Article
Optics
Chenxiong Wang, Yiran Chen, Xiangqian Meng, Yilin Meng, Shengchao Gong, Mengxin Ren, Jingjun Xu
Summary: This study performs error analysis of a metasurface polarimeter based on a rotating metasurface. The errors in the measured Stokes parameters are formulated for the errors in the Mueller elements of the metasurface, aiming to evaluate and minimize the errors of the metasurface polarimeter.
Article
Chemistry, Multidisciplinary
Bin Zhang, Jan E. Stehr, Ping-Ping Chen, Xingjun Wang, Fumitaro Ishikawa, Weimin M. Chen, Irina A. Buyanova
Summary: This study demonstrates highly efficient second-harmonic generation in subwavelength wurtzite (WZ) GaAs nanowires, providing an effective strategy for enhancing and manipulating the nonlinear optical response in nanowires through lattice engineering.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ming-Chi Chen, Indira Govindaraju, Wei-Hsun Wang, Wei-Liang Chen, Kamalesh Dattaram Mumbrekar, Sib Sankar Mal, Bhaswati Sarmah, Vishwa Jyoti Baruah, Pornsak Srisungsitthisunti, Naregundi Karunakara, Nirmal Mazumder, Guan-Yu Zhuo
Summary: Starch, a semi-crystalline macromolecule, consists of amorphous and crystalline components. The three-dimensional molecular order and inherent chirality of starch granules and their reaction to gamma irradiation were assessed using polarization-resolved second harmonic generation (P-SHG) microscopy and SHG-circular dichroism (CD). The relationship between starch achirality (chi(21)/chi(16) and chi(22)/chi(16)) and chirality (chi(14)/chi(16)) determining susceptibility tensor ratios was elucidated for the first time. The results showed changes in the structure and orientation of long-chain amylopectin, supported by the decrease in SHG anisotropy factor and the chi(22)/chi(16) ratio. Additionally, SHG-CD revealed the molecular tilt angle based on the arrangement of amylopectin molecules.
MICROSCOPY AND MICROANALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Zhang, Yangchun Tan, Yangda Dong, Liyufeng Dai, Chuanlai Ren, Fengyuan Zhang, Lingping Zeng, Feng An, Changjian Li, Boyuan Huang, Gaokuo Zhong, Jiangyu Li
Summary: The Materials Genome Initiative aims to accelerate the discovery, development, manufacture, and deployment of advanced materials. This study introduces a high-throughput scanning second-harmonic-generation microscope that enables rapid screening and probing of polar materials. The technique is applied to investigate ferroelectrics and demonstrate its high-throughput capabilities using compositional-gradient and thickness-gradient films.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yann Foucaud, Bertrand Siboulet, Magali Duvail, Alban Jonchere, Olivier Diat, Rodolphe Vuilleumier, Jean-Francois Dufreche
Summary: A breakthrough method has been developed to predict and interpret SHG signal at the atomic level, showing the significant impact of bulk quadrupole contribution in the SHG response. The experimental results are in unprecedented agreement with the simulated responses.
Article
Optics
Angel Cifuentes, Tomas Pikalek, Petra Ondrackova, Rodrigo Amezcua-Correa, Jose Enrique Antonio-Lopez, Tomas Cizmar, Johanna Tragardh
Summary: This study demonstrates label-free second-harmonic generation (SHG) microscopy using a multimode fiber-based endoscope, enabling polarization-resolved imaging of structural proteins in tissue at depths beyond the reach of multiphoton imaging. The method shows promise for instant and in situ diagnosis of tumors and fibrotic conditions with minimal damage.
Article
Physics, Applied
Dekel Raanan, Man Suk Song, William A. Tisdale, Dan Oron
Summary: This study extends image scanning microscopy to second harmonic generation (SHG) by extracting the complex field amplitude of the second-harmonic beam, allowing for super-resolved phase-sensitive SHG microscopy.
