jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Carlos Benitez‐Martin | José Manuel Marín‐Beloqui | Juan T. López Navarrete | Juan Casado | Francisco Nájera | Ezequiel Pérez‐Inestrosa
Source: Advanced Materials (article, 2025-09-13)
Field: Materials Science — Materials Chemistry

Counterintuitive Fluorescence Blue Shift in Symmetry Breaking Dicationic Bis(indolium) with Two‐Photon Absorption Properties for NIR Living Cell Imaging Two-photon absorption (2PA) has become a cornerstone for bioimaging, enabling deeper tissue penetration while minimizing photodamage. Recently, the correlation between 2PA and excited-state symmetry breaking (ES-SB) has been probed. Typically, the first hallmark of ES-SB is a red shift in fluorescence with increasing solvent polarity. Herein, water-soluble bis(indolium) dyes, synthesized in only one step are reported, that exhibit remarkable 2PA performance, coupled to the ES-SB process, displaying a counterintuitive fluorescence blue shift in polar solvents. The relationship between their chemical structure and the extent of the ES-SB and 2PA properties is investigated via steady-state optical spectroscopies and transient absorption spectroscopy (TAS). The unusual blue shift is ascribed to their dicationic nature, leading to an uneven stabilization of the ground and ES-SB excited states in polar environments due to inefficient excited state solvation and positive charge confinement. These compounds also offer specific mitochondrial staining of living HeLa cells, performing at the level of more complex commercial mitochondria markers. Herein, a novel family of dicationic dyes are introduced with robust 2PA properties and practical use in bioimaging and provide connections between their dication quadrupolar nature, which imparts larger water solubility, 2PA performance, and ES-SB, which improving fluorescence properties and bioimaging microscopy detection and resolution. Fluorescence ; Excited state ; Absorption (acoustics) ; Raman spectroscopy ; Dication ; Solvation ; Fluorescence-lifetime imaging microscopy ; Microscopy ; Two-photon absorption Photochromic and Fluorescence Chemistry ; Nonlinear Optical Materials Studies ; Luminescence and Fluorescent Materials
Authors: Thor Hvid-Olsen | Christina Hoegfeldt | Amit Chanda | Alessandro Palliotto | Anshu Gupta | Daesung Park | Thomas Sand Jespersen | Felix Trier
Source: Journal of Applied Physics (article, 2025-09-25)
Field: Materials Science — Materials Chemistry

Leveraging high fluence and low pressure for pulsed laser deposition of high-mobility γ-Al2O3/SrTiO3 heterostructure growth High-mobility oxide heterostructures could be applied for high-frequency devices, transparent conductors, and spin–orbit logic devices. SrTiO3 is one of the most studied oxide substrate materials for heterostructures. To date, the highest SrTiO3-based charge carrier mobility at 2 K was measured in the interfacial two-dimensional electron gas (2DEG) of γ-Al2O3/SrTiO3. The formation mechanism and the origin of the high electron mobility are not yet fully understood. This investigation presents a successful growth protocol to synthesize high-mobility γ-Al2O3/SrTiO3 interfaces, and a description of the underlying growth optimization. Furthermore, indicative features of high-mobility γ-Al2O3/SrTiO3, including the room-temperature sheet resistance, are presented. Signs of epitaxial and crystalline growth are found in a high-mobility sample (μ10K=1.6×104 cm2/V s). Outlining the growth mechanisms and comparing 40 samples, indicates that low pressure (P≈1×10−6 mbar) is essential for high-mobility γ-Al2O3/SrTiO3 interfaces. γ-Al2O3 having single-element cations allows higher laser fluences during growth, compared to thin films with multi-element cations such as LaAlO3, without causing stoichiometric imbalances. Pulsed laser deposition ; Heterojunction ; Fluence ; Thin film ; Stoichiometry ; Epitaxy ; Substrate (aquarium) Electronic and Structural Properties of Oxides ; Semiconductor materials and devices ; Magnetic and transport properties of perovskites and related materials
Authors: Blanca Gladiana Beltrán Piña | Eduardo Santellano‐Estrada | Jorge Octavio Acosta-Montes | Cardona-Mejía Mariana | Aguilar-Maldonado Paulina | Chávez-Calderón Adriana
Source: Foods (article, 2025-10-17)
Field: Chemistry — Analytical Chemistry

