom-up Approach toward Fabrication of Ultrathin PbS Sheets.
Somobrata Acharya*, Bidisa Das, Umamahesh Thupakula, Katsuhiko Ariga, D. D. Sarma, Jacob Israelachvili and Yuval Golan.
Nano Letters 13, 409-415 (2013) Listed in top 20 most read articles
057) Ultra Narrow PbS Nanorod Field Emitter.
Umamahesh Thupakula, Jayanta Kumar Bal, Anupam Debangshi, Ali Hossain Khan, Amit Dalui and Somobrata Acharya*.
Journal of Physical Chemistry C 116, 18564-18570 (2012)
056) Effect of Point Defects and Impurities on the Electronic Transport of Au Tipped Ultranarrow PbS Nanorods.
Bidisa Das* and Somobrata Acharya*.
Journal of Nanoscience and Nanotechnology 12, 6258-6264 (2012)
055) Fabrication of Highly Stable, Hybrid PbS Nanocomposites in PAMAM Dendrimer Matrix for Photodetection.
Srabanti Ghosh, Ali Hossain Khan and Somobrata Acharya*.
Journal of Physical Chemistry C 116, 6022-6030 (2012)
054) Structure and Rheology of Charge-Free Reverse Micelles in Aromatic Liquid Phenyloctane.
Lok Kumar Shrestha, Rekha Goswami Shrestha, Kenji Aramaki, Somobrata Acharya and Katsuhiko Ariga.
Journal of Nanoscience and Nanotechnology 12, 3701-3715 (2012)
053) Structural characterizations of diglycerol monomyristate reverse micelles in aromatic solvent ethylbenzene.
Lok Kumar Shrestha, Rekha Goswami Shrestha, Kenji Aramaki, Somobrata Acharya, Jonathan P. Hill and Katsuhiko Ariga.
Journal of Nanoscience and Nanotechnology 12, 3716-3724 (2012)
Umamahesh Thupakula, Amitav Jena, Ali Hossain Khan, Amit Dalui and Somobrata Acharya*.
Journal of Nanoparticle Research 14, 701(1-11) (2012)
051) Water Induced Microstructure Transformation of Diglycerol Monolaurate Reverse Micelles in Ethylbenzene.
R. G. Shrestha, L. K. Shrestha, Somobrata Acharya, K. Aramaki and K. Ariga.
Journal of Oleo Science 61, 575-584 (2012)
050) Multidimensional self-assembly of peanut shaped PbS nanostructures.
Ali Hossain Khan, Sasanka Maji, S. Chakraborty, N. B. Manik and Somobrata Acharya*.
RSC Advances 2, 186-191 (2012)
049) Synthesis and Metallic Probe Induced Conductance of Au Tipped Ultranarrow PbS Rods.
Ali Hossain Khan, Qingmin Ji, Katsuhiko Ariga, Bidisa Das, D. D. Sarma and Somobrata Acharya*.
Chemical Communications 47, 8421-8423 (2011)
048) Coalescence of magic sized CdSe into rods and wires and subsequent energy transfer.
Sucheta Sengupta, D. D. Sarma* and Somobrata Acharya*.
Journal of Materials Chemistry 21, 11585-11591 (2011)
047) Size Selective Excitonic Transition Energies in Strongly Confined CdSe Quantum Dots.
Umamahesh Thupakula, Ali Hossain Khan, Jayanta Kumar Bal, Katsuhiko Ariga and Somobrata Acharya*.
Journal of Nanoscience and Nanotechnology 11, 7709-7714, (2011)
Richard Charvet*, Katsuhiko Ariga, Jonathan P. Hill, Qingmin Ji, Ali Hossain Khan and Somobrata Acharya*.
Chemical Communications 47, 6825-6827 (2011)
045) Long Range Visible Fluorescence Tunability Using Component Modulated Coupled Quantum Dots.
Sucheta Sengupta, Nirmal Ganguli, I. Dasgupta, D. D. Sarma and Somobrata Acharya*.
Advanced Materials 23, 1998�2003 (2011)
044) Size controlled ultranarrow PbS nanorods: spectroscopy and robust stability.
Ali Hossain Khan, Qingmin Ji, Katsuhiko Ariga, Umamahesh Thupakula and Somobrata Acharya*.
Journal of Materials Chemistry 21, 5671-5676 (2011)
043) Crystallographic Phase induced Electro-Optic Properties of Nanorod Blend Nematic Liquid Crystal.
Sudarshan Kundu, Jonathan P. Hill, Gary J. Richards, Katsuhiko Ariga, Ali Hossain Khan, Umamahesh Thupakula and Somobrata Acharya*.