APPLIED PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Kunze Lu, Manlin Luo, Weibo Gao, Qi Jie Wang, Hao Sun, Donguk Nam
Summary: Despite the centrosymmetric nature of graphene, strain engineering can be used to manipulate its lattice arrangement and induce sublattice polarization, activating second harmonic generation (SHG). The SHG signal in strained graphene is boosted 50-fold at low temperatures due to resonant transitions between strain-induced pseudo-Landau levels. The second-order susceptibility of strained graphene exceeds that of hexagonal boron nitride with intrinsic broken inversion symmetry, opening up possibilities for high-efficiency nonlinear devices.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Multidisciplinary
Chao Gao, Fujie Wang, Xueke Wen, Jianyu Weng, Bing Lei
Summary: This paper investigates the calibration problem of the vortex retarder based spatially modulated polarimeter and proposes an efficient calibration method. A theoretical model is established to analyze the general effects of different error sources on the intensity modulation curve of incident waves. Calibration experiments are conducted to verify the effectiveness, accuracy, and ease of implementation of the proposed method.
Article
Chemistry, Multidisciplinary
Chenshuang Zhang, Fangrui Lin, Yong Zhang, Haozhi Yang, Danying Lin, Jun He, Changrui Liao, Xiaoyu Weng, Liwei Liu, Yiping Wang, Bin Yu, Junle Qu
Summary: MSIM-SHG is a novel approach that combines second-harmonic generation (SHG) with multifocal structured illumination microscopy (MSIM) to achieve super-resolution imaging. It has wide applications in imaging material molecules and quantifying collagen fiber alignment, showing potential for clinical diagnosis and biological research.
Article
Chemistry, Multidisciplinary
Yuqiang Fang, Xin Feng, Dong Wang, Yang Ding, Tianquan Lin, Tianyou Zhai, Fuqiang Huang
Summary: Polarization-independent second harmonic generation has been achieved in van der Waals Nb3SeI7 crystals, which have a breathing Kagome lattice structure. The Nb3SeI7 crystals show a strong SHG response due to their noncentrosymmetric crystal structure. This work provides the first layered nonlinear optical crystal with polarization-independent SHG effect, opening up new possibilities for nonlinear optics.
Article
Materials Science, Multidisciplinary
Redhwan Moqbel, Yih-Ren Chang, Zi-Yi Li, Sheng-Hsun Kung, Hao-Yu Cheng, Chi-Cheng Lee, Kosuke Nagashio, Kung-Hsuan Lin
Summary: In this work, the layered structure and ferroelectric properties of SnS were investigated experimentally and theoretically. Polarization-resolved second harmonic generation microscopy was used to study SnS few layers on mica substrates, and significant variations in SHG polar patterns were observed in the range of 800 nm to 1000 nm. Theoretical calculations were consistent with experimental results. This work is important for understanding the ferroelectric properties of SnS and the transition of different ferroic phases.
Article
Chemistry, Multidisciplinary
Biwei Wu, Keyi Wu, Xuefeng Sun, Weibo Wang, Jiubin Tan
Summary: This paper introduces an imaging technique based on circular dichroism second-harmonic generation (CD-SHG) to characterize the 3D distribution of KTP nanocrystals. The circular dichroism analysis can probe the orientation of KTP samples, and the research results show that the azimuthal angle is related to the excitation polarization, refractive index mismatches, and imaging depth.
FRONTIERS IN CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Aswin Alexander, Mayank Gupta, Dileep Kottilil, Bibhuti Bhusan Rath, Jagadese J. Vittal, Wei Ji
Summary: Metal complexes have been gaining attention in recent times over traditional inorganic materials, showing advantages such as two-photon absorption and second harmonic generation. By controlling the incident light polarization, tunability between these two nonlinear optical processes can be achieved. The observed SHG d(eff) values of one complex are determined to be one order of magnitude greater than beta-BBO crystals.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Zi-Yi Li, Hao-Yu Cheng, Sheng-Hsun Kung, Hsuan-Chun Yao, Christy Roshini Paul Inbaraj, Raman Sankar, Min-Nan Ou, Yang-Fang Chen, Chi-Cheng Lee, Kung-Hsuan Lin
Summary: In this study, the strain dependence on the angle-resolved second harmonic generation (SHG) pattern of InSe, an emerging van der Waals material, was experimentally measured. The SHG intensity of InSe was found to decrease with increasing compressive strain. By using first-principles electronic structure calculations, the strain dependence on SHG susceptibilities and the corresponding angle-resolved SHG pattern were investigated. The proposed method based on first-principles can be used to quantitatively model the strain-induced angle-resolved SHG patterns in 2D materials.
