jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: S. Varadharajan | Kirthanashri S. Vasanthan | Prachi Agarwal
Source: 3D Printing and Additive Manufacturing (review, 2023-11-16)
Field: Materials Science — Polymers and Plastics

Application of Reversible Four-Dimensional Printing of Shape Memory Alloys and Shape Memory Polymers in Structural Engineering: A State-of-the-Art Review The rapid development and advancements in field of shape memory alloys (SMAA) has tremendously increased the progress in four-dimensional (4D) printing. The conventional 4D printing will require skilled manpower but utilization of reversibility aspect achieved using self adjusting external stimuli will eliminate the necessity of sophisticated devices and human intervention in 4D printing. The components created using reversible 4D printing can be reused after each recovery cycle that suits the current industry requirements. This review is divided into three sections: The first section starts with a detailed illustration of different mechanisms associated with SMAA and shape memory polymers SMPP along with an illustration of realistic 3D-printed SMAA and SMPP. The second section of this paper deals with the different methods of manufacture with the advantages and disadvantages of different types of SMAA. The third section deals with the mechanisms associated with SMPP, namely (1) Thermo-responsive mechanism, (2) Chemo-responsive mechanism, and (3) Photo-responsive mechanism along with a detailed insight into the aspect of repeatability and reversibility. The fourth section presents an exhaustive review of the application of SMAA and SMPP in civil engineering. The last section of this work throws light on the challenges faced in 4D reversible printing of SMAA and SMPP along with the potential solutions and presents directions for future research. Section (typography) ; Mechanism (biology) ; Computer science ; State (computer science) ; 3D printing ; Mechanical engineering ; Engineering Polymer composites and self-healing ; Advanced Materials and Mechanics ; Advanced Sensor and Energy Harvesting Materials
Authors: Pedro Cruz-Nova | Brenda Gibbens-Bandala | Alejandra Ancira-Cortez | Gerardo Ramírez-Nava | Clara Santos‐Cuevas | Myrna Luna‐Gutiérrez | Blanca Ocampo‐García
Source: Frontiers in Medicine (article, 2023-06-12)
Field: Materials Science — Biomaterials

Chemo-radiotherapy with 177Lu-PLGA(RGF)-CXCR4L for the targeted treatment of colorectal cancer Data obtained in this research justify additional preclinical safety trials and the clinical evaluation of <sup>177</sup>Lu-PLGA(RGF)-CXCR4L as a potential combined treatment of colorectal cancer. Medicine ; Colorectal cancer ; Cancer ; Cancer research ; PLGA ; Drug delivery ; In vivo ; Radiation therapy ; Oncology ; Pharmacology ; Internal medicine ; Nanotechnology ; Materials science ; Nanoparticle ; Biotechnology Nanoparticle-Based Drug Delivery ; Hepatocellular Carcinoma Treatment and Prognosis ; Cancer Cells and Metastasis
Authors: S. Athithya | K. P. Mohamed Jibri | S. Harish | Kunio Hayakawa | Yoshihiro Kubota | Hiroya Ikeda | Y. Hayakawa | M. Navaneethan | J. Archana
Source: AIP Advances (article, 2023-01-01)
Field: Materials Science — Materials Chemistry

Probing an enhanced anisotropy Seebeck coefficient and low thermal conductivity in polycrystalline Al doped SnSe nanostructure Recently, SnSe based thermoelectric materials attained much interest due to their environment friendly IV–VI semiconductor group. Herein, Al doped SnSe (Sn1−xAlxSe) specimens were prepared by combined ball milling and spark plasma sintering. High resolution transmission electron microscopy analysis of (Sn1−xAlxSe) nanostructure samples confirmed the existence of different crystal defects and dislocation induced by Al doping. Lower thermal conductivity (0.63 W/mK at 750 K) is observed for Sno.92Al0.08Se samples than pristine SnSe (1.14 W/mK at 750 K), which is mainly attributed to various crystal defects, such as lattice dislocation, stacking fault, grain boundary scattering, and excellent anharmonic bonding nature of SnSe. The maximum electrical conductivity is observed for the SAS-2 sample, which correlates well with the low activation energy of 0.20 eV. The minimal doping of Al (SAS-2) decoupled the strong interdependency of electrical and thermal transport properties, leading to a maximum ZT of 0.18 at 743 K. The Al doped SnSe (Sn1−xAlxSe) induced point defects in the sample, which provides a new strategy for waste heat recovery. Materials science ; Spark plasma sintering ; Grain boundary ; Seebeck coefficient ; Thermoelectric materials ; Thermal conductivity ; Doping ; Thermoelectric effect ; Crystallographic defect ; Condensed matter physics ; Wurtzite crystal structure ; Crystallite ; Nanostructure ; Analytical Chemistry (journal) ; Nanotechnology ; Optoelectronics ; Metallurgy ; Composite material ; Microstructure ; Chemistry Advanced Thermoelectric Materials and Devices ; Chalcogenide Semiconductor Thin Films ; Perovskite Materials and Applications
Authors: Junxia Liu | Tengfei Chao | Yingying Liu | Gong Chen | Yinan Zhang | Huihua Xiong
Source: Pharmaceutics (review, 2023-06-10)
Field: Chemistry — Organic Chemistry

