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Nain A, Chakraborty S, Barman SR, Gavit P, Indrakumar S, Agrawal A, Lin ZH, Chatterjee K. Progress in the development of piezoelectric biomaterials for tissue remodeling. Biomaterials 2024; 307:122528. [PMID: 38522326 DOI: 10.1016/j.biomaterials.2024.122528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/15/2024] [Accepted: 03/08/2024] [Indexed: 03/26/2024]
Abstract
Piezoelectric biomaterials have demonstrated significant potential in the past few decades to heal damaged tissue and restore cellular functionalities. Herein, we discuss the role of bioelectricity in tissue remodeling and explore ways to mimic such tissue-like properties in synthetic biomaterials. In the past decade, biomedical engineers have adopted emerging functional biomaterials-based tissue engineering approaches using innovative bioelectronic stimulation protocols based on dynamic stimuli to direct cellular activation, proliferation, and differentiation on engineered biomaterial constructs. The primary focus of this review is to discuss the concepts of piezoelectric energy harvesting, piezoelectric materials, and their application in soft (skin and neural) and hard (dental and bone) tissue regeneration. While discussing the prospective applications as an engineered tissue, an important distinction has been made between piezoceramics, piezopolymers, and their composites. The superiority of piezopolymers over piezoceramics to circumvent issues such as stiffness mismatch, biocompatibility, and biodegradability are highlighted. We aim to provide a comprehensive review of the field and identify opportunities for the future to develop clinically relevant and state-of-the-art biomaterials for personalized and remote health care.
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Affiliation(s)
- Amit Nain
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India.
| | - Srishti Chakraborty
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Snigdha Roy Barman
- Department of Bioengineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Pratik Gavit
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India; School of Bio Science and Technology, Vellore Institute of Technology, Vellore, 632014, India
| | - Sushma Indrakumar
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Akhilesh Agrawal
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
| | - Zong-Hong Lin
- Department of Biomedical Engineering, National Taiwan University, Taipe, 10617, Taiwan.
| | - Kaushik Chatterjee
- Department of Material Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India; Department of Bioengineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India.
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2
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Chen CT, Weng CC, Fan KP, Barman SR, Pal A, Liu CB, Li YK, Lin ZH, Chang CC. Guanidinium-Functionalized Polymer Dielectrics for Triboelectric Bacterial Detection. ACS Appl Mater Interfaces 2024; 16:1502-1510. [PMID: 38147587 DOI: 10.1021/acsami.3c15353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Development of rapid detection strategies that target potentially pathogenic bacteria has gained increasing attention due to the increasing awareness for better health and safety. In this study, we evaluate an intrinsically antimicrobial polymer, 2Gdm, which is a poly(norbornene)-based functional polymer featuring guanidinium groups as side chains, for bacterial detection by the means of triboelectric nanogenerators (TENGs) and triboelectric nanosensors (TENSs). Attachment of bacteria to the sensing layer is anticipated to alter the overall triboelectric properties of the underlying polymer layer. The positively charged guanidinium functional groups can interact with the negatively charged phospholipid bilayer of bacteria and lead to bacterial death, which can then be detected by optical microscopy, X-ray photoelectron microscopy, and more advanced self-powered sensing techniques such as TENGs and TENSs. The double bonds present along the poly(norbornene) backbone allow for thermally induced cross-linking to obtain X-2Gdm and thus rendering materials remain stable in water. By monitoring the change in voltage output after immersion in various concentrations of Gram-negative Escherichia coli (E. coli) and Gram-positive Streptococcus pneumoniae (S. pneumoniae), we have demonstrated the utility of X-2Gdm as a new polymer dielectric for autonomous bacterial detection. As the bacterial concentration increases, the amount of adsorbed bacteria also increases, resulting in a decrease in the surface potential of the X-2Gdm thin film; this reduction in surface potential can cause a decrease in the triboelectric output for both TENGs and TENSs, which serves as a key working mechanism for facile bacterial detection. TENG and TENS systems are capable of detecting E. coli and S. pneumoniae within a range of 4 × 105 to 4 × 108 CFU/mL with a limit of detection of 106 CFU/mL. This report highlights the promising prospects of employing TENGs and TENSs as innovative sensing technologies for rapid bacterial detection by leveraging the electrostatic interactions between bacterial cell membranes and cationic groups present on polymer surfaces.
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Affiliation(s)
- Chi-Ting Chen
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Chang-Ching Weng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Kai-Po Fan
- Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Snigdha Roy Barman
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30010, Taiwan
| | - Arnab Pal
- Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chang-Bo Liu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Yaw-Kuen Li
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Zong-Hong Lin
- Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30010, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30010, Taiwan
| | - Chia-Chih Chang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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3
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Roy Barman S, Jhunjhunwala S. Electrical Stimulation for Immunomodulation. ACS Omega 2024; 9:52-66. [PMID: 38222551 PMCID: PMC10785302 DOI: 10.1021/acsomega.3c06696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/29/2023] [Accepted: 12/04/2023] [Indexed: 01/16/2024]
Abstract
The immune system plays a key role in the development and progression of numerous diseases such as chronic wounds, autoimmune diseases, and various forms of cancer. Hence, controlling the behavior of immune cells has emerged as a promising approach for treating these diseases. Current modalities for immunomodulation focus on chemical based approaches, which while effective have the limitations of nonspecific systemic side effects or requiring invasive delivery approaches to reduce the systemic side effects. Recent advances have unraveled the significance of electrical stimulation as an attractive noninvasive approach to modulate immune cell phenotype and activity. This review provides insights on electrical stimulation strategies employed for regulating the behavior of macrophages, T and B cells, and neutrophils. For obtaining a better understanding, two major types of electrical stimulation sources, conventional and self-powered sources, that have been used for immunomodulation are extensively discussed. Next, the strategies of electrical stimulation that may be applied to cells in vitro and in vivo are discussed, with a focus on conventional and stimuli-responsive self-powered sources. A description of how these strategies influence the polarization, phagocytosis, migration, and differentiation of immune cells is also provided. Finally, recent developments in the use of highly localized and efficient platforms for electrical stimulation based immunomodulation are also highlighted.