Article
Physics, Applied
Subir Das, Yun-Yu Hsu, Ying-Rue Kao, Bao-Yu Hsieh, Fu-Jen Kao
Summary: In this study, a synchronous time delay technique is presented to control the illuminating laser pulses and the generation of ultrasonic waves for visualizing the ultrasound waveform through the Schlieren imaging method. The proposed technique allows for two-dimensional mapping of the ultrasound waveform in a temporally evolved manner, and the critical physical parameters such as the speed and spatial pulse length of the ultrasonic waves can be visualized and calculated through image analysis.
APPLIED PHYSICS LETTERS
(2022)
Review
Food Science & Technology
Ishita Chakraborty, N. Pooja, Sib Sankar Mal, Uttam C. Paul, Md. Hafizur Rahman, Nirmal Mazumder
Summary: This review explores the different methods of starch modification applicable in the food industry and analyzes their effects on the gelatinization properties of starch. Chemical modifications can decrease the gelatinization temperature, while physical modifications tend to increase it. These modifications have significant implications for improving the quality and performance of food products.
FOOD AND BIOPROCESS TECHNOLOGY
(2022)
Review
Food Science & Technology
Aditi Sengupta, Ishita Chakraborty, G. Indira, Nirmal Mazumder
Summary: The interaction between starch and lipid leads to complexes that have various applications in the food industry. These complexes can affect the texture, quality, and other characteristics of food products. Various techniques can be used to study the structural, thermal, and chemical properties of these starch-lipid complexes.
FOOD REVIEWS INTERNATIONAL
(2023)
Review
Biotechnology & Applied Microbiology
Soumyabrata Banik, Ashwini Uchil, Tenzin Kalsang, Sanjiban Chakrabarty, Md. Azahar Ali, Pornsak Srisungsitthisunti, Krishna Kishore Mahato, Salvatore Surdo, Nirmal Mazumder
Summary: Microfluidics revolutionizes cellular biology research by providing control over the physicochemical environment and enabling high-throughput cellular analysis. The introduction of PDMS as a structural material has made microfluidic technology more accessible and widely applicable in various biological fields. This review emphasizes the innovative applications of PDMS-based microfluidic systems in pre-clinical biological research, enhancing sensitivity and diagnostic effectiveness in cell-based assays.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2023)
Review
Environmental Sciences
I Chakraborty, S. Banik, R. Biswas, T. Yamamoto, H. Noothalapati, N. Mazumder
Summary: The increasing demand and use of plastics have led to the concentration of microplastics in water bodies, posing threats to aquatic life and human health. Various water sources, including fresh, marine, and sewage, have been found to contain microplastics. Raman spectroscopy has been proven to be an essential tool in identifying the chemical composition of microplastics in water sources.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kuheli Das, Manasa G. Shetty, Sindhoora K. Melanthota, Babitha K. Sundara, Sudeshna Kar, Chiara Massera, Eugenio Garribba, Amitabha Datta, Nirmal Mazumder
Summary: A new mononuclear Mn(III) derivative was synthesized and characterized. The central Mn atom is hexa-coordinated via the NNOO donor sites of the Schiff base precursor and two water molecules, resulting in a distorted octahedral geometry. The cytotoxic activity of the derivative was evaluated, and it exhibited a better activity against MCF-7 cells compared to SiHa and fibroblast cells.
Review
Pharmacology & Pharmacy
Upama Das, Soumyabrata Banik, Sharmila Sajankila Nadumane, Shweta Chakrabarti, Dharshini Gopal, Shama Prasada Kabekkodu, Pornsak Srisungsitthisunti, Nirmal Mazumder, Rajib Biswas
Summary: Cancer is a devastating disease and early diagnosis remains a challenge. Recently, circulating tumor cells (CTCs) have been extensively studied for their potential in detecting metastasis. Nanomaterial-based strategies have emerged as promising tools for early and rapid examination of tumor cells. This review provides a comprehensive overview of different nanotechnological methodologies and their application in cancer research, including the detection, isolation, and analysis of CTCs. State-of-the-art implementations, future challenges, and recommendations are also discussed.
