Advanced Physics Research最新文献

{"title":"Issue Information (Adv. Phys. Res. 9/2026)","authors":"","doi":"10.1002/apxr.70185","DOIUrl":"https://doi.org/10.1002/apxr.70185","url":null,"abstract":"","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70185","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SERS Sensor Chips Based on Nanosphere Lithography on Flexible Platforms for the Detection of Chemicals, Pesticides and Nucleotides","authors":"Merbin John,&nbsp;Umang Chaturvedi,&nbsp;Kamal Lohani,&nbsp;Kamal Kumar,&nbsp;Anuj Dhawan","doi":"10.1002/apxr.70160","DOIUrl":"https://doi.org/10.1002/apxr.70160","url":null,"abstract":"<p>In this paper, we propose an efficient and scalable method for creating high-performance, flexible surface-enhanced Raman scattering (SERS) substrates using gap-tunable nanosphere lithography on flexible substrates such as Kapton and PET. We overcome the natural hydrophobic nature of flexible polymer films by depositing an ultrathin ALD-SiO₂ interface layer. While we carried out reactive ion etching (RIE) to controllably vary the gaps between the polystyrene nanospheres self-assembled on the ALD-SiO₂ coated Kapton and PET films, overcoating of these nanospheres with thin layers of Au or Ag leads to the fabrication of plasmonic nanospheres with sub-10 nm gaps and intense SERS hotspots. It is observed that while silver is preferable for maximizing SERS signals, gold offers advantages for applications requiring high spectral purity and minimal substrate interference. Mechanical characterization of the flexible SERS sensor chips is carried out, and it demonstrates that the SERS sensor-chips maintain their spectral integrity during intense cyclic bending and static conformal wrapping. This affirms the appropriateness of these flexible SERS sensor chips for swab-and-scan and other point-of-care (POC) applications. The applicability of the SERS sensor chips for diverse applications was demonstrated by its ability to detect hazardous pesticide residues and DNA nucleotides with high levels of accuracy.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70160","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantum-Level Influences on Enzyme Reactions and Their Ripple Effects on Biological Phenomena","authors":"Takeshi Yasuda","doi":"10.1002/apxr.70171","DOIUrl":"https://doi.org/10.1002/apxr.70171","url":null,"abstract":"<p>Quantum mechanics describes the behavior of matter at atomic and subatomic scales. Because living organisms are ultimately composed of atoms and molecules, quantum-mechanical effects are expected to contribute to biological phenomena. Quantum biology seeks to elucidate life processes from a quantum-mechanical perspective. Life is sustained by chemical reactions catalyzed by numerous enzymes within cells. Hydrolytic enzyme reactions involving proton transfer from water molecules participate in nearly all biological processes. This review discusses how quantum-level effects, including quantum tunneling, may propagate from enzymatic proton-transfer reactions to higher-order biological phenomena, such as DNA damage repair and gene expression. It summarizes evidence that quantum-level mechanisms of kinetic isotope effects associated with hydrogen transfer can influence the enzymatic activity and potentially affect cellular processes.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantum Phenomena in Molecular and Biological Systems: A Decoherence-Based Decision Framework With Falsifiable Predictions and a Failure-Mode Taxonomy","authors":"Sarfaraz K. Niazi","doi":"10.1002/apxr.202600009","DOIUrl":"https://doi.org/10.1002/apxr.202600009","url":null,"abstract":"&lt;p&gt;This review introduces a quantitative decision-making framework based on the Lindblad master equation and the formalism of open quantum systems. This framework facilitates the identification of phenomena within molecular and biological systems that require explicit quantum-mechanical analysis beyond classical approximations. It does not merely reiterate that quantum mechanics underpins all chemical processes; rather, this principle serves as a foundational premise rather than an original contribution. The significant contribution consists of a set of operational criteria derived from decoherence timescales, conditions for Markovian validity, boundaries of the computational domain, and requirements for experimental falsifiability. These criteria enable physicists or physical chemists to assess, for any molecular system and quantum hypothesis, whether the hypothesis is supported by evidence, remains speculative, or can be falsified through targeted experimentation. Three quantitative deliverables implement this framework. First, the τ&lt;sub&gt;dec&lt;/sub&gt; &gt; τ&lt;sub&gt;func&lt;/sub&gt; condition is derived from the Lindblad formalism and applied numerically to each class of biological quantum phenomenon: enzyme hydrogen tunneling satisfies the condition by approximately one order of magnitude (τ&lt;sub&gt;transit&lt;/sub&gt; ≈ 0.1 femtoseconds vs. τ&lt;sub&gt;dec&lt;/sub&gt; ≈ 1 femtosecond in a hydrophobic active site); the radical pair mechanism satisfies it by one to fourteen times (τ&lt;sub&gt;dec&lt;/sub&gt; 1 to 10 microseconds vs. τ&lt;sub&gt;func&lt;/sub&gt; ≈ 710 nanoseconds at geomagnetic field strength); photosynthetic electronic coherence operates in the non-Markovian regime where the Lindblad equation fails and the