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Affiliation(s)
- Snigdha Roy Barman
- Department of Bioengineering, Indian Institute of Science, Bengaluru, India 560012
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4
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Pal A, Ganguly A, Wei P, Barman SR, Chang C, Lin Z. Construction of Triboelectric Series and Chirality Detection of Amino Acids Using Triboelectric Nanogenerator. Adv Sci (Weinh) 2024; 11:e2307266. [PMID: 38032132 PMCID: PMC10811508 DOI: 10.1002/advs.202307266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Indexed: 12/01/2023]
Abstract
Triboelectrification necessitates a frictional interaction between two materials, and their contact electrification is characteristically based on the polarity variance in the triboelectric series. Utilizing this fundamental advantage of the triboelectric phenomenon, different materials can be identified according to their contact electrification capability. Herein, an in-depth analysis of the amino acids present in the stratum corneum of human skin is performed and these are quantified regarding triboelectric polarization. The principal focus of this study lies in analyzing and identifying the amino acids present in copious amounts in the stratum corneum to explain their positive behavior during the contact electrification process. Thus, an augmented triboelectric series of amino acids with quantified triboelectric charging polarity by scrutinizing the transfer charge, work function, and atomic percentage is presented. Furthermore, the chirality of aspartic acid as it is most susceptible to racemization with clear consequences on the human skin is detected. The study is expected to accelerate research exploiting triboelectrification and provide valuable information on the surface properties and biological activities of these important biomolecules.
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Affiliation(s)
- Arnab Pal
- International Intercollegiate PhD ProgramNational Tsing Hua UniversityHsinchu30013Taiwan
- Institute of Biomedical EngineeringNational Tsing Hua UniversityHsinchu30013Taiwan
| | - Anindita Ganguly
- Department of Biomedical EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Po‐Han Wei
- Institute of Biomedical EngineeringNational Tsing Hua UniversityHsinchu30013Taiwan
| | - Snigdha Roy Barman
- International Intercollegiate PhD ProgramNational Tsing Hua UniversityHsinchu30013Taiwan
- Institute of Biomedical EngineeringNational Tsing Hua UniversityHsinchu30013Taiwan
| | - Chia‐Chih Chang
- Department of Applied ChemistryNational Yang Ming Chiao Tung University1001 University RoadHsinchu30010Taiwan
| | - Zong‐Hong Lin
- Department of Biomedical EngineeringNational Taiwan UniversityTaipei10617Taiwan
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Roy Barman S, Gavit P, Chowdhury S, Chatterjee K, Nain A. 3D-Printed Materials for Wastewater Treatment. JACS Au 2023; 3:2930-2947. [PMID: 38034974 PMCID: PMC10685417 DOI: 10.1021/jacsau.3c00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 12/02/2023]
Abstract
The increasing levels of water pollution pose an imminent threat to human health and the environment. Current modalities of wastewater treatment necessitate expensive instrumentation and generate large amounts of waste, thus failing to provide ecofriendly and sustainable solutions for water purification. Over the years, novel additive manufacturing technology, also known as three-dimensional (3D) printing, has propelled remarkable innovation in different disciplines owing to its capability to fabricate customized geometric objects rapidly and cost-effectively with minimal byproducts and hence undoubtedly emerged as a promising alternative for wastewater treatment. Especially in membrane technology, 3D printing enables the designing of ultrathin membranes and membrane modules layer-by-layer with different morphologies, complex hierarchical structures, and a wide variety of materials otherwise unmet using conventional fabrication strategies. Extensive research has been dedicated to preparing membrane spacers with excellent surface properties, potentially improving the membrane filtration performance for water remediation. The revolutionary developments in membrane module fabrication have driven the utilization of 3D printing approaches toward manufacturing advanced membrane components, including biocarriers, sorbents, catalysts, and even whole membranes. This perspective highlights recent advances and essential outcomes in 3D printing technologies for wastewater treatment. First, different 3D printing techniques, such as material extrusion, selective laser sintering (SLS), and vat photopolymerization, emphasizing membrane fabrication, are briefly discussed. Importantly, in this Perspective, we focus on the unique 3D-printed membrane modules, namely, feed spacers, biocarriers, sorbents, and so on. The unparalleled advantages of 3D printed membrane components in surface area, geometry, and thickness and their influence on antifouling, removal efficiency, and overall membrane performance are underlined. Moreover, the salient applications of 3D printing technologies for water desalination, oil-water separation, heavy metal and organic pollutant removal, and nuclear decontamination are also outlined. This Perspective summarizes the recent works, current limitations, and future outlook of 3D-printed membrane technologies for wastewater treatment.