Assessment of Heavy Metals in Mexican Dietary Supplements Using Total X-Ray Fluorescence Spectrometry and Health Risk Evaluation This study used Total X-ray Fluorescence Spectrometry (TXRF) to analyze toxic heavy metals, specifically lead (Pb), arsenic (As), and chromium (Cr), in 45 dietary supplement samples consumed by the Mexican population. A health risk assessment was performed using the Target Hazard Quotient (THQ), Hazard Index (HI), and Cumulative Cancer Risk (CCR). The mean concentrations of Pb, Cr, and As were found to be 1.99 ± 0.13, 26.88 ± 0.23, and 2.39 ± 0.11 mg/kg, respectively. For Pb, 80% of dietary supplements showed low EDIs compared to the reference value of 1.08 × 10<sup>-4</sup> mg/Kg bw/day set by the FDA. For Cr, 100% of the analyzed products had EDIs below the limit of 0.3 mg/Kg bw/day established by EFSA. Additionally, some dietary supplements of animal origin had EDIs exceeding the reference value of 6 × 10<sup>-5</sup> mg/kg bw/day set by the Integrated Risk System and EFSA for daily arsenic intake. When evaluating the variables THQ_Pb, THQ_Cr, and THQ_As using mean comparison tests to determine whether they exceeded the reference value of 1, we found that, in general, the available statistical evidence is insufficient (<i>p</i> > 0.05) to conclusively state that the dietary supplements under review surpass this reference parameter. Regarding HI values, the Animal and Vegetable category showed higher values than 1. All dietary supplements had CCR values in ranges greater than 1 × 10<sup>-4</sup>, indicating a probability of an individual developing cancer over their lifetime due to metal exposure. Effectively communicating these risks to consumers is crucial for promoting informed choices and improving public health. Arsenic ; Hazard quotient ; Risk assessment ; Reference dose ; Dietary supplement ; Hazard ; Heavy metals ; Dietary Reference Intake ; Health risk assessment Heavy Metals in Plants ; Heavy metals in environment ; Heavy Metal Exposure and Toxicity
Authors: Weijian Zhang | Lechun Deng | Tengxun Yang | Fa Luo | Shifeng Wen | Yun Tang | Hongjing Wu | Qiang Chen
Source: Small Science (review, 2025-10-21)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Synergistic Design of Multicomponent Carbon Fillers and Structures for Emi Shielding Rubbers With the rapid development of highly integrated electronic devices, electromagnetic interference leakage through assembly gaps has become a critical challenge. Conductive rubber, combining electrical conductivity and elastic compressibility, is widely recognized as a core material for achieving electromagnetic compatibility. Carbon-based conductive rubbers are attractive for their lightweight and corrosion resistance, but they face the critical bottleneck of achieving high shielding efficiency at low filler loadings. To address this issue, research has shifted from single-component carbon fillers toward multicomponent synergistic systems and structural designs. This review systematically classifies synergistic systems into carbon-carbon, carbon-metal, and carbon-magnetic types, highlighting their conductive network architectures, shielding mechanisms, and performance trade-offs. It further emphasizes the coupled optimization between filler systems and rubber structures, which enables significant improvements in shielding effectiveness. Finally, the review outlines future directions, including service reliability, integrated structural-functional design, intelligent responsive materials, and multifunctional sustainable development, providing guidance for the advancement of high-performance carbon-based conductive rubbers. Electromagnetic shielding ; Electrical conductor ; EMI ; Electromagnetic interference ; Filler (materials) ; Natural rubber ; Bottleneck ; Leakage (economics) Electromagnetic wave absorption materials ; Dielectric materials and actuators ; Fiber-reinforced polymer composites
Authors: Yuting Wu | Hancheng Zhu | Zhigao Huang | Hao Zhang | Yinjuan Ren | Hua Shen | Y. H. Wu | Yue Wang
Source: Science Advances (article, 2025-12-10)
Field: Materials Science — Materials Chemistry

Unlocking megawatt-peak-power laser emission with colloidal quantum dots Output power of a laser device critically defines the application prospects. Colloidal quantum dots (QDs) have emerged as auspicious laser media; however, the exclusively low-power emission obscures the practical deployment. Here, we resolve this challenge by designing an architecture of QD laser with unprecedented peak powers in megawatt regime. The achievement is enabled by integrating the QDs with exceptional gain metrics with a seed-amplifier laser structure. Transient spectroscopy and theoretical simulation reveal that the narrow emission linewidth and large biexciton binding energy of the QDs act synergistically to enable an enhanced gain performance with submonoexcitonic threshold and record high-saturated gain cross section. A Littman-Metcalf cavity is designed to deliver the continuously tunable laser emission, and the synchronous amplification reaches the megawatt output. The high-power QD laser exhibits high spatial coherence, linear polarization, and operational endurance, which has proved effective as the pump source for spectroscopic research. Laser linewidth ; Laser ; Quantum dot ; Amplified spontaneous emission ; Quantum dot laser ; Active laser medium ; Biexciton ; Ultrafast laser spectroscopy ; Laser power scaling ; Injection seeder Quantum Dots Synthesis And Properties ; Semiconductor Quantum Structures and Devices ; Strong Light-Matter Interactions
Authors: Tomas Fullana | Stéphane Zaleski | Gustav Amberg
Source: Physical review. E (article, 2025-08-21)
Field: Materials Science — Materials Chemistry

