Article
Chemistry, Multidisciplinary
Joy Zhou, Jinwon Seo, Yudian Wu, Cedric P. P. Ambulo, Zachary M. M. Marsh, Kyungmin N. N. Lee, Nicholas P. P. Godman, Zachariah A. Page
Summary: Spatial control over molecular order in polymeric systems has the potential to advance healthcare and photonics applications. However, current challenges in implementing noncontact ordering mechanisms such as photoalignment include the use of high-intensity light, limitations to thin films and specific substrates, multistep syntheses, and costly processing. This study reports on an optimized process using photo-polymerization and -alignment to achieve substrate-independent photoalignment of thick, optically transparent LC networks, along with photopatterning for complex images. This user-friendly process will enable the production of stimuli-responsive plastics for improved human health and information security.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Botta Bhavani, Madoori Mrinalini, Jonnadula Venkata Suman Krishna, Pratyay Basak, Lingamallu Giribabu, Seelam Prasanthkumar
Summary: The rolling mechanism is important for tuning the dimensionality of nanostructures, with potential applications in nanomedicine and organic electronics. The new porphyrin-derived system P2, composed of porphyrin and benzothiadiazole, showed high-conducting 1D nanofibers from the diagonal scrolling of 2D nanosheets, highlighting its potential in organic electronics. NIR absorption and efficient optoelectronic characteristics of the derivatives promote them as alternatives for inorganic semiconductors.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Chemical
Qiyun Pan, Shan Jiang, Zhong Li, Yisi Liu, Yue Du, Nian Zhao, Yunfeng Zhang, Jun-Ming Liu
Summary: A polymer electrolyte with high porosity and enhanced lithium ion transference number can endow lithium metal batteries with high energy density and relieved dendrite growth. The highly porous po-PVPB membrane exhibits good mechanical strength and high solvent uptake, and the po-PVPB electrolyte shows high tLi+ for suppressing lithium dendrite growth, making it potentially applicable in lithium metal batteries.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Polymer Science
Bienvenu Atawa, Lea Maneval, Pierre Alcouffe, Guillaume Sudre, Laurent David, Nathalie Sintes-Zydowicz, Emmanuel Beyou, Anatoli Serghei
Summary: In this study, in-situ coupled mechanical/electrical investigations were conducted on TPU-based nanocomposite materials filled with carbon black. The impact of mechanical deformation and thermal treatment on the structure/properties relationship was explored using SAXS/WAXS, DSC, and TEM measurements. It was found that adjusting the structure and morphology of TPU can efficiently modify the coupled electro-mechanical behavior of the composite materials.
Article
Polymer Science
Isabel Quijada-Garrido, Olga Garcia
Summary: The development of fluorescent water stable copper nanoclusters using amphiphilic block copolymers as templates shows promising results for synthesizing high luminescent nanohybrids in water. The composition and architecture of the polymers, thiol content, and nanoparticle size are key factors influencing the emission properties of the CuNC nanohybrids.
EUROPEAN POLYMER JOURNAL
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Przemyslaw Gromala, Daniel Riegel, Georg Konstantin, Alexander Kabakchiev
Summary: The transformation in the automobile sector has resulted in a significant increase in service time, requiring new concepts to ensure reliable electronics. Connected Braking systems offer a novel method for in-situ stress monitoring in real field applications.