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Affiliation(s)
- Snigdha Roy Barman
- Department
of Bioengineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Pratik Gavit
- Department
of Materials Engineering, Indian Institute
of Science, Bangalore, Karnataka 560012, India
| | - Saswat Chowdhury
- Department
of Bioengineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Kaushik Chatterjee
- Department
of Bioengineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
- Department
of Materials Engineering, Indian Institute
of Science, Bangalore, Karnataka 560012, India
| | - Amit Nain
- Department
of Materials Engineering, Indian Institute
of Science, Bangalore, Karnataka 560012, India
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6
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Kumar Sharma M, Khan I, Kaswan K, Roy Barman S, Saha S, Hsieh W, Chueh Y, Wang Y, Lee S, Choi D, Lin Z. Emergence of Non‐photoresponsive Catalytic Techniques for Environmental Remediation and Energy Generation. Chem Asian J 2023. [DOI: 10.1002/asia.202300262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
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7
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Sharma MK, Khan I, Kaswan K, Barman SR, Saha S, Hsieh WC, Chueh YL, Wang YL, Lee S, Choi D, Lin ZH. Emergence of Non-photoresponsive Catalytic Techniques for Environmental Remediation and Energy Generation. Chem Asian J 2023; 18:e202300090. [PMID: 36920733 DOI: 10.1002/asia.202300090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/16/2023]
Abstract
Catalysis plays an important role in all the major applications and challenges in the environment, including energy generation, environmental purification and wastewater remediation. Although photocatalysts are desirable in addressing energy and environmental issues, they have some major drawbacks, such as solar sensitivity, low efficiency, and easy charge recombination, which limit their applications. Hence, it is imperative to design and explore new catalytic techniques that include nonphotoresponsive catalysts. In this review, the detailed possibilities, characteristics and prospects of non-photoresponsive catalysts, such as piezocatalysts, temperature-based catalysts such as thermocatalysts and pyrocatalysts, and tribocatalysts along with hybrid catalysts are described. The overall mechanism of each catalytic technique and its applications in different fields, such as energy generation, degradation of organic pollutants, wastewater remediation, ROS generation, and reduction of carbon dioxide, are discussed.
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Affiliation(s)
- Manish Kumar Sharma
- NTHU: National Tsing Hua University, Department of Materials Science and Engineering, TAIWAN
| | - Imran Khan
- NTHU: National Tsing Hua University, Institute of NanoEngineering and Microsystems, TAIWAN
| | - Kuldeep Kaswan
- NTHU: National Tsing Hua University, Intercollegiate PhD Program, TAIWAN
| | - Snigdha Roy Barman
- NTHU: National Tsing Hua University, Intercollegiate PhD Program, TAIWAN
| | - Subhajit Saha
- Maulana Abul Kalam Azad University of Technology, Department of Renewable Energy, INDIA
| | - Wu-Chiao Hsieh
- CGMH: Chang Gung Memorial Hospital Linkou, Department of Obstetrics and Gynecology, TAIWAN
| | - Yu-Lun Chueh
- NTHU: National Tsing Hua University, Department of Materials Science and Engineering, TAIWAN
| | - Yu-Lin Wang
- NTHU: National Tsing Hua University, Institute of NanoEngineering and Microsystems, TAIWAN
| | - Sangmin Lee
- Chung-Ang University, School of Mechanical Engineering, KOREA, REPUBLIC OF
| | - Dukhyun Choi
- SKKU: Sungkyunkwan University, Department of Mechanical Engineering, KOREA, REPUBLIC OF
| | - Zong-Hong Lin
- NTU: National Taiwan University, Department of Biomedical Engineering, TAIWAN
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8
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Roy Barman S, Lin YJ, Lee KM, Pal A, Tiwari N, Lee S, Lin ZH. Triboelectric Nanosensor Integrated with Robotic Platform for Self-Powered Detection of Chemical Analytes. ACS Nano 2023; 17:2689-2701. [PMID: 36700939 DOI: 10.1021/acsnano.2c10770] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Rapid on-site detection of hazardous chemicals is imperative for remote security and environmental monitoring applications. However, the implementation of current sensing technologies in real environments is limited due to an external high-power requirement, poor selectivity and sensitivity. Recent progress in triboelectric nanosensors and nanogenerators presents tremendous opportunities to address these issues. Here, we report an innovative self-powered triboelectric nanosensor for detection of Hg2+ ions, a harmful chemical pollutant, in a rapid single step on-site detection mechanism. Based on the mechanism of solid-liquid contact electrification, tellurium nanowire (Te NW) arrays serving as a solid triboelectric material as well as the sensing probe underwent periodic contact and separation with the Hg2+ solution, leading to the in situ formation of mercury telluride nanowire (HgTe NWs) owing to the selective binding affinity of Te NWs toward Hg2+ ions. To realize the on-site sensing potential, Te NW arrays were mounted onto the robotic hands equipped with additional wireless transmission functionality for rapid detection of Hg2+ ions in resource-limited settings by employing a simple "touch and sense" mechanism. Such a demonstration of direct integration of self-powered sensors with robotics would lead to the development of low-cost, automated chemical sensing machinery for the on-field detection of harmful analytes.