τ&lt;sub&gt;dec&lt;/sub&gt;/τ&lt;sub&gt;func&lt;/sub&gt; ratio is marginal. Second, a failure-mode taxonomy is defined in Section 2 as the primary methodological tool: five criteria and a set of operationally testable red flags, applied as a running template to every phenomenon section throughout the review. Third, specific quantitative predictions are derived for each contested phenomenon, stating the observable, the predicted effect magnitude, and the control experiment distinguishing quantum from classical mechanisms. Quantum chemistry methods, including Density Functional Theory (DFT), Quantum Mechanics/Molecular Mechanics (QM/MM), and Fragment Molecular Orbital (FMO) techniques, are assessed within their rigorously validated accuracy domains. The approximately 1 kcal/mol accuracy of hybrid DFT applies to closed-shell main-group organic systems but does not extend to transition-metal complexes, open-shell species, or a broad range of pharmaceutical chemicals without explicit benchmarking. This limitation is consistently applied throughout the review and is not relaxed in discussions of applications. Kinetic isotope effects that surpass the zero-point-energy-corrected semiclassical limit of approximately 6.9 at 298 K exemplify nuclear tunneling phenomena in enzymatic catalysis. In drug design, deuterium i","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202600009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sintering-Driven Modulation of Lattice Dynamics, Elastic Behavior, and Dielectric Response in Al–Sn Co-Doped Zinc Ferrite Nanoparticles","authors":"Matin Patel,&nbsp;Kirti R. Desai,&nbsp;Devendra S. Wagare,&nbsp;Sagar E. Shirsath,&nbsp;Prashant D. Netankar","doi":"10.1002/apxr.70149","DOIUrl":"https://doi.org/10.1002/apxr.70149","url":null,"abstract":"<p>In this work, ZnAl_0.1Sn_0.1Fe_1.8O₄ (ZASFO) ferrites were synthesized via a sol–gel auto-combustion route and sintered at 800°C, 1000°C, and 1200°C to systematically investigate the influence of thermal processing on vibrational, elastic, and dielectric properties. X-ray diffraction confirms the formation of a single-phase cubic spinel structure for all samples. FT-IR analysis reveals characteristic tetrahedral (ν₁) and octahedral (ν₂) metal–oxygen stretching modes, from which site-specific force constants were evaluated. The tetrahedral force constant increases markedly with sintering temperature, indicating enhanced lattice rigidity and improved crystallinity. Elastic moduli derived from IR-based lattice dynamical analysis show increased stiffness, sound velocity, and Debye temperature at higher sintering temperatures, reflecting strengthened metal–oxygen bonding and reduced lattice disorder. Dielectric measurements demonstrate strong frequency dispersion governed by Maxwell–Wagner interfacial polarization and Koop's model, with enhanced dielectric constant and reduced high-frequency loss for samples sintered at higher temperatures. AC conductivity follows Jonscher's universal power law, confirming hopping-dominated charge transport associated with Fe²⁺/Fe³⁺ pairs at octahedral sites. The combined effects of Al³⁺-induced lattice stabilization, Sn⁴⁺-driven charge compensation, and sintering-controlled microstructural evolution establish clear structure–property correlations, highlighting ZASFO ferrites as promising candidates for dielectric and multifunctional energy applications.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70149","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive DFT Analysis of FeSi and RhSi: Structural Stability, Electronic Contrast and Transport-Optical Responses","authors":"Md Farhan Hassan,&nbsp;Shaher Azad,&nbsp;Md Salim Hossain,&nbsp;Suptajoy Barua,&nbsp;Md Kamruzzaman","doi":"10.1002/apxr.70148","DOIUrl":"https://doi.org/10.1002/apxr.70148","url":null,"abstract":"<p>Transition metal monosilicides, notably FeSi, the cubic (B20) and the orthorhombic (B31) phases of RhSi, have been widely studied due to their unconventional electronic properties and promising applications. Using the first-principles density functional theory in combination with the Boltzmann transport formalism, we systematically investigate their structural, mechanical, thermodynamic, thermoelectric, and optical properties. Elastic constants and polycrystalline moduli confirm the mechanical stability of these compounds. The relative softness and greater machinability of c-RhSi and o-RhSi compared to FeSi are attributed to their lower Debye temperature. We analyze the electronic character to be semiconducting for FeSi and semimetallic and metallic for c-RhSi and o-RhSi, respectively. FeSi shows superior mid-temperature power factor with a large Seebeck coefficient and peak power factor, whereas c-RhSi maintains robust electronic transport properties at higher temperatures. Both FeSi and c-RhSi are optically isotropic. c-RhSi features a high reflectivity and refractive index for the purpose of photonic applications, while FeSi offers a balanced optical response, which is suitable for cost-effective device integration.