Article
Chemistry, Multidisciplinary
Zhangbin Feng, Ke Wang, Yukang Liu, Biao Han, Deng-Guang Yu
Summary: In this study, core-sheath structure fibers composed of PVDF and NPs as the shell layer and PCL as the core layer were prepared using electrospinning. The addition of PVDF and NPs increased the polar phase of the fibers, and PCL improved their mechanical properties. The core-sheath structure fibers demonstrated enhanced mechanical and piezoelectric properties, making them suitable for wearable electronics applications.
Review
Chemistry, Multidisciplinary
J. Chen, C. Ayranci, T. Tang
Summary: The development of electrospun PVDF fibers has led to the research of piezoelectric materials for applications in flexible self-powered generators. Studies have focused on improving the piezoelectric properties by introducing fillers or additives. This work provides a comprehensive review and analysis of the production, characterization, and modeling of PVDF composite fibers to enhance flexibility and piezoelectricity, offering insights into the challenges and potential in the field of high-performance energy harvesting systems.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Md Ashiqur Rahman, Fariha Rubaiya, Nazmul Islam, Karen Lozano, Ali Ashraf
Summary: This study investigates the sensing and energy generation performance of PVDF/PAni fiber mat systems made by the forcespinning method with and without graphene coating. The graphene-coated nanocomposites show improved output voltage and current performance, as well as better sensitivity and voltage generation for temperature and vibration sensing. The graphene-coated composite also shows potential as a water tide energy harvesting piezoelectric nanogenerator.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Julio E. Trevino, Swati Mohan, Alexandra E. Salinas, Emilia Cueva, Karen Lozano
Summary: This study developed and characterized PVDF-conjugated polymer nanofiber-based systems, with PVDF/PPY nanofiber system exhibiting the highest piezoelectric performance. These systems show potential as an attractive source of energy for various devices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Ali Ashraf, Md Ashiqur Rahman, Fariha Rubaiya, Nazmul Islam, Karen Lozano
Summary: Forcespinning is a powerful technique for producing fiber systems with suitable properties. This study demonstrates that graphene-coated forcespinning nanofiber mats exhibit improved sensing and energy performance. The graphene-coated nanocomposites show enhanced sensitivity in temperature, vibration, and airflow sensing, and also function as water tide energy harvesting piezoelectric nanogenerators.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Van Dang Tran, Hong-Cuong Truong, Thanh Vinh Nguyen, Philippe Leclere, Thanh-Tung Duong, Thi Hang Bui, Van Quy Nguyen
Summary: The piezoelectric properties of PVDF and KBT electrospun composite nanofibers were studied for their potential application in Piezoelectric generator (PEG) devices. The PVDF-KBT composite exhibited significantly enhanced piezoelectric responses compared to pure PVDF, showcasing its potential as a sustainable energy solution for recharging portable electronic devices.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Guo-Yi Li, Jian Li, Zhao-Jian Li, Yu-Peng Zhang, Xiao Zhang, Zi-Jun Wang, Wen-Peng Han, Bin Sun, Yun-Ze Long, Hong-Di Zhang
Summary: A high-sensitivity piezoelectric sensor has been developed by epitaxial growing ZnO nanosheets on PVDF-HFP nanofibers, enabling precise monitoring of subtle motion changes. This sensor exhibits high sensitivity, short response time, excellent durability and stability, and can accurately detect motion changes in athletes to prevent injuries from overtraining.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Materials Science, Composites
Madeshwaran Sekkarapatti Ramasamy, Ashiqur Rahaman, Byungki Kim
Summary: This study reported a fabrication method for high-performance PVDF-based piezoelectric composites comprising PVDFNFs and OLABN, which showed significantly enhanced electrical response, Young's modulus, and ultimate tensile strength. The composites can achieve rapid piezoelectric outputs and a substantial increase in output power density.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Sunija Sukumaran, Piotr K. Szewczyk, Joanna Knapczyk-Korczak, Urszula Stachewicz
