Materials Literature
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This study presents a broadband photodetector operating from the near‐infrared (NIR) to the ultraviolet (UV) region, based on a 0D/2D unipolar heterojunction. The heterostructure, composed of nitrogen‐doped graphene quantum dots (N‐GQDs) and molybdenum disulfide (MoS 2 ), was fabricated via a simple one‐pot hydrotherm…
Food waste-derived carbon dots (CDs) from spent coffee grounds or spinach were synthesized via hydrothermal and solvothermal methods and systematically characterized for their photoluminescence and surface chemical properties. Biological evaluations using human neural progenitor cells (hNPCs) demonstrated efficient ce…
Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce i na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę i kulturę techniczną.
This revised article addresses Q0024, 'Control defects and grain boundaries to engineer macroscopic material properties?' using a question-specific mathematical construction rather than a generic logarithmic template. The proposed model, termed the Grain-Boundary Property Transfer Model, uses grain-boundary misorienta…
Polystyrene (PS) films typically exhibit brittle fracture under tensile deformation. Hot stretching induces polymer chain orientation, leading to a brittle-to-ductile transition in PS films. In addition, the photoisomerization of azobenzene (AB) using UV irradiation decreases the glass transition temperature (Tg) of t…
The series identifies every Standard-Model interaction vertex with a Reidemeister move on knotted brane loops, and the path integral with a sum over Reidemeister sequences (Papers VIII, XII); the standing open item is the measure. This paper establishes the geometric half of a candidate answer and is explicit that the…
تحلیل بنیادین، بازنویسی تانسوری و اثبات جامعِ کامل مسئله اتلاف گرما و انتقال حرارت غیربالستیک در نانوالکترونیک (Heat Dissipation & Non-Ballistic Phonon Transport Paradox - معمای شماره ۱ از ۱۰۰) در بستر فیزیک اطلاعات حمزه (HIP-1155) به شرح زیر است: ۱. مقدمه و معمای اتلاف گرما و انتقال حرارت غیربالستیک در نانوالکترونیک…
High-performance microwave-absorbing materials (MAMs) require a precise balance between dielectric and magnetic losses to achieve optimal impedance matching. Herein, we report the synthesis of ZnFe2O4@PANI composites via a magnetic-field-aided in-situ oxidative polymerization method. Systematic characterization reveal…
ABSTRACT Chemiluminescence eliminates interference from real‐time excitation light, thereby maximizing the signal‐to‐noise ratio of imaging. However, the reported chemiluminescent scaffolds remain limited, and the development of novel and efficient chemiluminescent scaffolds is critical and urgent. Herein, we synthesi…
Abstract A series of zirconium(IV) complexes with a bis(benzylamino)-p-tert-butylcalix[4]arene ligand, LZrX2, were synthesized and structurally characterized via single-crystal X-ray diffraction and NMR. The obtained complexes proved to be unexpectedly susceptible to protonation because of the low acidity of the ligan…
This study investigates the mechanical and tribological behavior of three composites with a ZrO2 matrix stabilized with 1.75 mol% Y2O3 and containing 1 wt.% Al2O3, reinforced with TiC (A), TiC + ZrC (B), and TiC + WC + Mo2C (C). The matrix powder was synthesized by chemical coprecipitation, and the composites were con…
The precise geometric and topological mechanisms governing high-temperature and potential room-temperature superconductivity (RTS) remain obscured by the mathematical rigidity of continuous differential equations. In this paper, we operationalize the theoretical premise that superconductivity is not merely a quantum p…
The increasing demand for sustainable materials has intensified interest in converting agricultural residues into functional fillers for polymer composites. This study investigated the thermal, structural, and flammability characteristics of polypropylene (PP) composites containing untreated Canarium schweinfurthii nu…
Abstract In this work, a series of ACo2O4 (A = Mn, Ni, Zn) spinel catalysts were prepared by a sol-gel method, which were further promoted through H2/Ar plasma treatment. Activity test results have shown that the plasma-treated MnCo2O4-p exhibits excellent low-temperature activity (T90 = 218 °C). The XPS, H2-TPR, 18O2…
FINDING: The five Platonic solids are the only convex regular polyhedra, arising from constraints on vertex figures and face angles, with molecular geometry reflecting their symmetry groups. MATH: Euler's formula: V - E + F = 2. For regular polyhedra: {p,q} where p = sides per face, q = faces per vertex. Constraint: 1…
Two-dimensional (2D) MXenes have been widely recognized as an extremely promising type of transition metal carbides, nitrides, and carbonitrides as a material of high-quality sensing technologies, owing to their outstanding electrical conductivity, controllable surface chemistry, and high specific surface area as well…
The increasing environmental concern associated with non-biodegradable plastics have sparked significant interest in biodegradable alternatives such as polylactic acid (PLA), polybutylene succinate (PBS) and polybutylene adipate terephthalate (PBAT) for food packaging applications. While these polymers show potential,…
Cholesteric liquid crystals (CLCs) possess the unique ability to selectively reflect incident circularly polarized light, exhibiting tremendous potential in diverse optical applications. In this study, a trilayer composite architecture of polymer-stabilized cholesteric liquid crystals (PSCLCs) was successfully fabrica…
Abstract Uncontrolled residues of tetracycline antibiotics (TCs) in food disrupt human gut homeostasis and even trigger hepatic disorders, thereby highlighting the critical necessity for detecting trace TCs. Herein, two nitrogen-incorporated carbon nanodots (N1–36CD and N2–24CD) were prepared through a hydrothermal ro…
The modulation of ZnO physicochemical properties through Mn doping represents a promising strategy for the development of multifunctional nanomaterials with enhanced biological performance. In this study, we investigate how the nominal Mn concentration influences both the physicochemical properties and antibacterial,…