Applied Physics A最新文献_第4页

Nonreciprocal photothermal effect of InSb square-hole cylinders in the mid-infrared region 中红外区域InSb方孔圆柱体的非倒易光热效应

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-24 DOI: 10.1007/s00339-026-09607-x

An Zhu, Han Wang

{"title":"Nonreciprocal photothermal effect of InSb square-hole cylinders in the mid-infrared region","authors":"An Zhu, Han Wang","doi":"10.1007/s00339-026-09607-x","DOIUrl":"10.1007/s00339-026-09607-x","url":null,"abstract":"<div>\u0000 \u0000 <p>Magneto-optical (MO) effect can overcome the limitations of Kirchhoff’s law, thereby opening new avenues for the design of highly efficient energy harvesting and conversion systems. Note that the nonradiative relaxation in MO semiconductors converts electromagnetic energy into thermal energy, in which the resulting temperature rise can be used to regulate their radiative capacity. However, previous studies have paid little attention to MO nonreciprocal structures based on indium antimonide (InSb) and to the nonreciprocal photothermal effects induced by such nonreciprocal thermal radiation. In this paper, the dielectric constant of InSb is described by the Lorentz-Drude model, and its reliability is verified against experimental data from the Palik’s Handbook. A tunable magneto-optical nonreciprocal thermal radiator based on an InSb square-hole cylinder array is proposed. By introducing a square air cavity into the cylinder, the proposed structure achieves strong nonreciprocal thermal radiation at <i>θ</i> = 18° in the wavelength range of 5–5.5 μm, which represents the smallest operating angle reported thus far for InSb-based nonreciprocal structures. Under a 3 T magnetic field, incident light with an intensity of 1 mW/µm<sup>2</sup> can produce a maximum nonreciprocal temperature difference of 124 K, thereby providing a condition for regulating the radiative power. The effects of structural parameters, including the square cavity side length, cylinder diameter, and cylinder height, on the radiative performance are systematically investigated. The enhancement mechanism of nonreciprocal thermal radiation in the square-hole cylinder is explained through analysis of the electric field energy distribution and the impedance characteristics. The influence of structural parameters on temperature rise is discussed from the perspectives of both the radiation spectrum and heat transfer efficiency. This work contributes to the future development of nonreciprocal thermal radiation and photothermal devices.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning the resistive switching characteristics of non-stoichiometric tantalum oxide memristors 调谐非化学计量氧化钽忆阻器的电阻开关特性

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-24 DOI: 10.1007/s00339-026-09567-2

N. Nithya, R. Mallikarjun, Srikanth Itapu

引用次数: 0

Influence of shell architecture on dielectric loss suppression and relaxation dynamics of PVDF/BaTiO₃@Al₂O₃ polymer nanocomposites 壳结构对PVDF/BaTiO₃@Al₂O₃聚合物纳米复合材料介电损耗抑制和弛豫动力学的影响

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-24 DOI: 10.1007/s00339-026-09627-7

Sushil Kumar Behera, Maheswar Panda, Harsha Chouhan, Satyam Dubey, Partha Sarathi Rout, Dinesh Kumar Shukla