Summary: With the advancement in smart devices, the demand for piezoelectric polymers, specifically electrospun polyvinylidene fluoride (PVDF) fibers, has increased. Various methods including different solvents, conductive filler, and annealing were compared to enhance the piezoelectric properties of PVDF. The results showed that PVDF/rGO fibers in DMAc solvent exhibited the highest piezoelectric coefficient and power density, making them a promising material for energy harvesting applications.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Soroush Dashtizad, Parvin Alizadeh, Amin Yourdkhani
Summary: The study demonstrates that an increase in the BaTiO3 content leads to higher piezoelectric output voltage in PVDF-BaTiO3-Ag composite fibers, primarily attributed to an increase in the beta phase content and the presence of silver as a conductive phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Xiangxin Du, Zheng Zhou, Zhao Zhang, Liqin Yao, Qilong Zhang, Hui Yang
Summary: This study demonstrates the potential application of multi-layered piezoelectric fiber composites in flexible energy harvesting devices. The porous structure effectively enhances the overall polarization and surface bound charge density, resulting in a highly efficient electromechanical conversion. The PENG based on the composite fibers shows higher sensitivity and excellent flexibility compared to PENGs with other porous structures.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Materials Science, Multidisciplinary
Jieling Zhang, Tao Yang, Guo Tian, Boling Lan, Weili Deng, Lihua Tang, Yong Ao, Yue Sun, Wanghong Zeng, Xiarong Ren, Zhaoyu Li, Long Jin, Weiqing Yang
Summary: This article introduces spatially confined MXene/polyvinylidene fluoride (PVDF) nanofibers for piezoelectric applications, which can sense pressure and harvest energy simultaneously. The spatial confinement induces optimal alignment of PVDF dipoles and significantly enhances the piezoelectric performance. The voltage and current generated by the fabricated MXene/PVDF nanofiber piezoelectric devices are 3.97 times and 10.1 times higher than pure PVDF nanofibers, respectively. This research enables the development of nanofibers with excellent piezoelectric performance using a spatial confinement mechanism.
ADVANCED FIBER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Saptasree Bose, Jack Ryan Summers, Bhupendra B. Srivastava, Victoria Padilla-Gainza, Manuel Peredo, Carlos Mauricio Trevino De Leo, Bryan Hoke, Santosh K. Gupta, Karen Lozano
Summary: This study addresses the challenges of low upconversion luminescence efficiency and processing disadvantages of upconverting materials by developing polymer-based fiber membranes without adding external luminescent powders. The Yb3+ and Er3+ codoped PVDF nanofibers exhibited efficient upconversion luminescence emission under NIR illumination, showing potential for lighting and imaging applications.
Article
Chemistry, Multidisciplinary
Shiping Song, Yijun Li, Qi Wang, Chuhong Zhang
Summary: 3D printed piezoelectric devices show promise, but lack of high loaded piezoelectric composites is a key bottleneck. This work successfully developed a novel composite material and enhancement strategy for piezoelectric output through 3D structuring.
Article
Engineering, Biomedical
Cheng-Tang Pan, Karishma Dutt, Amit Kumar, Rahul Kumar, Cheng-Hsin Chuang, Yi-Ting Lo, Zhi-Hong Wen, Chien-Shu Wang, Shiao-Wei Kuo
Summary: In this study, a new PVDF/AgNP/MXene composite nanofiber film was successfully prepared using near-field electrospinning. The composite film exhibited high piezoelectric properties and showed exceptional performance in energy harvesting and powering light-emitting diodes.
INTERNATIONAL JOURNAL OF BIOPRINTING
(2023)
Article
Polymer Science
Oriretan Omosola, Dorina Magdalena Chipara, Mohammad Uddin, Karen Lozano, Mataz Alcoutlabi, Victoria Padilla, Mircea Chipara
Summary: Thermogravimetric analysis of polyethylene oxide, including both powder and nanofibers, was conducted using different theoretical models. A semiempirical method for estimating the sigmoid activation energy from thermal degradation was proposed and confirmed. The study showed that the sigmoid activation energy of PEO increased with heating rate, with differences observed between materials obtained from water and chloroform solutions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Cristobal Rodriguez, Victoria Padilla, Karen Lozano, Fariha Ahmad, Alejandra Chapa, Alexa Villarreal, Andrew McDonald, Luis Materon, Robert Gilkerson
Summary: This study demonstrates that combining natural bioactive compounds with biodegradable polymers can create an environment conducive to cell growth, with potential for natural active ingredients to be used as alternatives in wound dressings.