IEEE 72ND ELECTRONIC COMPONENTS AND TECHNOLOGY CONFERENCE (ECTC 2022)
(2022)
Article
Chemistry, Multidisciplinary
Rakesh Sen, Shounik Paul, Sriram Krishnamurthy, Anupama Devi, Ethayaraja Mani, R. J. M. Klein Gebbink, Soumyajit Roy
Summary: This study demonstrates with experimental evidence how the emulation of space-time symmetry breaking by electrochemical realization of a Time-Gel' can lead to the creation of matter. Time-Gel' is realized by inducing the gelation phenomenon of discrete molecular precursors, and the temporal information descriptor (Q) exhibits a power-law relationship (Q proportional to Phi(g)^n) with the volume fraction of the gel (Phi(g)). The exponent n is 5, indicating the divergence in matter creation. This finding further supports the understanding that the breaking of symmetry under conditions following Noether's theorem leads to the emergence of matter. In summary, this research proposes the idea of symmetry breaking and presents the electrochemical realization of the Time-Gel' model as an alternative explanation for the creation of matter based on Chemical Science.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Optics
Muruga Lokesh, Gokul Nalupurackal, Srestha Roy, Snigdhadev Chakraborty, Jayesh Goswami, M. Gunaseelan, Imdad Uddin Chowdhury, Vidya P. Bhallamudi, Pallab Sinha Mahapatra, Basudev Roy
Summary: Particles can be assembled at the air-water interface by optically induced local heating and convection currents. Using upconverting particles (UCPs) that emit visible light and generate heat, the assembly process is improved. The UCPs induce strong convection currents, causing particle assembly at the interface and near the UCP.
Article
Biochemistry & Molecular Biology
Privita Edwina Rayappan George Edwin, Sumeet Kumar, Srestha Roy, Basudev Roy, Saumendra Kumar Bajpai
Summary: TACS-3 is a prognostic indicator for breast cancer survival and is associated with highly organized collagen fibers. The study found that the anisotropy of collagen matrix can induce directed migration of cancer cells and is correlated with the anisotropy of cell membrane viscoelasticity.
Article
Physics, Multidisciplinary
Gokul Nalupurackal, Muruga Lokesh, Sarangi Suresh, Srestha Roy, Snigdhadev Chakraborty, Jayesh Goswami, M. Gunaseelan, Arnab Pal, Basudev Roy
Summary: The realization of microscopic heat engines has become a topic of intense research in statistical physics, soft matter, and biological physics. In this study, a lanthanide-doped upconverting particle (UCP) suspended in a passive aqueous bath is used as the working substance, exhibiting activity when trapped with a 975 nm laser and vanishing activity when trapped with a 1064 nm laser. By carefully manipulating the wavelength-dependent activity of the particle, all four cycles of a Stirling engine are engineered. This study presents a robust setup for harnessing temperature and building microscopic engines.
NEW JOURNAL OF PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Srestha Roy, Rahul Vaippully, Muruga Lokesh, Gokul Nalupurackal, Vandana Yadav, Snigdhadev Chakraborty, Manoj Gopalakrishnan, Privita Edwina Rayappan George Edwin, Saumendra Kumar Bajpai, Basudev Roy
Summary: Conventionally, only normal cell membrane fluctuations have been studied to determine membrane properties. However, a new concept called membrane local slope fluctuations has been introduced and found to behave differently than normal fluctuations. In this study, we investigate the effect of the drug Latrunculin-B on membrane fluctuations and find that while the normal fluctuations show a power law behavior, the slope fluctuations remain constant. This provides a convenient opportunity to study membrane parameters as the membrane softens after drug application. We also explore the active athermal fluctuations in the membrane and find their timescales to be slower than 1 second.
Article
Physics, Multidisciplinary
Snigdhadev Chakraborty, Gokul Nalupurackal, M. Gunaseelan, Srestha Roy, Muruga Lokesh, Jayesh Goswami, Priyankan Datta, Pallab Sinha Mahapatra, Basudev Roy
Summary: It has been found that upconverting particles like Yb and Er-doped NaYF4 have inefficient upconversion processes, leading to low heat generation. However, co-doping NaYF4 particles with Yb, Er, and Fe can improve the photothermal conversion efficiency. In addition, this study demonstrates for the first time that alternating magnetic fields can also heat up ferromagnetic particles. Furthermore, a combination of optical and magnetic stimuli significantly increases the heat generated by the particles.
JOURNAL OF PHYSICS COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Ipsita Nath, Jeet Chakraborty, Nidhi Kumari, Francis Verpoort, Soumyajit Roy
Summary: This article provides a succinct perspective on the wide range of applications of nanoparticles in catalysis. It discusses the role of nanocrystals and the electronic shuttling involved in catalysis, as well as the concepts of Soft Matter and Active Matter. The emerging concept of Operando Systems Chemistry Algorithm (OSCA) is also introduced, discussing strategies for targeted catalytic assays.