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Affiliation(s)
- Snigdha Roy Barman
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Yu-Jhen Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Kuan-Ming Lee
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Arnab Pal
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Naveen Tiwari
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Sangmin Lee
- School of Mechanical Engineering, Chung-Ang University, Seoul 06974, South Korea
| | - Zong-Hong Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
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Barman SR, Chan SW, Kao FC, Ho HY, Khan I, Pal A, Huang CC, Lin ZH. A self-powered multifunctional dressing for active infection prevention and accelerated wound healing. Sci Adv 2023; 9:eadc8758. [PMID: 36696504 PMCID: PMC9876552 DOI: 10.1126/sciadv.adc8758] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
Interruption of the wound healing process due to pathogenic infection remains a major health care challenge. The existing methods for wound management require power sources that hinder their utilization outside of clinical settings. Here, a next generation of wearable self-powered wound dressing is developed, which can be activated by diverse stimuli from the patient's body and provide on-demand treatment for both normal and infected wounds. The highly tunable dressing is composed of thermocatalytic bismuth telluride nanoplates (Bi2Te3 NPs) functionalized onto carbon fiber fabric electrodes and triggered by the surrounding temperature difference to controllably generate hydrogen peroxide to effectively inhibit bacterial growth at the wound site. The integrated electrodes are connected to a wearable triboelectric nanogenerator (TENG) to provide electrical stimulation for accelerated wound closure by enhancing cellular proliferation, migration, and angiogenesis. The reported self-powered dressing holds great potential in facilitating personalized and user-friendly wound care with improved healing outcomes.
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Affiliation(s)
- Snigdha Roy Barman
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- International Intercollegiate Ph.D. Program, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shuen-Wen Chan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Fu-Cheng Kao
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Orthopaedic Surgery, Spine Section, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Hsuan-Yu Ho
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Imran Khan
- Institute of NanoEngineering and Microsystems, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Arnab Pal
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- International Intercollegiate Ph.D. Program, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202301, Taiwan
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202301, Taiwan
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Zong-Hong Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan
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Pal A, Kaswan K, Barman SR, Lin YZ, Chung JH, Sharma MK, Liu KL, Chen BH, Wu CC, Lee S, Choi D, Lin ZH. Microfluidic nanodevices for drug sensing and screening applications. Biosens Bioelectron 2023; 219:114783. [PMID: 36257116 PMCID: PMC9533638 DOI: 10.1016/j.bios.2022.114783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 09/18/2022] [Accepted: 10/01/2022] [Indexed: 11/03/2022]
Abstract
The outbreak of pandemics (e.g., severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 in 2019), influenza A viruses (H1N1 in 2009), etc.), and worldwide spike in the aging population have created unprecedented urgency for developing new drugs to improve disease treatment. As a result, extensive efforts have been made to design novel techniques for efficient drug monitoring and screening, which form the backbone of drug development. Compared to traditional techniques, microfluidics-based platforms have emerged as promising alternatives for high-throughput drug screening due to their inherent miniaturization characteristics, low sample consumption, integration, and compatibility with diverse analytical strategies. Moreover, the microfluidic-based models utilizing human cells to produce in-vitro biomimetics of the human body pave new ways to predict more accurate drug effects in humans. This review provides a comprehensive summary of different microfluidics-based drug sensing and screening strategies and briefly discusses their advantages. Most importantly, an in-depth outlook of the commonly used detection techniques integrated with microfluidic chips for highly sensitive drug screening is provided. Then, the influence of critical parameters such as sensing materials and microfluidic platform geometries on screening performance is summarized. This review also outlines the recent applications of microfluidic approaches for screening therapeutic and illicit drugs. Moreover, the current challenges and the future perspective of this research field is elaborately highlighted, which we believe will contribute immensely towards significant achievements in all aspects of drug development.
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Affiliation(s)
- Arnab Pal
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Kuldeep Kaswan
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Snigdha Roy Barman
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yu-Zih Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Jun-Hsuan Chung
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Manish Kumar Sharma
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Kuei-Lin Liu
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Bo-Huan Chen
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 30013, Taiwan; Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Linkou Medical Center, Taoyuan, 333, Taiwan
| | - Chih-Cheng Wu
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; Center of Quality Management, National Taiwan University Hospital, Hsinchu Branch, Hsinchu, 30059, Taiwan; College of Medicine, National Taiwan University, Taipei, 10051, Taiwan; Institute of Cellular and System Medicine, National Health Research Institute, Zhunan, 35053, Taiwan
| | - Sangmin Lee
- School of Mechanical Engineering, Chung-Ang University, Seoul, 06974, South Korea.
| | - Dongwhi Choi
- Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, Gyeonggi, 17104, South Korea.
| | - Zong-Hong Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 30013, Taiwan; Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan; Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan; Department of Mechanical Engineering (Integrated Engineering Program), Kyung Hee University, Gyeonggi, 17104, South Korea.