JOURNAL OF BIOACTIVE AND COMPATIBLE POLYMERS
(2022)
Article
Materials Science, Biomaterials
Victoria Padilla-Gainza, Heriberto Rodriguez-Tobias, Graciela Morales, Antonio Ledezma-Perez, Carmen Alvarado-Canche, Rail Loera-Valencia, Cristobal Rodriguez, Robert Gilkerson, Carlos Trevino De Leo, Karen Lozano
Summary: Scaffolds based on polymeric fibers have promising biomedical applications due to their similarity to extracellular matrices. The challenge lies in their susceptibility to pathogenic microorganisms. This study aimed to design antimicrobial and bioactive fibrous materials using poly(D, L-lactic acid) as the substrate. The incorporation of zinc oxide and hydroxyapatite nanoparticles led to improved antimicrobial properties and cell compatibility of the fiber scaffold, making it a promising candidate for bone applications.
BIOMATERIALS ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Saptasree Bose, Jack Ryan Summers, Bhupendra B. Srivastava, Victoria Padilla-Gainza, Manuel Peredo, Carlos Mauricio Trevino De Leo, Bryan Hoke, Santosh K. Gupta, Karen Lozano
Summary: This study addresses the challenges of low upconversion luminescence efficiency and processing disadvantages of upconverting materials by developing polymer-based fiber membranes without adding external luminescent powders. The Yb3+ and Er3+ codoped PVDF nanofibers exhibited efficient upconversion luminescence emission under NIR illumination, showing potential for lighting and imaging applications.
Article
Materials Science, Multidisciplinary
Jui Kharade, Horacio Vasquez, Karen Lozano
Summary: This study focuses on the development of self-powering devices using piezoelectric PVDF fibers. The research tested the piezoelectric properties of the fiber mats and found that the response increased with collector speed, showing potential for vibration energy harvesting. The produced fiber mats could be used as electrical generators, providing new possibilities for energy harvesting and storage.
EMERGENT MATERIALS
(2022)
Article
Polymer Science
Dorina M. Chipara, Alexandro Trevino, Karen Lozano, Bryan Hoke, Karen S. Martirosyan, Mircea Chipara
Summary: Nanocomposites were prepared by melt mixing polyvinylidene fluoride with various concentrations of magnetite. Multiple spectroscopy techniques were used to investigate these nanocomposites and the results demonstrated a strong interaction between the matrix and the nanofiller.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Ali Ashraf, Md Ashiqur Rahman, Fariha Rubaiya, Nazmul Islam, Karen Lozano
Summary: Forcespinning is a powerful technique for producing fiber systems with suitable properties. This study demonstrates that graphene-coated forcespinning nanofiber mats exhibit improved sensing and energy performance. The graphene-coated nanocomposites show enhanced sensitivity in temperature, vibration, and airflow sensing, and also function as water tide energy harvesting piezoelectric nanogenerators.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Composites
Veronica M. Serrato, Victoria Padilla, Daniel Jones, Sergio Herrera, Luis Campos, Ignacio Serrato, Heinrich Foltz, Karen Lozano
Summary: Vapor grown carbon nanofiber (VGCNF) reinforced polyvinylidene difluoride (PVDF) composites were developed and characterized in this study. The composites showed improved thermal stability and electrical conductivity due to the addition of carbon nanofibers. The study also demonstrated the electromagnetic interference shielding effectiveness (SE) of the developed films.
POLYMER COMPOSITES
(2023)
Review
Polymer Science
Saptasree Bose, Victoria Padilla, Alexandra Salinas, Fariha Ahmad, Timothy P. Lodge, Christopher J. Ellison, Karen Lozano
Summary: Nanofibers have unique properties that have attracted significant interest, such as high specific surface area, high aspect ratio, and spatial interconnectivity. Design strategies, including core-sheath, concentric layers, and particle distribution, are being used to prescribe the internal structure of nanofibers. This review provides a comprehensive overview of the design strategies being used to produce the next generation of nanofiber systems, discussing processing methods and their effects on the nano- and microstructure, as well as physico-chemical effects on fiber morphology.