Journal of Nanoscience and Nanotechnology 11, 7729-7734 (2011)
042) Ultra-narrow PbS Nanorod-Nematic Liquid Crystal Blend for Enhanced Electro-optic Properties.
Sudarshan Kundu, Jonathan P. Hill, Gary J. Richards, Katsuhiko Ariga, Ali Hossain Khan, Umamahesh Thupakula and Somobrata Acharya*.
041) Formation of Calcium Carbonate Crystal Using Phospholipid Monolayer Template under Ambient Condition.
Prabir Pal, Tapanendu Kamilya, Somobrata Acharya and G. B. Talapatra.
040) Chemically Programmed Ultrahigh Density Two Dimensional Semiconductor Superlattice Array.
Narayan Pradhan, Somobratra Acharya*, Katsuhiko Ariga, Niladri Karan, D. D. Sarma, Yoshiki Wada, Shlomo Efrima and Yuval Golan.
Journal of the American Chemical Society 132, 1212-1213 (2010)
I. Felner, R. Herber, Somobrata Acharya and V. P. S. Awana.
Modern Physics Letters B 24, 125-134 (2010)
038) Block-Copolymer-Nanowires with Nanosized Domain Segregation and High Charge Mobilities as Stacked p/n Heterojunction Arrays for Repeatable Photocurrent Switching.
Richard Charvet, Somobrata Acharya, Jonathan P. Hill, Misaho Akada, Meiyong Liao, Shu Seki, Yoshihito Honsho, Akinori Saeki and Katsuhiko Ariga.
Journal of the American Chemical Society 131, 18030-18031 (2009)
037) Atomic Positional versus Electronic Order in Semiconducting ZnSe Nanoparticles.
S. Cadars, B. J. Smith, J. D. Epping, Somobrata Acharya, N. Belman, Y. Golan and B. F. Chmelka.
Physical Review Letters 103, 136802-136806 (2009)
036) Shape-Dependent Confinement in Ultrasmall Zero-, One-, and Two-Dimensional PbS Nanostructures.
Somobrata Acharya*, D. D. Sarma, Yuval Golan, Sucheta Sengupta and Katsuhiko Ariga.
035) Synthesis of New Red Emitting Single-phase Europium Oxycarbonate.
Vilas Pol, Jose Moreno Calderon, Somobratra Acharya, Katsuhiko Ariga, P. Thiyagarajan and Monica Popa.
Inorganic Chemistry 48, 5569-5573 (2009)
Qingmin Ji, Somobrata Acharya, Jonathan P. Hill, Ajayan Vinu, Suk Bon Yoon, Jong-Sung Yu, Kazutami Sakamoto and Katsuhiko Ariga.
Advanced Functional Materials 19, 1792-1799 (2009)
033) Superconducting Nanocrystalline Tin Protected by Carbon.
Vilas G. Pol, P. Thiyagarajan, Somobrata Acharya, Katsuhiko Ariga and Israel Felner.
Langmuir 25, 2582-2584 (2009)
032) Hydrogen-Bond-Assisted Gold Cold Fusion for Fabrication of 2D Web Structures.
Saikat Mandal, Atsuomi Shundo, Somobrata Acharya, Jonathan P. Hill, Qingmin Ji and Katsuhiko Ariga.
031) Soft Langmuir-Blodgett Technique for Hard Nanomaterials.
Somobrata Acharya*, Jonathan P. Hill and Katsuhiko Ariga*.
Advanced Materials 21, 2959-2981 (2009)
030) Nanorod Driven Orientational Control of Liquid Crystal for Polarization-Tailored Electro-optic Devices.
Somobrata Acharya*, Sudarshan Kundu, Jonathan P. Hill, Gary J. Richards and Katsuhiko Ariga.
Advanced Materials 21, 989-993 (2009)
029) Langmuir Films of Unusual Components.
Somobrata Acharya*, Atsuomi Shundo, Jonathan P. Hill and Katsuhiko Ariga.
Journal of Nanoscience and Nanotechnology 9, 3-18 (2009)
028) Hierarchical Assembly of Ultranarrow Alkylamine-Coated ZnS Nanorods: A Synchrotron Surface X-Ray Diffraction Study.
Nataly Belman, Somobrata Acharya, Oleg Konovalov, Alexei Vorobiev, Jacob Israelachvili, Shlomo Efrima and Yuval Golan.
Nano Letters 8, 3858-3864 (2008)
Qingmin Ji, Somobrata Acharya*, J. P. Hill, Gary J. Richards and Katsuhiko Ariga*.
Advanced Materials 20, 1-6 (2008)
026) A Layered Mesoporous Carbon Sensor Based on Nanopore-Filling Cooperative Adsorption in the Liquid Phase.