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70148","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resonant Tunneling in Laser-Dressed Double-Barrier Nanostructures: Role of Potential Geometry","authors":"Recep Aydın,&nbsp;Mehmet Batı","doi":"10.1002/apxr.70152","DOIUrl":"https://doi.org/10.1002/apxr.70152","url":null,"abstract":"<p>This work examines resonant tunneling in laser-dressed double-barrier semiconductor nanostructures using the transfer matrix method. Rectangular, parabolic, and triangular barrier geometries are considered to examine the influence of potential shape on resonance tunneling behavior. The effect of an intense laser field is treated within the effective mass and high-frequency approximation, with the roles of the external electric field, barrier height, and well width. The results show that increasing the laser field parameter significantly lowers the resonance energies due to laser-induced modification of the effective confinement potential. External electric fields produce Stark-like shifts. Barrier height variations lead to a shift of resonance energies to higher energy, reflecting stronger confinement, while increasing the well width causes a pronounced reduction in resonance energies as a consequence of weakened quantum confinement. Among the investigated geometries, parabolic barriers display smoother and more stable resonance evolution, whereas triangular barriers show stronger tunability under external perturbations. These findings demonstrate that the combined use of laser dressing and potential shape engineering provides an efficient mechanism for controlling resonant tunneling characteristics in nanoscale electronic and optoelectronic devices.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Issue Information (Adv. Phys. Res. 8/2026)","authors":"","doi":"10.1002/apxr.70168","DOIUrl":"https://doi.org/10.1002/apxr.70168","url":null,"abstract":"","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the Magnetic Phase Transitions in TbMn2-xTixSi2 (x = 0–0.3)","authors":"E. M. H. Arif,&nbsp;Wayne D Hutchison,&nbsp;ChinWei Wang,&nbsp;Jianli Wang,&nbsp;Zhi Li,&nbsp;Zhenxiang Cheng","doi":"10.1002/apxr.202500115","DOIUrl":"https://doi.org/10.1002/apxr.202500115","url":null,"abstract":"<p>Magnetocaloric materials receive considerable attention as promising candidates for next-generation energy-efficient and environmentally benign solid-state refrigeration technologies. These materials exhibit the magnetocaloric effect (MCE), whereby heat is absorbed or released upon the application or removal of a magnetic field. In this study, the magnetocaloric properties of compounds TbMn_2-xTi_xSi₂ (0.1 ≤ <i>x</i> ≤ 0.3) are systematically investigated. The series exhibits a substantial magnetocaloric response and large refrigerant capacities, rendering them attractive for low-temperature cooling applications. Comprehensive structural and magnetic characterizations are conducted using temperature-dependent neutron diffraction, magnetization measurements, and specific heat analysis. The substitution of Ti for Mn leads to a noticeable expansion of the unit cell and induces pronounced modifications in the magnetic transition behavior. Notably, the two first-order ferromagnetic transition temperatures progressively decrease with increasing Ti content, shifting from T_C1 = 50 K and T_C2 = 62 K for <i>x</i> = 0.0 to T_C1 = 37 K and T_C2 = 44 K for <i>x</i> = 0.3. These results underscore of magnetic phase transitions and MCE performance through chemical substitution, reinforcing the potential of Ti-doped TbMn_2-xTi_xSi₂ compounds for low-temperature magnetic refrigeration applications.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202500115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-Principles Investigation of the Structural, Electronic, Optical, Elastic, and Thermal Properties of Defect Diamond-Like Hg3P2S8","authors":"Saravana Karthikeyan SKS,&nbsp;Sankar Ganesh Ramaraj,&nbsp;Ryo Watanabe,&nbsp;Choji Fukuhara,&nbsp;Chang Yi Kong","doi":"10.1002/apxr.70151","DOIUrl":"https://doi.org/10.1002/apxr.70151","url":null,"abstract":"<p>Defect diamond-like chalcogenides have emerged as an important class of infrared nonlinear optical (IRNLO) materials because they can combine strong second-harmonic generation, structural flexibility, and useful optical transparency. In this work, the structural, electronic, vibrational, optical, elastic, and thermal transport properties of Hg₃P₂S₈ (HPS) were systematically investigated using first-principles calculations based on density functional theory and density functional perturbation theory. The results show that HPS is a direct-band-gap semiconductor with a bandgap of 1.906 eV. Phonon-dispersion calculations reveal the absence of imaginary modes, confirming the dynamical stability of the crystal. Raman analysis identifies the characteristic vibrations of the distorted HgS₄ and rigid PS₄ tetrahedral units, which are key to the defective diamond-like framework. Optical calculations indicate a strong ultraviolet response, with pronounced reflectivity, absorption, dielectric activity, optical conductivity, and energy-loss features concentrated in the short-wavelength region. HPS is a relatively soft, anisotropic material (B_H = 16.067 GPa, G_H = 10.279 GPa, E = 25.416 GPa) with a low acoustic Debye temperature (170 K) and intrinsically low lattice thermal conductivity (0.993–0.298 W m⁻¹ K⁻¹ from 300–1000 K). These findings provide a comprehensive structure–property understanding of HPS and highlight promise for IR-NLO, optoelectronic, and photonic applications.</p>","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"5 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.70151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148696539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}