JOURNAL OF MOLECULAR AND ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Jayesh Goswami, Gokul Nalupurackal, Muruga Lokesh, Srestha Roy, Snigdhadev Chakraborty, Arijit Bhattacharya, Pallab Sinha Mahapatra, Basudev Roy
Summary: This article presents an alternative strategy to induce the self-assembly of hematite particles through the indirect influence of optically confined and heated upconverting particles (UCP) at an air-water interface, generating convection currents that facilitate assembly. The assembled hematite particles can be moved using magnetic fields and employed for interfacial rheology.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Biochemical Research Methods
Urvashi Nakul, Srestha Roy, Gokul Nalupurackal, Snigdhadev Chakraborty, Priyanka Siwach, Jayesh Goswami, Privita Edwina, Saumendra Kumar Bajpai, Rajesh Singh, Basudev Roy
Summary: This study investigates the stochastic trajectories of a passive microparticle inside a cell through experiments and theory, and finds that appropriate theoretical models can accurately extract the active forces experienced by the particle.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Physics, Multidisciplinary
Gokul Nalupurackal, Kingshuk Panja, Snigdhadev Chakraborty, Srestha Roy, Jayesh Goswami, Basudev Roy, Rajesh Singh
Summary: In recent studies, researchers have reported a hydro-thermophoretic trap that can trap and manipulate microparticles and living cells outside a laser beam. This trap works based on the competition between thermoplasmonic flows and thermophoresis caused by laser heating. In this study, the controlled roll rotation of a microparticle in the hydro-thermophoretic trap was demonstrated through experiments and theory, with the roll angular velocity measured experimentally and predicted computationally.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Anand Dev Ranjan, Rakesh Sen, Rahul Vaippully, Sumeet Kumar, Soumya Dutta, Basudev Roy, Goutam Dev Mukherjee, Soumyajit Roy, Ayan Banerjee
Summary: The engineering of interfaces is crucial in determining the fundamental properties of matter, and microbubble lithography (MBL) is a method that enables interface engineering. By using MBL to create patterned interfaces of a polymer, the conductivity of the polymer can be greatly enhanced, especially on a flexible PDMS substrate.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Rakesh Sen, Kousik Das, Subhrokoli Ghosh, Anand Dev Ranjan, Khokan Manna, Ayan Banerjee, Soumyajit Roy
Summary: We describe a light-driven interface engineering technique for a microcatalytic chip that enables facile para nitration with high selectivity. This technique has potential applications for the synthesis of aromatic compounds with high selectivity and atom economy.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Kousik Das, Sarika Lohkna, Gang Yang, Prasenjit Ghosh, Soumyajit Roy
Summary: Vacancy-rich MoS2 with S vacancies on the basal plane shows excellent photocatalytic activity towards CO2 reduction, with simultaneous presence of 2H phase and 1T' phase enhancing the separation of photogenerated electron-hole pairs. Surfactant-assisted exfoliation process increases inter-lamellar spacing and improves light absorption ability in the visible region.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Gokul Nalupurackal, M. Gunaseelan, Srestha Roy, Muruga Lokesh, Sumeet Kumar, Rahul Vaippully, Rajesh Singh, Basudev Roy
Summary: Optical tweezers have revolutionized micromanipulation, but the high laser power can damage biological samples. Therefore, the use of fluid flow fields for indirect manipulation of microparticles and objects has become important. Recent research has shown that opto-plasmonic heating of a gold surface can induce rotation of cells and particles. In this study, two hotspots were placed in close proximity to form a unique configuration of flow fields, creating an effective quasi-three-dimensional 'trap' with the assistance of thermophoresis.
Article
Chemistry, Multidisciplinary
Merin Jose, Muruga Lokesh, Rahul Vaippully, Dillip K. Satapathy, Basudev Roy
Summary: The study investigates the direction-resolved viscoelastic properties of particle-laden interfaces using optical tweezers and birefringent probe particles. The results show that the modes orthogonal to the interface and the rotational mode also exhibit a viscous to viscoelastic transition, but with lower viscoelasticity compared to the in-plane mode.
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)