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11
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Lin YJ, Khan I, Saha S, Wu CC, Barman SR, Kao FC, Lin ZH. Thermocatalytic hydrogen peroxide generation and environmental disinfection by Bi 2Te 3 nanoplates. Nat Commun 2021; 12:180. [PMID: 33420069 PMCID: PMC7794375 DOI: 10.1038/s41467-020-20445-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 12/01/2020] [Indexed: 11/09/2022] Open
Abstract
The highly reactive nature of reactive oxygen species (ROS) is the basis for widespread use in environmental and health-related fields. Conventionally, there are only two kinds of catalysts used for ROS generation: photocatalysts and piezocatalysts. However, their usage has been limited due to various environmental and physical factors. To address this problem, herein, we report thermoelectric materials, such as Bi2Te3, Sb2Te3, and PbTe, as thermocatalysts which can produce hydrogen peroxide (H2O2) under a small surrounding temperature difference. Being the most prevalent environmental factors in daily life, temperature and related thermal effects have tremendous potential for practical applications. To increase the practicality in everyday life, bismuth telluride nanoplates (Bi2Te3 NPs), serving as an efficient thermocatalyst, are coated on a carbon fiber fabric (Bi2Te3@CFF) to develop a thermocatalytic filter with antibacterial function. Temperature difference induced H2O2 generation by thermocatalysts results in the oxidative damage of bacteria, which makes thermocatalysts highly promising for disinfection applications. Antibacterial activity as high as 95% is achieved only by the treatment of low-temperature difference cycles. The current work highlights the horizon-shifting impacts of thermoelectric materials for real-time purification and antibacterial applications.
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Affiliation(s)
- Yu-Jiung Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Imran Khan
- Institute of NanoEngineering and Microsystems, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Subhajit Saha
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chih-Cheng Wu
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.,Cardiovascular Center, National Taiwan University Hospital, Hsinchu Branch, Hsinchu, 30059, Taiwan.,College of Medicine, National Taiwan University, Taipei, 10051, Taiwan.,Institute of Cellular and System Medicine, National Health Research Institute, Zhunan, 35053, Taiwan
| | - Snigdha Roy Barman
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Fu-Cheng Kao
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.,Department of Orthopaedic Surgery, Spine Section, Chang Gung Memorial Hospital, Taoyuan, 33305, Taiwan
| | - Zong-Hong Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan. .,Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan. .,Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan.
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12
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Husain RA, Barman SR, Chatterjee S, Khan I, Lin ZH. Enhanced biosensing strategies using electrogenerated chemiluminescence: recent progress and future prospects. J Mater Chem B 2020; 8:3192-3212. [DOI: 10.1039/c9tb02578b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An overview of enhancement strategies for highly sensitive ECL-based sensing of bioanalytes enabling early detection of cancer.
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Affiliation(s)
- Rashaad A. Husain
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Snigdha Roy Barman
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Subhodeep Chatterjee
- Department of Power Mechanical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Imran Khan
- Institute of NanoEngineering and MicroSystems
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Zong-Hong Lin
- Institute of Biomedical Engineering
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
- Department of Power Mechanical Engineering
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13
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Barman SR, Nain A, Jain S, Punjabi N, Mukherji S, Satija J. Dendrimer as a multifunctional capping agent for metal nanoparticles for use in bioimaging, drug delivery and sensor applications. J Mater Chem B 2018; 6:2368-2384. [DOI: 10.1039/c7tb03344c] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Various strategies (single & multi-pot) to synthesize dendrimer-coated metal nanoparticles and their exploration in various biomedical applications.
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Affiliation(s)
| | - Amit Nain
- School of Biosciences and Technology
- VIT Vellore
- India
| | - Saumey Jain
- School of Biosciences and Technology
- VIT Vellore
- India
| | - Nirmal Punjabi
- Department of Biosciences and Bioengineering
- IIT Bombay
- Mumbai 400076
- India
| | - Soumyo Mukherji
- Department of Biosciences and Bioengineering
- IIT Bombay
- Mumbai 400076
- India
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14
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Singh S, Nayak J, Rai A, Rajput P, Hill AH, Barman SR, Pandey D. (3 + 1)D superspace description of the incommensurate modulation in the premartensite phase of Ni2MnGa: a high resolution synchrotron x-ray powder diffraction study. J Phys Condens Matter 2013; 25:212203. [PMID: 23656722 DOI: 10.1088/0953-8984/25/21/212203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Le Bail and Rietveld analysis of high resolution synchrotron x-ray powder diffraction (SXRPD) data shows unambiguous signatures of the failure of the commensurate 3M modulation model. Using (3 + 1) dimensional superspace group formalism, we have not only confirmed the incommensurate modulation in the premartensite phase with a modulation wavevector of q = 0.337 61(5)c* but also determined the superspace group (Immm(00γ)s00), atomic positions and amplitude of modulations for the incommensurate premartensite phase of Ni2MnGa for the first time. Our results may have important implications in the understanding of the martensitic transition and hence the magnetic field induced strains.