Heterocyclic Molecular Targeted Drugs and Nanomedicines for Cancer: Recent Advances and Challenges Cancer is a top global public health concern. At present, molecular targeted therapy has emerged as one of the main therapies for cancer, with high efficacy and safety. The medical world continues to struggle with the development of efficient, extremely selective, and low-toxicity anticancer medications. Heterocyclic scaffolds based on the molecular structure of tumor therapeutic targets are widely used in anticancer drug design. In addition, a revolution in medicine has been brought on by the quick advancement of nanotechnology. Many nanomedicines have taken targeted cancer therapy to a new level. In this review, we highlight heterocyclic molecular-targeted drugs as well as heterocyclic-associated nanomedicines in cancer. Cancer ; Medicine ; Cancer therapy ; Targeted therapy ; Drug ; Nanomedicine ; Pharmacology ; Nanotechnology ; Internal medicine ; Materials science Synthesis and biological activity ; Click Chemistry and Applications ; Cancer Mechanisms and Therapy
Authors: Anu Seng Chaupoo | Arti Dhakad | Shreedhar Beese | Avdhesh Kumar | P Kiran Kumar | Shivam Kumar Pandey | Akshay Kumar Kurdekar
Source: International Journal of Environment and Climate Change (article, 2023-11-18)
Field: Materials Science — Materials Chemistry

Transforming Horticulture: The Influence of Nanotechnology on Crop Enhancement Nanotechnology, a field of science and engineering focused on manipulating matter at the nanoscale, has garnered significant attention for its transformative potential across various industries. At the nanometer level, materials exhibit unique properties and behaviors, making it possible to engineer novel solutions with precision and efficiency. Nanotechnology finds applications in diverse areas, from medicine and electronics to energy and environmental remediation. Its ability to create nanoscale structures, devices, and materials has led to groundbreaking innovations, such as drug delivery systems for targeted therapies, ultra-efficient solar cells, and advanced water purification technologies. However, the rapid development of nanotechnology also raises important ethical, safety, and regulatory considerations that require careful attention. As nanotechnology continues to advance, it promises to reshape industries, enhance scientific understanding, and address some of the world's most pressing challenges.&#x0D; Nanotechnology ; Transformative learning ; Applications of nanotechnology ; Societal impact of nanotechnology ; Engineering ; Emerging technologies ; Engineering ethics ; Materials science ; Sociology Nanoparticles: synthesis and applications ; Nanotechnology research and applications
Authors: Zifan Wang | Yunlan Zhang | Konstantinos A. Liogas | Jingwei Chen | G. Vaughan | Radim Kocich | Lenka Kunčická | Fatih Uzun | Zhong You | Alexander M. Korsunsky
Source: Materials Science and Engineering A (article, 2023-06-01)
Field: Materials Science — Materials Chemistry

In situ synchrotron X-ray diffraction analysis of two-way shape memory effect in Nitinol Despite the fact that the Two-Way Shape Memory Effect (TWSME) has been demonstrated in most Shape Memory Alloys, the effective application of this unique functional behaviour is hindered by the lack of a proper training methodology and understanding of its mechanisms. In this study, a novel training routine has been established together with a home-designed device, enabling TWSME of customised spline curvature to be produced. An in situ high energy synchrotron X-ray diffraction experiment has been performed on Nitinol, followed by comprehensive analysis to reveal the micromechanics of TWSME. Multiple mainstream hypotheses have been examined. The important findings are: (1) The training process has negligible influence on the texture of parent phase; (2) The preferred variant of the B19’ phase exhibits tension/compression asymmetry in TWSME; (3) (100) compound twin is the preferred deformation mode for compression TWSME; (4) The mesoscale residual strain field is the dominant factor that induces TWSME; (5) Lattice defects (dislocations) are spatially rearranged after training; (6) Compression TWSME training retards the B2 to B19’ transformation, whilst tension has the opposite effect. The implications of these findings are further discussed. Materials science ; Shape-memory alloy ; Synchrotron ; Diffraction ; Compression (physics) ; Composite material ; Optics Shape Memory Alloy Transformations ; Ferroelectric and Piezoelectric Materials ; X-ray Diffraction in Crystallography
Authors: Jinrong Liu | Mika H. Sipponen
Source: iScience (article, 2023-09-25)
Field: Materials Science — Materials Chemistry