{"title":"Influence of shell architecture on dielectric loss suppression and relaxation dynamics of PVDF/BaTiO₃@Al₂O₃ polymer nanocomposites","authors":"Sushil Kumar Behera, Maheswar Panda, Harsha Chouhan, Satyam Dubey, Partha Sarathi Rout, Dinesh Kumar Shukla","doi":"10.1007/s00339-026-09627-7","DOIUrl":"10.1007/s00339-026-09627-7","url":null,"abstract":"<div>\u0000 \u0000 <p>As purchased PVDF and synthesized Core-Shell BaTiO<sub>3</sub>@Al<sub>2</sub>O<sub>3</sub> [BT@ALO] nanostructures through heteronucleation method were used to synthesize the cold pressed PVDF/BT@ALO polymer nanocomposites as innovative polymer dielectrics. The structure and microstructures were confirmed through XRD, FESEM, and TEM studies. Analysis of Dielectric results show that during the cold pressing method, the spherulites of PVDF were preserved, which led to an increase in the effective dielectric constant and the thickened insulating shell layer leads to suppression of dielectric loss ~ 0.04, obtained due to the addition of 20 wt% of BT@ALO into the PVDF matrix. AC conductivity is well-fitted with Jonscher’s power law and modulus spectra show a non-Debye type relaxation with stretching coefficient ‘β’ in the range of 0.3 to 0.4, which is less than 1. These PVDF/ BT@ALO PNC may be used as high-performance dielectric materials for next-generation capacitors and other energy storage applications.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Al doping on the structural and optical properties of TiO₂ nanoparticles prepared by sol–gel route Al掺杂对溶胶-凝胶法制备tio2纳米颗粒结构和光学性能的影响

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09583-2

Rajesh kumar, Manmohan mishra, Sandeep kumar singh, Vishal shukla, Mahendra kumar

{"title":"Effect of Al doping on the structural and optical properties of TiO₂ nanoparticles prepared by sol–gel route","authors":"Rajesh kumar, Manmohan mishra, Sandeep kumar singh, Vishal shukla, Mahendra kumar","doi":"10.1007/s00339-026-09583-2","DOIUrl":"10.1007/s00339-026-09583-2","url":null,"abstract":"<div>\u0000 \u0000 <p>Titanium dioxide (TiO₂) is widely investigated for photocatalytic and sensing applications; however, its efficiency is bounded by a wide band gap and rapid charge recombination. In this study, pure and Al-doped TiO₂ nanoparticles were synthesized using an optimized sol–gel route to systematically modulate their structural and optical properties. The incorporation of Al³⁺ ions induced noticeable lattice distortion, as confirmed by XRD peak broadening and Raman blue shifts, leading to a reduction in crystallite size from 13.9 nm to 8.53 nm. SEM analysis revealed the development of enhanced surface porosity with increasing dopant concentration, which is favorable for interfacial photocatalytic reactions. UV–Visual spectroscopy demonstrated a progressive red shift of the absorption edge and a decrease in the optical band gap from 3.20 eV (pure TiO₂) to 2.64 eV (10 mol% Al doped TiO<sub>2</sub>), indicating the formation of intermediate defect states. FTIR results showed reduced surface hydroxylation, consistent with altered surface chemistry. Unlike previous studies, this work establishes a direct correlation between Al-induced lattice distortion, band gap narrowing, and surface activation. Therefore, the incorporation of aluminum (Al) into TiO₂ leads to a reduction in its energy band gap, thereby enhancing its potential for various applications, like TiO₂-based photocatalysts with improved visible-light responsiveness, in solar energy conversion and gas sensing technologies.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of additives for wet alkaline polishing of monocrystalline silicon 单晶硅湿法碱性抛光添加剂的设计

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09580-5

Pengwei Zhang, Danjiang Tang, Lihui Cao, Pingping Feng, Haoran Zhang, Xiufang Yang, Zheng Yin, Shenghua Ma, Hang Zhao