Mass diffusion and bending in dynamic wetting by phase-field and sharp-interface models Dynamic wetting poses a well-known challenge in classical sharp-interface formulation as the no-slip wall condition leads to a contact line singularity that is typically regularized with a Navier boundary condition, often requiring empirical fitting for the slip length. On the other hand, this paradox does not appear in phase-field models as the contact line moves through diffusive mass transport. In this work, we present a toy model that accounts for mass diffusion at the contact line within a sharp-interface framework. This model is based on a theoretical relation derived from the Cahn-Hilliard equations, which links the total diffusive mass transport to the curvature at the wall. From an estimate of the chemical potential on a curved interface, we obtain an expression for the width of the highly curved region δ and the apparent angle. In the sharp-interface model, we then introduce a fictitious boundary, displaced by a distance δ into the domain, where a Navier boundary condition is applied along a dynamic apparent contact angle that accounts for the local interface bending. The robustness of the model is assessed by comparing the toy model results with standard phase-field ones on two cases: the steady state profiles of a liquid bridge between two plates moving in opposite directions and the transient behaviors of a drop spreading on a solid with a prescribed equilibrium angle. This offers a practical and efficient alternative to solve contact line problems at lower cost in a sharp-interface framework with input parameters from phase-field models. Curvature ; Boundary value problem ; Slip (aerodynamics) ; Wetting ; Singularity ; Robustness (evolution) ; Classification of discontinuities ; Contact angle ; Conservation of mass Solidification and crystal growth phenomena ; Fluid Dynamics and Thin Films ; Fluid Dynamics and Heat Transfer
Authors: Alexandra Muntiu | Federica Vincenzoni | Diana Valeria Rossetti | Andrea Urbani | Giuseppe La Rocca | Alessio Albanese | Edoardo Mazzucchi | Alessandro Olivi | Giovanni Sabatino | Claudia Desiderio
Source: International Journal of Molecular Sciences (article, 2025-06-24)
Field: Chemistry — Spectroscopy

Proteomic Analysis of the Low Molecular Mass Fraction of Newly Diagnosed and Recurrent Glioblastoma CUSA Fluid: A Pilot Investigation of the Peptidomic Profile Glioblastoma multiforme (GBM) is a highly aggressive, treatment-resistant grade IV brain tumor with poor prognosis that grows rapidly and invades surrounding tissues, complicating surgery and frequently recurring. Although the crucial role of endogenous peptides has been highlighted for several tumors, the specific peptidomic profile of GBM remains unexplored to date. This study aimed to perform a preliminary characterization of the low molecular mass proteome fraction of Cavitron Ultrasonic Surgical Aspirator (CUSA) fluid collected from different tumor zones, i.e., the core and tumor periphery of newly diagnosed (ND) and recurrent (R) GBM. The samples, pooled by tumor type and collection zone, were centrifuged through molecular cut-off filter devices to collect the non-retained fraction of the proteome <10 kDa for direct full-length LC-MS analysis. A total of 40 and 24 peptides, fragments of 32 and 18 proteins, were marked as ND and R GBM COREs, respectively, while 132 peptides, fragments of 46 precursor proteins, were identified as common and included proteins which were cancer-related or involved in GBM pathophysiology. Besides providing a preliminary overview of the unexplored peptidome of GBM, this pilot study confirms peptidomics as a promising tool to discover potential GBM biomarkers in the perspective of clinical applications increasingly oriented towards a precision medicine approach. Data are available via ProteomeXchange with the identifier PXD060807. Proteome ; Glioblastoma ; Proteomics ; Biology ; Computational biology ; Cancer ; Cancer research ; Bioinformatics ; Pathology ; Medicine ; Gene ; Biochemistry ; Genetics Advanced Proteomics Techniques and Applications ; Genomics and Phylogenetic Studies ; RNA modifications and cancer
Authors: F.A. Balogun
Source: SSRN Electronic Journal (preprint, 2025-01-01)
Field: Materials Science — Materials Chemistry