Katsuhiko Ariga, Ajayan Vinu, Qingmin Ji, Osamu Ohmori, Jonathan P. Hill, Somobrata Acharya, Jun Koike and Seimei Shiratori.
Angewandte Chemie International Edition 47, 7254-7257 (2008).
025) Ultranarrow PbS nanorods with intense fluorescence.
Somobrata Acharya*, Ujjal K. Gautam, Toshio Sasaki, Yoshio Bando, Yuval Golan and Katsuhiko Ariga.
Journal of the American Chemical Society 130, 4594-4595 (2008)
024) A 16-bit parallel processor in a molecular assembly.
Anirban Bandyopadhyay and Somobrata Acharya.
Proceedings of the National Academy of Sciences 105, 3668-3672 (2008)
023) Stimuli-Free Auto-Modulated Material Release from Mesoporous Nano-Compartment Films.
Qingmin Ji, Masahiko Miyahara, Jonathan P. Hill, Somobrata Acharya, Suk Bon Yoon, Jong-Sung Yu, Kazutami Sakamoto and Katsuhiko Ariga.
Journal of the American Chemical Society 130, 2376-2377 (2008)
022) Challenges and breakthroughs in recent research on self-assembly.
Katsuhiko Ariga, Jonathan P. Hill, Michael V. Lee, Ajayan Vinu, Richard Charvet and Somobrata Acharya.
Science and Technology of Advanced Materials 9, 014109 (2008)
021) Supramolecular Chemistry as a Versatile Tool for Advanced Sciences in Nanospace.
Katsuhiko Ariga, Jonathan P Hill, Atsuomi Shundo, Ajayan Vinu, Richard Charvet and Somobrata Acharya.
Advanced Science Letters 1, 28-58 (2008)
020) Electric-field Assisted Assembly of Ultra-narrow CdS Nanomaterials (invited article).
Somobrata Acharya* and Katsuhiko Ariga.
Asian Journal of Physics 17, 97-104 (2008)
Asit Baran Panda, Somobrata Acharya, Shlomo Efrima and Yuval Golan.
Langmuir 23, 765-770 (2007)
018) Synthesis, Two-Dimensional Assembly and Surface Pressure Induced Coalescence of Ultra Narrow PbS Nanowires.
Israel Patla, Somobrata Acharya, L. Zeiri, Jacob Israelachvili, Shlomo Efrima and Yuval Golan.
Nano Letters 7, 1459-1462 (2007)
017) Role of Carbon in Enhancing the Performance of MgB2 superconductor.
V.P.S. Awana, Monika Mudgel, R. Rawat, Somobrata Acharya, H. Kishan, E. Takayama-Muromachi, A. V. Narlikar and I. Felner.
Physica C 467, 62-72 (2007)
016) Raman spectroscopy of ultra-narrow CdS nanostructures.
L. Zeiri, Israel Patla, Somobrata Acharya, Yuval Golan, Shlomo Efrima.
Journal of Physical Chemistry C 111, 11843-11848 (2007).
015) Polarization Properties and Switchable Assembly of Ultranarrow ZnSe Nanorods.
Somobrata Acharya, Asit Baran Panda, Shlomo Efrima and Yuval Golan.
Advanced Materials 19, 1105�1108 (2007).
014) Photophysical properties of 4-methyl 3-phenyl coumarin organized in Langmuir-Blodgett films: Formation of aggregates.
Somobrata Acharya, Tapanendu Kamilya, Jyotirmoy Sarkar, Tapan K. Parichha , Prabir Pal and G. B. Talapatra.
Materials Chemistry and Physics 104, 88-92 (2007).
013) Switchable Assembly of Ultra Narrow CdS Nanowires and Nanorods.
Somobrata Acharya, Israel Patela, Shlomo Efrima and Yuval Golan.
Journal of the American Chemical Society 128, 9294-9295 (2006).
012) A Semiconductor-Nanowire Assembly of Ultrahigh Junction Density by the Langmuir-Blodgett Technique.
Somobrata Acharya, Asit Baran Panda, Nataly Belman, Shlomo Efrima and Yuval Golan.
Advanced Materials 18, 210-213 (2006).
011) Two-Dimensional Pressure-Driven Nanorod-to-Nanowire Reactions in Langmuir Monolayers at Room Temperature.
Somobrata Acharya and Shlomo Efrima
010) Studies of Langmuir and Langmuir-Blodgett Films of NLO-Active Amphiphilic 1,3-Indandione Derivatives.
Somobrata Acharya, Pnina Krief, Vladimir Khodorkovsky, Zvi Kotler, Gerry Berkovic, Jacob T. Klug, Shlomo Efrima.