Ag-lignin hybrid nanoparticles for high-performance solar absorption in photothermal antibacterial chitosan films There is an urgent need for antimicrobial films based on sustainable resources and production methods. In this study, we present a bio-based nanocomposite film composed of chitosan (∼60 wt %), lignin nanoparticles (LNPs, ∼40 wt %), a small amount of glutaraldehyde (1.5 wt %), and a trace level of silver nanoparticles (AgNPs, 0.072 wt %). The uniform dispersion with LNPs prevented aggregation of metallic silver, resulting in small (diameter 3.3 nm) AgNPs. The nanocomposite film absorbs 89% of radiation across the entire solar spectrum and exhibits a remarkable photothermally triggered antibacterial effect, which is further enhanced by the dark color of lignin. Under simulated solar light illumination, the nanocomposite films demonstrated a significant reduction in viable <i>Escherichia coli</i> count compared to control scenarios. The potential applications of these nanocomposites extend to sunlight-activated antimicrobial films and coatings, addressing the growing demand for sustainable and effective antimicrobial materials. Nanocomposite ; Lignin ; Photothermal therapy ; Chitosan ; Silver nanoparticle ; Nanoparticle ; Materials science ; Antimicrobial ; Nanotechnology ; Absorption (acoustics) ; Chemical engineering ; Chemistry ; Composite material ; Organic chemistry Nanoparticles: synthesis and applications ; TiO2 Photocatalysis and Solar Cells ; Advanced Photocatalysis Techniques
Authors: Jiao Wu | Liu Quan-xiao | Peng Gao | Jigang Wang | Yuansheng Qi | Zhenjun Li | Junming Li | Tao Jiang
Source: Nanomaterials (article, 2023-08-30)
Field: Materials Science — Materials Chemistry

Design, Synthesis, and Characterization of a Novel Blue-Green Long Afterglow BaYAl3O7:Eu2+, Nd3+ Phosphor and Its Anti-Counterfeiting Application Herein, a series of novel long afterglow nanophosphors BaYAl<sub>3</sub>O<sub>7</sub>:Eu<sup>2</sup><sup>+</sup>, Nd<sup>3</sup><sup>+</sup> was synthesized by the combustion method. The investigation encompassed the characterization of X-ray diffraction, morphology, chemical valence, elemental composition, and photoluminescence behavior of BaYAl<sub>3</sub>O<sub>7</sub>:Eu<sup>2</sup>+ and BaYAl<sub>3</sub>O<sub>7</sub>:Eu<sup>2</sup><sup>+</sup>, Nd<sup>3</sup><sup>+</sup> nanoparticles. Under 365 nm excitation, BaYAl<sub>3</sub>O<sub>7</sub>:Eu<sup>2</sup><sup>+</sup> and BaYAl<sub>3</sub>O<sub>7</sub>:Eu<sup>2</sup><sup>+</sup>, Nd<sup>3</sup><sup>+</sup> show emission bands centered at 497 nm and 492 nm, which are attributed to the 4f<sup>6</sup>5d→4f<sup>7</sup> transition of Eu<sup>2</sup><sup>+</sup> ions. The optimal samples of BaYAl<sub>3</sub>O<sub>7</sub>:0.03Eu<sup>2</sup><sup>+</sup> and BaYAl<sub>3</sub>O<sub>7</sub>:0.03Eu<sup>2</sup><sup>+</sup>, 0.02Nd<sup>3</sup><sup>+</sup> have average fluorescence lifetimes of 850 ns and 1149 ns, respectively. The co-doping of Nd<sup>3</sup>+ ions as the trap centers produced long afterglow luminescence properties, and the afterglow time could reach up to 8 min. Furthermore, the fluorescent powder can be mixed with polyacrylic acid to prepare anti-counterfeiting inks; a clover pattern and snowflake pattern have been successfully printed using screen printing technology, proving its potential application in the field of anti-counterfeiting. Afterglow ; Phosphor ; Photoluminescence ; Luminescence ; Materials science ; Doping ; Fluorescence ; Ion ; Analytical Chemistry (journal) ; Polyacrylic acid ; Valence (chemistry) ; Characterization (materials science) ; Nanotechnology ; Optoelectronics ; Chemistry ; Optics ; Physics ; Polymer ; Composite material Luminescence Properties of Advanced Materials ; Luminescence and Fluorescent Materials ; Perovskite Materials and Applications
Authors: Yonglong Chang | Qinling Ou | Chao Zhou | Kechao Nie | Haixia Yan | Jinhui Liu | Jing Li | Sifang Zhang
Source: Frontiers in Pharmacology (article, 2023-09-14)
Field: Materials Science — Biomaterials