{"title":"Design of additives for wet alkaline polishing of monocrystalline silicon","authors":"Pengwei Zhang, Danjiang Tang, Lihui Cao, Pingping Feng, Haoran Zhang, Xiufang Yang, Zheng Yin, Shenghua Ma, Hang Zhao","doi":"10.1007/s00339-026-09580-5","DOIUrl":"10.1007/s00339-026-09580-5","url":null,"abstract":"<div>\u0000 \u0000 <p>In the field of photovoltaics, improving the photoelectric conversion efficiency of solar cells has always been a central goal of research. Back polishing, as a key step in solar cell fabrication, can enhance the photovoltaic conversion efficiency, and obtaining a clean and flat backside morphology with uniform dimensions is still challenging and relies on the use of alkali polishing additives. In this study, a new alkali polishing additive formulation was finalized through cross-experimentation: containing 0.1% sodium persulfate, 1% potassium perfluorohexylsulfonate, 0.8% xylitol, and 1.5% 3-aminopropyltriethoxysilane reagent. Under the approximate production line polishing conditions, the alkali concentration was 1.92%, the reaction temperature was 65 °C, and the reaction time was 210 s. The wafers formed a smooth and uniform back surface (the size was uniformly distributed in 8.1–9.0 μm and the step difference was below 1 μm), the reflectance was increased to 46.10%, and the conversion efficiency was increased by 0.0312% compared with the traditional additives, the open-circuit voltage was increased by 0.0009 V, short-circuit current increased by 0.0003 A, and series resistance decreased by 0.00004 Ω, with excellent performance in the actual production line.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced optical properties of Eu3+-doped Sr3B(PO4)3 (B = Sc, Gd, Y, Lu) phosphors for w-LEDs applications Eu3+掺杂Sr3B(PO4)3 （B = Sc, Gd， Y, Lu）荧光粉增强w- led光学性能

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09630-y

Yidan Wang, Yaobiao Chen, Fang Zhao, Rui Wang, Ze Zhang

{"title":"Enhanced optical properties of Eu3+-doped Sr3B(PO4)3 (B = Sc, Gd, Y, Lu) phosphors for w-LEDs applications","authors":"Yidan Wang, Yaobiao Chen, Fang Zhao, Rui Wang, Ze Zhang","doi":"10.1007/s00339-026-09630-y","DOIUrl":"10.1007/s00339-026-09630-y","url":null,"abstract":"<div>\u0000 \u0000 <p>LEDs currently serve as the predominant light source in the market. However, conventional white LEDs exhibit inherent limitations, including high color temperature as well as low thermal stability. Consequently, the development of efficient red phosphors to solve the shortcomings holds remarkable research value. In this work, a series of Eu<sup>3+</sup> doped Sr<sub>3</sub>B(PO<sub>4</sub>)<sub>3</sub> (B = Sc, Gd, Y, Lu) red phosphors were synthesized via a high-temperature solid-state method. The crystal structure and phase purity of the samples were analyzed via X-ray diffraction. The effects of B-site cation substitution and Eu<sup>3+</sup> doping concentration on the photoluminescence properties were systematically investigated, revealing that Sr<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub> exhibits the highest emission intensity among the four hosts. The optimal doping concentration was determined to be x = 0.5 for Sr<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: xEu<sup>3+</sup>. Temperature-dependent measurements revealed that the photoluminescence intensity of Sr<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: 0.5Eu<sup>3+</sup> remained 85.42% of its room-temperature value at 423 K, demonstrating high thermal stability. The luminescence decay curves were fitted using a double-exponential function, and the energy transfer mechanism was attributed to dipole-dipole interaction. Additionally, the calculated CIE chromaticity coordinates were (0.6181, 0.3662), closely matching those of commercial red phosphors, with a color purity of 95.8%. Overall, Sr<sub>3</sub>Sc(PO<sub>4</sub>)<sub>3</sub>: xEu<sup>3+</sup> Sr<sub>3</sub>B(PO<sub>4</sub>)<sub>3</sub>: 0.5Eu<sup>3+</sup>and demonstrates excellent thermal stability, high color purity, simple synthesis, and environmentally friendly properties. These findings indicate that this red phosphor material holds great potential for applications in lighting as well as display technologies.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoarchitectonics of a bimetallic Sr–Cu malate MOF on conductive Ni foam for Efficient oxygen evolution reaction 导电镍泡沫上用于高效析氧反应的Sr-Cu双金属MOF的纳米结构

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09599-8

Aneela Kanwal, Nigarish Bano, Sonia Kiran, Muhammad Hanzala Kabir, Danial Mazhar, Ghazala Yasmeen, S. Shah