Article
Pharmacology & Pharmacy
Vahid Reisi-Vanani, Samanesadat Hosseini, Ebrahim Soleiman-Dehkordi, Sahand Noaien Boroujeni, Mahour Farzan, Valentina Virginia Ebani, Mazaher Gholipourmalekabadi, Karen Lozano, Zahra Lorigooini
Summary: This study evaluated the synergistic effect of thymus essential oil and licorice extract on wound healing applications. The developed nanocomposite fibers exhibited antibacterial activity, promoted fibroblast proliferation, and facilitated wound healing.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Salahuddin Ahmed, Victoria M. Padilla-Gainza, Robert Gilkerson, Acharan Narula, Karen Lozano
Summary: Poly(lactic-co-glycolic) acid fiber membranes loaded with oleanolic acid (OA) were successfully fabricated using the Forcespinning technology. OA, a natural pentacyclic triterpenoid compound found in fruits and vegetables, has been widely recognized for its diverse biological activities. The incorporation of OA into the polymeric fiber membranes opens up promising applications in the field of transdermal drug delivery systems. The developed fiber membranes exhibited long and continuous fibers with rough surfaces, showed thermal stability, and had high drug loading efficiency (>80%).
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Salahuddin Ahmed, Megan Keniry, Narcedalia Anaya-Barbosa, Victoria Padilla, Md Noushad Javed, Robert Gilkerson, Acharan S. Narula, Eman Ibrahim, Karen Lozano
Summary: This study focuses on the fabrication, characterization, and anticancer properties of biocompatible and biodegradable composite nanofibers consisting of PVA, OM, and CA. The effects of varying concentrations of OM and CA on fiber diameter and molecular cross-linking are investigated. The developed nanofiber-based mats are characterized using various analytical techniques and show potential as a drug delivery system in anticancer applications.
MACROMOLECULAR BIOSCIENCE
(2023)
Review
Polymer Science
Shaik Merkatur Hakim Marjuban, Musfira Rahman, Syeda Sharmin Duza, Mohammad Boshir Ahmed, Dinesh K. Patel, Md Saifur Rahman, Karen Lozano
Summary: In the past decade, researchers have explored the potential of nano and microfiber scaffolds in wound healing, tissue regeneration, and skin protection. The centrifugal spinning technique has gained popularity for its ability to produce large quantities of fiber in a straightforward manner. This literature review discusses the process of fiber generation, the effects of fabrication parameters on fiber morphology, and provides an overview of the advancements in centrifugally spun polymeric fiber-based materials for tissue engineering applications.
Article
Chemistry, Multidisciplinary
Helio Ribeiro, Jose Jaime Taha-Tijerina, Ofelia Gomez, Ever Acosta, Gabriel M. Pinto, Lorena R. C. Moraes, Guilhermino J. M. Fechine, Ricardo J. E. Andrade, Jefferson Reinoza, Victoria Padilla, Karen Lozano
Summary: In this study, nanofluids based on vegetal oil with different weight percentages of carbon nanotubes (CNT), hexagonal boron nitride (h-BN), and a hybrid of both (h-BN@CNT) were produced. The effects of these nano-additives on the thermal conductivity and rheological properties of the nanofluids were investigated. The results showed that the fluids produced with 0.5 wt.% of the hybrid nanomaterials exhibited an increase in thermal conductivity of up to 39%. Furthermore, it was found that the presence of CNT affected the rheological properties of the fluid, while h-BN changed the fluid's Newtonian behavior.
Article
Nanoscience & Nanotechnology
Md Ashiqur Rahman, Fariha Rubaiya, Nazmul Islam, Karen Lozano, Ali Ashraf
Summary: This study investigates the sensing and energy generation performance of PVDF/PAni fiber mat systems made by the forcespinning method with and without graphene coating. The graphene-coated nanocomposites show improved output voltage and current performance, as well as better sensitivity and voltage generation for temperature and vibration sensing. The graphene-coated composite also shows potential as a water tide energy harvesting piezoelectric nanogenerator.
ACS APPLIED MATERIALS & INTERFACES
(2022)