Mapping the intellectual structure and landscape of nano-drug delivery systems in colorectal cancer <b>Background:</b> Colorectal cancer (CRC) is a prevalent malignancy affecting the digestive tract, and its incidence has been steadily rising over the years. Surgery remains the primary treatment modality for advanced colorectal cancer, complemented by chemotherapy. The development of drug resistance to chemotherapy is a significant contributor to treatment failure in colorectal cancer. Nanodrug delivery systems (NDDS) can significantly improve the delivery and efficacy of antitumor drugs in multiple ways. However, there is a lack of visualization of NDDS research structures and research hotspots in the field of colorectal cancer, and the elaboration of potential research areas remains to be discovered. <b>Objective:</b> To comprehensively explore the current research status and development trend of NDDS in CRC research. <b>Methods:</b> Bibliometric analysis of articles and reviews on NDDS for CRC published between 2002 and 2022 using tools including CiteSpace, VOSviewer, R-bibliometrix, and Microsoft Excel was performed. <b>Results:</b> A total of 1866 publications authored by 9,870 individuals affiliated with 6,126 institutions across 293 countries/regions were included in the analysis. These publications appeared in 456 journals. Abnous Khalil has the highest number of publications in this field. The most published journals are the International Journal of Nanomedicine, International Journal of Pharmaceutics, and Biomaterials. Notably, the Journal of Controlled Release has the highest citation count and the third-highest H-index. Thematic analysis identified "inflammatory bowel disease"," "oral drug delivery," and "ulcerative colitis" as areas requiring further development. Keyword analysis revealed that "ulcerative colitis," "exosomes," and "as1411"have emerged as keywords within the last 2 years. These emerging keywords may become the focal points of future research. <b>Conclusion:</b> Our findings reveal the current research landscape and intellectual structure of NDDS in CRC research which helps researchers understand the research trends and hot spots in this field. Medicine ; Colorectal cancer ; Drug delivery ; Cancer ; Oncology ; Internal medicine Nanoparticle-Based Drug Delivery ; Nanoplatforms for cancer theranostics ; Nanoparticles: synthesis and applications
Authors: Wenyang Zhao | Zeyang Ding | Zhiqiang Yang | Tong Lu | Bing Yang | Shimei Jiang
Source: Chemistry - A European Journal (article, 2023-11-29)
Field: Materials Science — Materials Chemistry

Remarkable Off–On Tunable Solid‐State Luminescence by the Regulation of Pyrene Dimer It is always a challenge to achieve "off-on" luminescent switch by regulating non-covalent interactions. Herein, we report a unique strategy for constructing high performance "off-on" tunable luminescent materials utilizing a novel molecule (TFPA) consist of pyrene and cyanostilbene. The pristine crystal of TFPA is almost non-emissive. Upon grinding/UV irradiation, an obvious luminescence enhancement is observed. Theoretical and experimental results revealed the underlying mechanism of this intriguing "off-on" switching behavior. The non-emissive crystal consists of ordered H-aggregates, with adjacent two molecules stacked in an anti-parallel manner and no overlapped area in pyrene moieties. When external force is applied by grinding or internal force is introduced through the photoisomerization, the dimer structures are facilitated with shorter intermolecular distances and better overlapping of pyrene moieties. In addition, the "on" state can recover to "off" state under thermal annealing, showing good reversibility and applicability in intelligence material. The present results promote an in-depth insight between packing structure and photophysical property, and offer an effective strategy for the construction of luminescence "off-on" switching materials, toward the development of stimuli-responsive luminescent materials for anti-counterfeiting. Luminescence ; Pyrene ; Dimer ; Materials science ; Molecule ; Photoisomerization ; Photochemistry ; Intermolecular force ; Grinding ; Crystal (programming language) ; Solid-state ; Nanotechnology ; Chemical physics ; Optoelectronics ; Chemistry ; Isomerization ; Organic chemistry ; Computer science ; Physical chemistry Luminescence and Fluorescent Materials ; Molecular Sensors and Ion Detection ; Supramolecular Chemistry and Complexes
Authors: Tamadur Al Baraghtheh | Alexander Hermann | Arman Shojaei | Regine Willumeit‐Römer | Christian J. Cyron | Berit Zeller‐Plumhoff
Source: Corrosion and Materials Degradation (article, 2023-03-31)
Field: Materials Science — Biomaterials