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Affiliation(s)
- Sanjay Singh
- UGC-DAE Consortium for Scientific Research, Indore, India
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15
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Abstract
The austenite to martensite phase transition in Ni-Mn-Ga ferromagnetic shape memory alloys was studied by extended x-ray absorption fine structure (EXAFS) and x-ray absorption near-edge structure (XANES) spectroscopy. The spectra at all the three elements', namely, Mn, Ga and Ni, K-edges in several Ni-Mn-Ga samples (with both Ni and Mn excess) were analyzed at room temperature and low temperatures. The EXAFS analysis suggested a displacement of Mn and Ga atoms in opposite direction with respect to the Ni atoms when the compound transforms from the austenite phase to the martensite phase. The first coordination distances around the Mn and Ga atoms remained undisturbed on transition, while the second and subsequent shells showed dramatic changes indicating the presence of a modulated structure. The Mn rich compounds showed the presence of antisite disorder of Mn and Ga. The XANES results showed remarkable changes in the unoccupied partial density of states corresponding to Mn and Ni, while the electronic structure of Ga remained unperturbed across the martensite transition. The post-edge features in the Mn K-edge XANES spectra changed from a double peak like structure to a flat peak like structure upon phase transition. The study establishes strong correlation between the crystal structure and the unoccupied electronic structure in these shape memory alloys.
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Affiliation(s)
- V G Sathe
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, India.
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16
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Singh S, Rawat R, Muthu SE, D'Souza SW, Suard E, Senyshyn A, Banik S, Rajput P, Bhardwaj S, Awasthi AM, Ranjan R, Arumugam S, Schlagel DL, Lograsso TA, Chakrabarti A, Barman SR. Spin-valve-like magnetoresistance in Mn2NiGa at room temperature. Phys Rev Lett 2012; 109:246601. [PMID: 23368355 DOI: 10.1103/physrevlett.109.246601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Indexed: 06/01/2023]
Abstract
Spin valves have revolutionized the field of magnetic recording and memory devices. Spin valves are generally realized in thin film heterostructures, where two ferromagnetic (FM) layers are separated by a nonmagnetic conducting layer. Here, we demonstrate spin-valve-like magnetoresistance at room temperature in a bulk ferrimagnetic material that exhibits a magnetic shape memory effect. The origin of this unexpected behavior in Mn(2)NiGa has been investigated by neutron diffraction, magnetization, and ab initio theoretical calculations. The refinement of the neutron diffraction pattern shows the presence of antisite disorder where about 13% of the Ga sites are occupied by Mn atoms. On the basis of the magnetic structure obtained from neutron diffraction and theoretical calculations, we establish that these antisite defects cause the formation of FM nanoclusters with parallel alignment of Mn spin moments in a Mn(2)NiGa bulk lattice that has antiparallel Mn spin moments. The direction of the Mn moments in the soft FM cluster reverses with the external magnetic field. This causes a rotation or tilt in the antiparallel Mn moments at the cluster-lattice interface resulting in the observed asymmetry in magnetoresistance.
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Affiliation(s)
- Sanjay Singh
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, India
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17
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Nayak J, Maniraj M, Rai A, Singh S, Rajput P, Gloskovskii A, Zegenhagen J, Schlagel DL, Lograsso TA, Horn K, Barman SR. Bulk electronic structure of quasicrystals. Phys Rev Lett 2012; 109:216403. [PMID: 23215602 DOI: 10.1103/physrevlett.109.216403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 09/26/2012] [Indexed: 06/01/2023]
Abstract
We use hard x-ray photoemission to resolve a controversial issue regarding the mechanism for the formation of quasicrystalline solids, i.e., the existence of a pseudogap at the Fermi level. Our data from icosahedral fivefold Al-Pd-Mn and Al-Cu-Fe quasicrystals demonstrate the presence of a pseudogap, which is not observed in surface sensitive low energy photoemission because the spectrum is affected by a metallic phase near the surface. In contrast to Al-Pd-Mn, we find that in Al-Cu-Fe the pseudogap is fully formed; i.e., the density of states reaches zero at E(F) indicating that it is close to the metal-insulator phase boundary.
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Affiliation(s)
- J Nayak
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, India
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18
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Maniraj M, Raja Sekhar BN, Barman SR. Note: characterization of CaF2/acetone bandpass photon detector with Kr filter gas. Rev Sci Instrum 2012; 83:046107. [PMID: 22559593 DOI: 10.1063/1.4704374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A modified design of a CaF(2)/acetone bandpass photon detector that uses Kr as a filter gas to tune the energy resolution is presented. Our design combines two standard single window detector tubes to build the Kr filter gas chamber. Synchrotron radiation has been used to determine the energy resolution of the detector, as a function of Kr pressure. The improvement in the detector energy resolution by 250 meV compared to the CaF(2)/acetone detector is better than that reported earlier. Substantial variation in the shape of the CaF(2)/acetone detector response functions is observed for different acetone pressure (≤3 mbar), and anode voltage (≤800 V). Our analysis reveals that the changes in the shape of the detector response function are associated to different regions of the detector operation.