{"title":"Nanoarchitectonics of a bimetallic Sr–Cu malate MOF on conductive Ni foam for Efficient oxygen evolution reaction","authors":"Aneela Kanwal, Nigarish Bano, Sonia Kiran, Muhammad Hanzala Kabir, Danial Mazhar, Ghazala Yasmeen, S. Shah","doi":"10.1007/s00339-026-09599-8","DOIUrl":"10.1007/s00339-026-09599-8","url":null,"abstract":"<div><p>The growing global demand for clean energy has intensified the search for efficient and cost-effective electrocatalysts for water splitting. Metal–organic frameworks (MOFs), known for their high surface area, tunable porosity, and structural flexibility, offer significant potential in this field. In this work, a bimetallic Sr-Cu-MOF/NF was synthesized using malic acid as an organic linker via a simple one-pot solvothermal method and directly grown on nickel foam (NF), forming a binder-free Sr-Cu-MOF/NF electrode. The incorporation of conductive and porous NF enhances charge transport and mechanical stability, while the dual-metal synergy of Sr and Cu promotes superior catalytic activity. The synthesized electrode was thoroughly characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS), confirming successful MOF formation with a uniform coating over the Ni foam. Electrochemical evaluation under alkaline conditions demonstrated excellent oxygen evolution reaction (OER) performance, with a low overpotential of 230 mV at 10 mA cm⁻² and a Tafel slope of 60 mV dec⁻¹ outperforming the individual Sr-MOF/NF and Cu-MOF/NF. Chronoamperometric measurements further confirmed the long-term durability of the electrode, maintaining stable current density over a continuous 48-hour period. These results highlight the enhanced electron transfer, increased active sites, and synergistic effect, showcasing Sr-Cu-MOF/NF as a promising electrode for sustainable energy conversion applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Moderate Ga-doping effects on structural, optical, and dielectric properties of ZnO nanostructured thin films for optoelectronics applications 适度的ga掺杂对ZnO纳米薄膜结构、光学和介电性能的影响

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09624-w

Samar Al-Shehri, Azzah A. Alshehri, Ahmed M. El-Khayatt, A. Ashour, Hosam M. G. AL-Qatlawi

{"title":"Moderate Ga-doping effects on structural, optical, and dielectric properties of ZnO nanostructured thin films for optoelectronics applications","authors":"Samar Al-Shehri, Azzah A. Alshehri, Ahmed M. El-Khayatt, A. Ashour, Hosam M. G. AL-Qatlawi","doi":"10.1007/s00339-026-09624-w","DOIUrl":"10.1007/s00339-026-09624-w","url":null,"abstract":"<div><p>Zinc oxide (ZnO) thin films are widely used in optoelectronic devices due to their wide bandgap, high carrier mobility, and excellent optical transparency. Doping ZnO with gallium (Ga) further tailors these properties, enhancing suitability for transparent conductive oxides, gas sensors, and photonic device applications. This study explores the effects of varying Ga concentrations on ZnO thin films’ structural, optical, and dielectric properties, using techniques like X-ray diffraction (XRD) and electron beam evaporation. Key findings include a reduction in crystallite size and increased lattice strain with higher Ga doping, impacting the films’ band gap and optical transmittance. These modifications lead to a blue shift in the optical band gap and increased transmittance in the visible to near-infrared range. The Ga-doped ZnO films also show higher optical conductivity at low doping levels, due to increased free electron concentration, while higher Ga content reduces conductivity due to scattering and defects. Lastly, impedance spectroscopy reveals changes in relaxation times and complex impedance, as represented in Cole-Cole diagrams, providing insights into dielectric relaxation and conductivity behavior. These results contribute to optimizing ZnO films for use in various optoelectronic devices.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Two-photon absorption in metal nanoparticles- graphene nanodisks-quantum dots hybrid plasmonic systems 金属纳米粒子-石墨烯纳米盘-量子点混合等离子体系统的双光子吸收