Utilizing Computational Modelling to Bridge the Gap between In Vivo and In Vitro Degradation Rates for Mg-xGd Implants Magnesium (Mg) and its alloys are promising materials for temporary bone implants due to their mechanical properties and biocompatibility. The most challenging aspect of Mg-based implants involves adapting the degradation rate to the human body, which requires extensive in vitro and in vivo testing. Given that in vivo tests are significantly more labour-intensive than in vitro and ethics prohibit direct experiments on animals or humans, attempts are commonly undertaken to infer conclusions on in vivo degradation behavior from in vitro experiments. However, there is a wide gap between these tests, and in vitro testing is often a poor predictor of in vivo outcomes. In the development of biodegradable Mg-based implants, considerable efforts are being made to reduce the overall time and cost of in vitro and in vivo testing. Finding a suitable alternative to predict the degradation of Mg alloys, however, remains challenging. We present computational modelling as a possible alternative to bridge the gap between in vitro and in vivo testing, thus reducing overall cost, duration and number of experiments. However, traditional modelling approaches for complex biodegradable systems are still rather time-consuming and require a clear definition of the relations between input parameters and the model result. In this study, Kriging surrogate models based on the peridynamic in vitro degradation model were developed to simulate the degradation behavior for two main alloys, Mg-5Gd and Mg-10Gd, for both in vitro and in vivo cases. Using Kriging surrogate models, the simulation parameters were calibrated to the volume loss data from in vitro and in vivo experiments. In vivo degradation of magnesium has one order of magnitude higher apparent diffusion coefficients than in vitro degradation, thus yielding the higher volume loss observed in vivo than in vitro. On the basis of the diffusivity of the Mg2+ ions modeled under in vitro degradation, Kriging surrogate models were able to simulate the in vivo degradation behavior of Mg-xGd with a ratio between 0.46 and 0.5, indicating that the surrogate-modelling approach is able to bridge the gap between in vitro and in vivo degradation rates for Mg-xGd implants. In vivo ; In vitro ; Degradation (telecommunications) ; Biomedical engineering ; Materials science ; Bridge (graph theory) ; Computer science ; Biochemical engineering ; Chemistry ; Medicine ; Biology ; Engineering ; Surgery ; Biotechnology ; Biochemistry Magnesium Alloys: Properties and Applications ; Aluminum Alloys Composites Properties ; Aluminum Alloy Microstructure Properties
Authors: Tingpeng Luo | Felix A. Hahl | Julia Langer | V. Cimalla | Lukas Lindner | Xavier Vidal | Marko Haertelt | Rémi Blinder | Shinobu Onoda | Takeshi Ohshima | Jan Jeske
Source: Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences (article, 2023-12-04)
Field: Materials Science — Materials Chemistry

Absorption and birefringence study for reduced optical losses in diamond with high nitrogen-vacancy concentration The use of diamond colour centres such as the nitrogen-vacancy (NV) centre is increasingly enabling quantum sensing and computing applications. Novel concepts like cavity coupling and readout, laser-threshold magnetometry and multi-pass geometries allow significantly improved sensitivity and performance via increased signals and strong light fields. Enabling material properties for these techniques and their further improvements are low optical material losses via optical absorption of signal light and low birefringence. Here, we study systematically the behaviour of absorption around 700 nm and birefringence with increasing nitrogen- and NV-doping, as well as their behaviour during NV creation via diamond growth, electron beam irradiation and annealing treatments. Absorption correlates with increased nitrogen doping yet substitutional nitrogen does not seem to be the direct absorber. Birefringence reduces with increasing nitrogen doping. We identify multiple crystal defect concentrations via absorption spectroscopy and their changes during the material processing steps and thus identify potential causes of absorption and birefringence as well as strategies to fabricate chemical vapour deposition diamonds with high NV density yet low absorption and low birefringence. This article is part of the Theo Murphy meeting issue 'Diamond for quantum applications'. Diamond ; Birefringence ; Vacancy defect ; Nitrogen ; Materials science ; Absorption (acoustics) ; Analytical Chemistry (journal) ; Optics ; Optoelectronics ; Molecular physics ; Chemistry ; Crystallography ; Composite material ; Physics ; Environmental chemistry ; Organic chemistry Diamond and Carbon-based Materials Research ; Advanced Fiber Laser Technologies ; Nonlinear Optical Materials Studies