New Journal of Chemistry 29, 1049-1057 (2005)
009) Ultra Narrow ZnSe Nanorods and Nanowires: Structure, Spectroscopy and One-Dimensional Properties.
Asit Baran Panda*, Somobrata Acharya* and Shlomo Efrima
Advanced Materials 17, 2471-2474 (2005)
008) Spectroscopic study of non-amphiphilic 2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole aggregates at air-water interface and in Langmuir-Blodgett films.
Somobrata Acharya, D. Bhattacharjee, Jyotirmoy Sarkar and G. B. Talapatra.
Chemical Physics Letters 393, 1-6 (2004)
007) Spectroscopic study of non-amphiphilic 9-phenyl fluorene assembled in Langmuir-Blodgett films in two different matrices: dimer and excimer formation.
Somobrata Acharya, D. Bhattacharjee and G. B. Talapatra.
Chemical Physics Letters 372, 97-103 (2003)
006) Monolayer characteristics and spectroscopic study of benz(b)fluoranthene assembled in Langmuir Blodgett films mixed with stearic acid.
Somobrata Acharya, D. Bhattacharjee and G. B. Talapatra.
Journal of Physics and Chemistry of Solids 64, 651-657 (2003)
Somobrata Acharya, Tapan K. Parichha and G. B. Talapatra.
Journal of Luminescence 96, 177-184 (2002)
004) Spectroscopic characteristics of 9-cyanoanthracene mixed with polymethyl methacrylate and stearic acid in Langmuir-Blodgett films.
Somobrata Acharya, D. Bhattacharjee and G. B. Talapatra.
Chemical Physics Letters 352, 429-434 (2002)
003) Spectroscopic study of Pentacene assembled in Langmuir-Blodgett film mixed with stearic acid.
Somobrata Acharya, Tapan K. Parichha and G. B. Talapatra.
Indian Journal of Pure and Applied Physics 40, 12-17 (2002)
002) Spectroscopic investigation of mixed LB films of benzo(k)fluoranthene.
Somobrata Acharya, D. Bhattacharjee, M. Ghosh and G. B. Talapatra.
Journal of Colloid and Interface Science 244, 313-318 (2001)
001) Spectroscopic properties of decacyclene assembled in Langmuir Blodgett film mixed with stearic acid.
Somobrata Acharya, T. K. Parichha and G. B. Talapatra.
Molecular Crystals Liquid Crystals 12, 91-100 (2000)
2011-2018
Teaching post–B.Sc. integrated Ph.D. Program in Chemical Sciences since 2011
(i) Elementary Polymer and Solid State Chemistry (Semester-II CH425) (ii) Advanced Materials Science, Surface science, Solid-Solid interfaces Nanomaterials and Properties (Semester-IV, CH525)
Teaching post–B.Sc. Integrated Ph.D. Program in Physical Sciences: Experimental Laboratory Coordinator for Electronics (Semester-I, PH407) (From 2016-2018). Set-up the electronics laboratory in IACS for Ph.D. Program in Physical Sciences.
PhD Course:
PhD 07: Concepts, Models and Techniques in Chemistry
2018- 2019
Liquid crystals and display AIS-5202
Laboratory Courses AIS-4205
MicroscopyCH525
2019- till date
Liquid crystals and display AIS-5202
Laboratory Courses AIS-4205
1. “NANOROD FORMULATION FOR LIQUID CRYSTAL DISPLAYFOR POLARIZATION CONTROL-TYPE ELECTRO-OPTICAL APPARATUS” (Japanese Patent Registration No. 5382691)
2. “Synergistic tunability of visible emissions using component modulated coupled dots”, Indian Patent Filed (DICTEM Control No.: 1050/KOL/2010/NPA02/2010).
3. “Method of permanent removal of Arsenic(III) from water through Tooeleite-like framework”
Indian Patent Filed (DICTEM Control No.: NPA02/2015)
4. “Solution Processed Freestanding Two-dimensional Ultrathin Binary PbS Nanocrystals for Efficient and Highly Stable Dielectric Applications” Indian Patent Applied (Application No/ 201731046468)
5. “Flexible Rubber device for energy conversion”
European Patent Applied
6. “EARTH ABUNDANT COPPER-ZINC-TIN-SULFIDE CZTS THIN DIELECTRIC LAYER” Indian Patent Filed (T.1. (52)/TIFA/2018)
7. "TRANSPARENT, FLEXIBLE SILICON NANOWIRE NETWORKS WITH SEAMLESS JUNCTION FOR HIGH PERFORMANCE PHOTODETECTOR APPLICATIONS" (Application No/201931017619)
8. Triboelectric mask system with virucidal property for personal protective equipment (Application No/202031048853)