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09634-8

Mariam M. Tohari

{"title":"Two-photon absorption in metal nanoparticles- graphene nanodisks-quantum dots hybrid plasmonic systems","authors":"Mariam M. Tohari","doi":"10.1007/s00339-026-09634-8","DOIUrl":"10.1007/s00339-026-09634-8","url":null,"abstract":"<div>\u0000 \u0000 <p>Graphene-metal hybrid plasmonic systems have more possibilities to control and enhance light-matter interaction, providing a promising platform for modern photonics and nonlinear optical applications. We study two-photon absorption induced in a self-assembled quantum dot at the proximity of a graphene nanodisk and a metal nanoparticle using the density-matrix approach. The two-photon polarization induced in the quantum dot is determined by analyzing the dipole-dipole interaction between the system’s components. We find that the two-photon absorption spectral properties are sensitive to the system’s geometrical features. We observe Fano-like resonances with three peaks at small separation distances between the system’s components. As one plasmonic component is kept further away from the quantum dot, the triplet-peaked absorption spectrum switches to a double-peaked one, with a broad bandwidth due to the corresponding strong dipole-dipole interactions. On the other hand, the two-photon absorption spectra switch to narrow-band single-peaked spectra at relatively large separation distances. We find that the Stark effect initiates at a threshold field enhancement factor of 10. Suggested applications of these findings could include spectroscopy efficiency, imaging, material characterization, and high-resolution metrology and sensing.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of Si-decoration on T-boron carbide nanosheets as biosensors for the human nervous system stimulant methylphenidate 二氧化硅修饰碳化硼纳米片对人类神经系统兴奋剂哌甲酯生物传感器的影响

IF 2.8 4区材料科学

Applied Physics A Pub Date : 2026-04-23 DOI: 10.1007/s00339-026-09603-1

Nabaa Jawad Kadhim, Abdulsalam Q. Almashhadani, Omayma Salim Waleed, G. Padma Priya, Supriya S, Subhashree Ray, Renu Sharma, Saodatkhon Ibragimova, Z. Matniyozo, Doniyor Jumanazarov, Safia Obaidur Rab

{"title":"The effect of Si-decoration on T-boron carbide nanosheets as biosensors for the human nervous system stimulant methylphenidate","authors":"Nabaa Jawad Kadhim, Abdulsalam Q. Almashhadani, Omayma Salim Waleed, G. Padma Priya, Supriya S, Subhashree Ray, Renu Sharma, Saodatkhon Ibragimova, Z. Matniyozo, Doniyor Jumanazarov, Safia Obaidur Rab","doi":"10.1007/s00339-026-09603-1","DOIUrl":"10.1007/s00339-026-09603-1","url":null,"abstract":"<div>\u0000 \u0000 <p>In recent decades, 2D nanomaterials have shown great promise for sensing various drugs. In this study, a novel nanomaterial called tetragonal boron carbide (TBC) was introduced and analyzed using DFT simulations. This material was constructed by replacing 50% of the carbon atoms in tetragonal graphene with boron atoms. Furthermore, the adsorption of methylphenidate onto pristine TBC (PTBC) and silicon-decorated TBC (Si@TBC) was investigated. It was found that the adsorption energy of methylphenidate on Si@TBC was − 1.77 eV, which was lower than that of PTBC, indicating a stronger interaction. The findings also indicated the exothermic nature and spontaneity of the adsorption process. Based on HOMO-LUMO analysis, charge transport from methylphenidate to TBC was facilitated following the decoration with Si atoms. Furthermore, the recovery time, a crucial parameter for evaluating the reusability of a sensor, was calculated to be approximately 12.68 s. This relatively short recovery time indicates that the MPHD molecules can desorb from the Si@TBC surface rapidly, allowing for efficient sensor regeneration and suggesting the material’s suitability for reversible and real-time sensing applications .Finally, the robust interaction between Si@TBC and methylphenidate suggests that Si@TBC can be utilized as a sensing nanomaterial or nanocarrier with high electroactivity.</p>\u0000 </div>","PeriodicalId":473,"journal":{"name":"Applied Physics A","volume":"132 5","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147738693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0