Article
Physics, Applied
F. S-S Chien, A. Herawati, C-M Ho, H-L Hsiao, T-S Lim, C. R. Wang, K-K Ng, S. Das, F-J Kao, M-C Wu
Summary: The photon-induced deactivation of traps in MAPbI(3) has a significant impact on charge relaxation behavior. Through analyzing steady-state and time-resolved photoluminescence spectroscopy, it was found that three types of traps (T-L, T-H, and T-GB) in MAPbI(3) films can be deactivated by photons. Different thresholds were observed for the deactivation of these traps, with T-L and T-H having low and high energy thresholds, respectively, while T-GB had a lower energy threshold. The deactivation of these traps led to changes in photoluminescence quantum yield and recombination time.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Review
Biotechnology & Applied Microbiology
Nag Pooja, Ishita Chakraborty, Md. Hafizur Rahman, Nirmal Mazumder
Summary: Durability and affordability are the main reasons for the popularity of plastic, but their inability to degrade poses a significant threat to the environment and human health. Bioplastics, derived from renewable biomass, offer a promising alternative with lower carbon footprint and reduced greenhouse gas emissions. This review compares the biodegradation rates of potential bioplastics from various sources, highlighting their potential as replacements for conventional plastics.
Review
Optics
Gagan Raju, Nirmal Mazumder
Summary: Optical microscopy has been hindered in its biological applicability due to the limited penetration depth, but researchers have proposed various methods to address this, including designing novel probes and using adaptive optics (AO) technology. Through AO paradigms, techniques such as direct and indirect wavefront sensing have been developed to detect and rectify wavefront deformations and aberrations. Additionally, algorithmic post-processing without mechanical feedback has been used to correct optical patterns. Sensorless AO enables reliable optical imaging through thick biological tissue. This review highlights the latest advancements in AO-based optical microscopy techniques for depth-resolved imaging and discusses their potential in biomedical applications.
Article
Polymer Science
Ishita Chakraborty, Indira Govindaraju, Steffi Kunnel, Vishwanath Managuli, Nirmal Mazumder
Summary: This study investigated the effect of storage time and temperature on the retrogradation of rice starch. The results showed that increasing storage time and decreasing temperature increased the degree of retrogradation, which in turn affected the formation of resistant starch and alterations in thermal and rheological properties.
Article
Engineering, Biomedical
K. U. Spandana, Bhagesh Basavraj Hunakunti, Aymeric Le Gratiet, Ankur Gogoi, Nirmal Mazumder
Summary: Simulating the light scattering properties and studying the microstructural information of SARS-CoV-2 can help understand the virology of the coronavirus and develop effective detection strategies.
LASERS IN MEDICAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jayur Tisso, Surajit Konwer, Gazi A. Ahmed, Nirmal Mazumder, Ankur Gogoi
Summary: This study investigates the photoluminescent properties of diatom frustules using spectroscopy and theoretical calculations. The role of various defects and impurity groups in the photoluminescence of diatom frustules is analyzed.
BULLETIN OF MATERIALS SCIENCE
(2023)
Article
Biotechnology & Applied Microbiology
Thripthi Ananda, Ankita Modi, Ishita Chakraborty, Vishwanath Managuli, Chiranjay Mukhopadhyay, Nirmal Mazumder
Summary: This review discusses the concept and major pathogens of hospital-acquired infections (HAIs). Due to the increasing antibacterial resistance, nanotechnology offers new solutions for detecting and treating bacterial infections. The paper also focuses on the HAI situation in India and highlights the significant initiatives taken by medical bodies and hospitals in raising awareness and providing training.
BIOENGINEERING-BASEL
(2022)
Article
Biochemistry & Molecular Biology
Vishwa Jyoti Baruah, Rasana Paul, Dhrubajyoti Gogoi, Nirmal Mazumder, Subrata Chakraborty, Aparoopa Das, Tapan Kumar Mondal, Bhaswati Sarmah
Summary: This study aimed to explore the potential biomedical applications of plant-based natural compounds derived from Thumbai (Leucas aspera) using a multi-omics approach. Nine compounds were identified as potential candidates based on their pharmacokinetics parameters. Target fishing techniques revealed renin receptor (ATP6AP2) and thymidylate kinase (DTYMK) as potential targets. Network biology approaches validated the functional, biochemical, and clinical relevance of these targets. Molecular modeling, pharmacophore approaches, and molecular dynamics simulation were used to investigate the target-ligand interaction and stability. Isololiolide and 4-hydroxy-2-methoxycinnamaldehyde were identified as lead molecules with the best binding affinity against the two potential protein targets. These natural lead products may have medical applications in various neurodegenerative, genetic, and developmental disorders, as well as potential diagnostic and therapeutic applications in transplantation-related pathogenesis, autoimmune diseases, and other immunological disorders.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2022)