Investigating HCCI Engine Operating Parameters Under the Simultaneous Dual Fueling of Ammonia and Hydrogen Based on Detailed Chemical Kinetics Modelling Homogeneous charge compression ignition ; Kinetics ; Dual (grammatical number) ; Ammonia ; Hydrogen ; Automotive engineering ; Chemistry ; Environmental science ; Combustion ; Engineering ; Physics ; Physical chemistry ; Organic chemistry Catalytic Processes in Materials Science ; Advanced Combustion Engine Technologies ; Industrial Gas Emission Control
Authors: Óscar Múñoz | Alfonso Torres | A. Morales–Sánchez | Luis Hernández-Martínez | José Alberto Luna López | Karim Monfil Leyva | Javier Flores Méndez | Gustavo M. Minquiz | Ricardo Jiménez | Mario Moreno
Source: Inorganics (article, 2025-04-20)
Field: Materials Science — Polymers and Plastics

Uncooled Microbolometers Based on Nitrogen-Doped Hydrogenated Amorphous Silicon-Germanium (a-SiGe:H,N) An uncooled microbolometer is a thermal sensor consisting of a membrane suspended from the substrate to provide thermal insulation. Typically, the membrane is composed of a stack of three films integrated by a supporting film, an IR sensing film, and an IR absorbing film. However, the above increases the thickness of the device and affects its mechanical stability and thermal mass, thereby reducing its performance. One solution is to use a single film as a membrane with both IR sensing and IR absorbing properties. In this regard, this work presents the fabrication and evaluation of uncooled microbolometers using nitrogen-doped hydrogenated amorphous silicon-germanium (a-SiGe:H,N) as a single IR-absorber/IR sensing membrane. The films were deposited via low frequency Plasma Enhanced Chemical Vapor Deposition (PECVD) at 200 °C. Three microbolometer configurations were fabricated using a-SiGe:H,N films deposited from a SiH4, GeH4, N2, and H2 gas mixture with different SiH4 and GeH4 flow rates and, consequently, with different properties, such as temperature coefficient of resistance (TCR) and conductivity at room temperature. The microbolometer that exhibited the best performance achieved a voltage responsivity of 7.26 × 105 V/W and a NETD of 22.35 mK at 140 Hz, which is comparable to state-of-the-art uncooled infrared (IR) sensors. These results confirm that the optimization of the deposition parameters of the a-SiGe:H,N films significantly affects the microbolometers final performance, enabling an optimal balance between thermal sensitivity (TCR) and conductivity. Materials science ; Germanium ; Doping ; Silicon-germanium ; Amorphous silicon ; Optoelectronics ; Amorphous solid ; Silicon ; Crystalline silicon ; Chemistry ; Crystallography Transition Metal Oxide Nanomaterials ; Infrared Thermography in Medicine ; Thermography and Photoacoustic Techniques
Authors: Siqi Jiang | Renjun Du | Jiawei Jiang | Gan Liu | Jiabei Huang | Yu Du | Yaqing Han | Jingkuan Xiao | Di Zhang | Fuzhuo Lian | Wanting Xu | Siqin Wang | Lei Qiao | Kenji Watanabe | Takashi Taniguchi | Xiaoxiang Xi | Wei Ren | Baigeng Wang | Alexander S. Mayorov | Kai Chang | Hongxin Yang | Lei Wang | Geliang Yu
Source: Nature Communications (article, 2025-07-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

The interplay of ferroelectricity and magneto-transport in non-magnetic moiré superlattices The coupling of ferroelectricity and magnetic order provides rich tunability for engineering material properties and demonstrates great potential for uncovering novel quantum phenomena and multifunctional devices. Here, we report interfacial ferroelectricity in moiré superlattices constructed from graphene and hexagonal boron nitride. We observe ferroelectric polarization in an across-layer moiré superlattice with an intercalated layer, demonstrating a remnant polarization comparable to its non-intercalated counterpart. Remarkably, we reveal a magnetic-field enhancement of ferroelectric polarization that persists up to room temperature, showcasing an unconventional amplification of ferroelectricity in materials lacking magnetic elements. This phenomenon, consistent across devices with varying layer configurations, arises purely from electronic rather than ionic contributions. Furthermore, the ferroelectric polarization in turn modulates quantum transport characteristics, suppressing Shubnikov-de Haas oscillations and altering quantum Hall states in polarized phases. This interplay between ferroelectricity and magneto-transport in non-magnetic materials is crucial for exploring magnetoelectric effects and advancing two-dimensional memory and logic applications. Superlattice ; Moiré pattern ; Condensed matter physics ; Magneto ; Ferroelectricity ; Materials science ; Physics ; Optics ; Quantum mechanics ; Optoelectronics ; Magnet Multiferroics and related materials ; Ferroelectric and Piezoelectric Materials ; Advanced Condensed Matter Physics
Authors: Fuh-Liang Wen | Chun-an Chan | Chengqing Wen
Source:  (article, 2025-09-01)
Field: Materials Science — Materials Chemistry