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Affiliation(s)
- M Maniraj
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, Madhya Pradesh, India
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19
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Maniraj M, D'Souza SW, Nayak J, Rai A, Singh S, Sekhar BNR, Barman SR. High energy resolution bandpass photon detector for inverse photoemission spectroscopy. Rev Sci Instrum 2011; 82:093901. [PMID: 21974594 DOI: 10.1063/1.3630948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report a bandpass ultraviolet photon detector for inverse photoemission spectroscopy with energy resolution of 82 ± 2 meV. The detector (Sr(0.7)Ca(0.3)F(2)/acetone) consists of Sr(0.7)Ca(0.3)F(2) entrance window with energy transmission cutoff of 9.85 eV and acetone as detection gas with 9.7 eV photoionization threshold. The response function of the detector, measured using synchrotron radiation, has a nearly Gaussian shape. The n = 1 image potential state of Cu(100) and the Fermi edge of silver have been measured to demonstrate the improvement in resolution compared to the CaF(2)/acetone detector. To show the advantage of improved resolution of the Sr(0.7)Ca(0.3)F(2)/acetone detector, the metal to semiconductor transition in Sn has been studied. The pseudogap in the semiconducting phase of Sn could be identified, which is not possible with the CaF(2)/acetone detector because of its worse resolution.
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Affiliation(s)
- M Maniraj
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh, India
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20
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Ahuja BL, Dashora A, Heda NL, Priolkar KR, Vadkhiya L, Itou M, Lobo N, Sakurai Y, Chakrabarti A, Singh S, Barman SR. Temperature dependent spin momentum densities in Ni-Mn-In alloys. J Phys Condens Matter 2010; 22:446001. [PMID: 21403357 DOI: 10.1088/0953-8984/22/44/446001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The spin-dependent electron momentum densities in Ni(2)MnIn and Ni(2)Mn(1.4)In(0.6) shape memory alloy using magnetic Compton scattering with 182.2 keV circularly polarized synchrotron radiation are reported. The magnetic Compton profiles were measured at different temperatures ranging between 10 and 300 K. The profiles have been analyzed mainly in terms of Mn 3d electrons to determine their role in the formation of the total spin moment. We have also computed the spin polarized energy bands, partial and total density of states, Fermi surfaces and spin moments using full potential linearized augmented plane wave and spin polarized relativistic Korringa-Kohn-Rostoker methods. The total spin moments obtained from our magnetic Compton profile data are explained using both the band structure models. The present Compton scattering investigations are also compared with magnetization measurements.
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Affiliation(s)
- B L Ahuja
- Department of Physics, University College of Science, M L Sukhadia University, Udaipur, India.
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21
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Dhaka RS, Shukla AK, Maniraj M, D'Souza SW, Nayak J, Barman SR. An ultrahigh vacuum compatible sample holder for studying complex metal surfaces. Rev Sci Instrum 2010; 81:043907. [PMID: 20441350 DOI: 10.1063/1.3367302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present a design of a compact and versatile sample holder meant for studying complex (ternary) metallic crystals that require sputtering and annealing to high temperatures under ultrahigh vacuum (10(-10) mbar range) for obtaining the clean, ordered and stoichiometric surface. A resistive heater is fixed to the sample holder and not to the sample plate, and thus can be thoroughly degassed initially to high temperatures without heating the sample. The heater, which is mounted vertically on the sample holder frame, slides into the sample plate of rectangular cross-section during sample transfer. For efficient cooling that is required for adlayer deposition, Cu braids can be pressed on the sample plate from both sides through a screw mechanism. The sample holder has 5 degrees of freedom including a tilt rotation. The sample holder has been used to study different metal surfaces such as ferromagnetic shape memory alloys, alkali metal and Mn adlayers on Al-Pd-Mn quasicrystal, aluminum metal, and Al-Mn alloys. Here, our recent results on temperature dependent low energy electron diffraction study of Ni(2)MnGa(100) are presented.
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Affiliation(s)
- R S Dhaka
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001 Madhya Pradesh, India
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22
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Dhaka RS, Barman SR. Plasmon excitations by photoelectron emission from rare gas nanobubbles in aluminum. Phys Rev Lett 2010; 104:036803. [PMID: 20366669 DOI: 10.1103/physrevlett.104.036803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Indexed: 05/29/2023]
Abstract
Aluminum bulk, surface, and multiple plasmons have been observed in the core-level spectra of rare gas (Ne, Ar, and Xe) nanobubbles in Al, whose intensities are even higher than those of Al metal. Both intrinsic and extrinsic bulk plasmons are detected, but they exhibit diametrically opposite intensity variation due to change in the size and implantation depth of the bubbles. Furthermore, the existence of bubble surface plasmon is demonstrated.
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Affiliation(s)
- R S Dhaka
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh, India
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23
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Shukla AK, Dhaka RS, D'Souza SW, Maniraj M, Barman SR, Horn K, Ebert P, Urban K, Wu D, Lograsso TA. Manganese adlayers on i-Al-Pd-Mn quasicrystal: growth and electronic structure. J Phys Condens Matter 2009; 21:405005. [PMID: 21832407 DOI: 10.1088/0953-8984/21/40/405005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Pseudomorphic growth of thin elemental metal films is often observed on a variety of crystalline solids. On quasicrystalline surfaces with their complex structure and the absence of translational periodicity, the situation is different since elemental metals do not exhibit quasicrystalline order, and hence the specific interaction between overlayer and substrate is decisive. Here we study the growth of manganese films on an icosahedral i-Al-Pd-Mn alloy with a view to establishing the growth mode and electronic structure. Although we observe an exponential intensity variation of the adlayer and substrate related x-ray photoemission spectroscopy (XPS) peaks, low energy electron diffraction (LEED) shows that Mn adlayers do not exhibit quasicrystallinity. The detailed structure of the Mn 2p core level line reveals considerable electronic structure differences between the quasicrystalline and elemental metal environment. Evidence of a substantial local magnetic moment on the Mn atoms in the overlayer (about 2.8 µ(B)) is obtained from the Mn 3s exchange splitting.