Integration of Radio Frequency Identification Interface for Enhanced Controller Area Network Bus The radiofrequency identification (RFID) interface is used in a controller area network (CAN) bus system to enhance the performance of stacked fuel cells. In addition, a personal computer base logic analyzer (LA) is utilized to monitor and analyze data transmitted over the CAN bus. The LA enables the visualization of digital signals, identification of data patterns, and troubleshooting of communication protocols. The combination of the CAN bus with the RFID interface and LA provides an effective solution for testing and monitoring digital communication systems. The result of this study proves that LA is applied in series-connected fuel cells. The advantages of the RFID CAN bus are validated by modern communication protocols. Computer science ; Radio-frequency identification ; Interface (matter) ; Identification (biology) ; Radio frequency ; Controller (irrigation) ; Embedded system ; Computer network ; Telecommunications ; Operating system Silicon Nanostructures and Photoluminescence ; Radio Frequency Integrated Circuit Design ; Silicon and Solar Cell Technologies
Authors: Wenjing Du | Junhan Yang | Qiang Guo
Source: Biophysics Reports (article, 2025-01-01)
Field: Materials Science — Surfaces, Coatings and Films

Optimized tissue sample preparation for cryo-electron tomography using serial lift-out Cryo-electron tomography (cryo-ET) can provide invaluable insights into subcellular structures in their native environment at molecular resolution. Cryo-focused ion beam (cryo-FIB) has been widely adopted to obtain thin lamellae of cells suitable for tomographic data acquisition. However, its application to tissue samples faces significant limitations. The larger sample size extends milling time, reducing sample preparation throughput. Furthermore, the need for repeated, intricate lift-out procedures adds considerable time and complexity to the workflow. The serial lift-out technique, which can prepare multiple lamellae, increases throughput and better preserves structural integrity of the tissue sample. Here we outline the workflow of the optimized serial lift-out method and provide a detailed protocol for its implementation, exemplified by a vitrified mouse liver tissue sample. Lift (data mining) ; Cryo-electron tomography ; Biomedical engineering ; Sample (material) ; Tomography ; Computer science ; Biological system ; Sample preparation ; Materials science ; Chemistry ; Chromatography ; Analytical Chemistry (journal) ; Engineering ; Data mining ; Biology ; Physics ; Optics Electron and X-Ray Spectroscopy Techniques ; Advanced Electron Microscopy Techniques and Applications ; Nuclear Physics and Applications
Authors: Erfan Norian | Bandar Astinchap | Mona Abdi
Source: Scientific Reports (article, 2025-11-28)
Field: Materials Science — Materials Chemistry

Investigation of enhanced thermoelectric response in the extended Lieb lattice using the Hubbard model We investigate the thermoelectric properties of the extended Lieb lattice under the influence of intrinsic spin-orbit coupling, on-site Coulomb interaction, and an external magnetic field using the Hubbard model and linear response theory. The unique electronic structure of this system, characterized by two tunable flat bands, provides a fertile platform for controlling charge and heat transport. By systematically analyzing the electronic contributions to thermal conductivity, electrical conductivity, Seebeck coefficient, and the thermoelectric figure of merit (ZT<sub>e</sub>), we reveal how spin-orbit coupling and strong electron correlations suppress thermal conductivity while enhancing thermoelectric efficiency. Our results show that increasing the on-site Coulomb interaction and magnetic field strength significantly improves ZT<sub>e</sub>, particularly at low to intermediate thermal energy. The modulation of flat bands via spin-orbit and interaction effects plays a critical role in enhancing the density of states near the Fermi level, thereby optimizing the Seebeck response. These findings highlight the role of flat-band engineered lattices in shaping thermoelectric response and provide theoretical insights into band-structure engineering of correlated low-dimensional materials with tunable transport behavior. Thermoelectric effect ; Hubbard model ; Coulomb ; Figure of merit ; Seebeck coefficient ; Thermoelectric materials ; Lattice (music) ; Thermal conductivity 2D Materials and Applications ; Topological Materials and Phenomena ; Advanced Thermoelectric Materials and Devices