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Affiliation(s)
- A K Shukla
- UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, India. Institut Jean Lamour, UMR 7198 CNRS-Nancy Université-UPV Metz, Département CP2S, ENS Mines Nancy, Parc de Saurupt, CS 14234, 54042 Nancy Cedex, France
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24
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Biswas C, Shukla AK, Banik S, Barman SR, Chakrabarti A. Argon nanobubbles in Al(111): a photoemission study. Phys Rev Lett 2004; 92:115506. [PMID: 15089150 DOI: 10.1103/physrevlett.92.115506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2003] [Indexed: 05/24/2023]
Abstract
Two fundamental manifestations of Al conduction electron response to Ar atom core hole in the final state of photoemission have been studied in implanted Ar bubbles in Al(111). Ar 2p binding energy and the Doniach-Sunjić asymmetry of the core-level line shape vary systematically as functions of Ar+ implantation energy and number of ions bombarded (fluence). The observations are explained by relating the strength of Al conduction electron screening to the size of the Ar nanobubbles.
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Affiliation(s)
- C Biswas
- Inter University Consortium for Department of Atomic Energy Facilities, Khandwa Road, Indore 452017, M.P., India
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25
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Barman SR, Häberle P, Horn K, Maytorena JA, Liebsch A. Quantum well behavior without confining barrier observed via dynamically screened photon field. Phys Rev Lett 2001; 86:5108-5111. [PMID: 11384433 DOI: 10.1103/physrevlett.86.5108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2000] [Indexed: 05/23/2023]
Abstract
Angle-resolved photoemission spectra from Na adlayers on Al(111) reveal features which behave like quantum well resonances although the substrate provides no confining barrier. These features are observed in a narrow photon energy range where overlayer collective excitations cause resonant enhancement of the photoemission intensity. The quantum well behavior is shown to be due to surface resonances of the Na/Al system. The resonances are observable using photoemission because of spatial confinement and dynamical enhancement of the local electric field within the Na films.
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Affiliation(s)
- S R Barman
- Fritz-Haber Institut der Max-Planck Gesellschaft, 14195 Berlin, Germany
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Barman SR, Shanthi N, Shukla AK, Sarma DD. Order-disorder and electronic transitions in Ag2+ delta S single crystals studied by photoemission spectroscopy. Phys Rev B Condens Matter 1996; 53:3746-3751. [PMID: 9983925 DOI: 10.1103/physrevb.53.3746] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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27
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Bocquet AE, Mizokawa T, Morikawa K, Fujimori A, Barman SR, Maiti K, Sarma DD, Tokura Y, Onoda M. Electronic structure of early 3d-transition-metal oxides by analysis of the 2p core-level photoemission spectra. Phys Rev B Condens Matter 1996; 53:1161-1170. [PMID: 9983572 DOI: 10.1103/physrevb.53.1161] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Gokhale S, Barman SR, Sarma DD. Dielectric function and optical conductivity of TiOx (0.8<x<1.3) determined from electron energy-loss spectroscopy. Phys Rev B Condens Matter 1995; 52:14526-14530. [PMID: 9980783 DOI: 10.1103/physrevb.52.14526] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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29
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Sarma DD, Shanthi N, Barman SR, Hamada N, Sawada H, Terakura K. Band theory for ground-state properties and excitation spectra of perovskite LaMO3 (M=Mn, Fe, Co, Ni). Phys Rev Lett 1995; 75:1126-1129. [PMID: 10060212 DOI: 10.1103/physrevlett.75.1126] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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30
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Barman SR, Sarma DD. Electronic structures of gallium and indium across the solid-liquid transition. Phys Rev B Condens Matter 1995; 51:4007-4013. [PMID: 9979236 DOI: 10.1103/physrevb.51.4007] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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31
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Barman SR, Sarma DD. Electronic structure of TiOx (0.8<x<1.3) with disordered and ordered vacancies. Phys Rev B Condens Matter 1994; 49:16141-16148. [PMID: 10010759 DOI: 10.1103/physrevb.49.16141] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Barman SR, Sarma DD. Photoelectron-spectroscopy investigation of the spin-state transition in LaCoO3. Phys Rev B Condens Matter 1994; 49:13979-13982. [PMID: 10010347 DOI: 10.1103/physrevb.49.13979] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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33
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Barman SR, Chainani A, Sarma DD. Covalency-driven unusual metal-insulator transition in nickelates. Phys Rev B Condens Matter 1994; 49:8475-8478. [PMID: 10009616 DOI: 10.1103/physrevb.49.8475] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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34
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Sarma DD, Barman SR, Cimino R, Carbone C, Sen P, Roy A, Chainani A, Gudat W. Importance of dynamical effects in determining the Auger spectral shape: L23-M45M45 spectra of Fe, Co, and Cu. Phys Rev B Condens Matter 1993; 48:6822-6831. [PMID: 10006844 DOI: 10.1103/physrevb.48.6822] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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