Micro & Nano Letters最新文献

{"title":"Green Synthesis of MgFe2O4 Magnetic Nanoparticles Using Mimidium laevigatum Extract for Efficient Malachite Green Removal","authors":"Mahsa Shojaei Yeganeh,&nbsp;Ali Reza Kazemizadeh,&nbsp;Ali Ramazani,&nbsp;Hossein Rabbi Angourani,&nbsp;Parvin Eskandari","doi":"10.1049/mna2.70036","DOIUrl":"https://doi.org/10.1049/mna2.70036","url":null,"abstract":"<p>MgFe₂O₄ magnetic nanoparticles (MNPs) were synthesised using <i>Minidium leavigatum</i> extract and requisite salts through an eco-friendly procedure. This method offers several advantages, including non-toxicity, cost-effectiveness, scalability, reduced synthesis time and an environmentally sustainable approach to producing MgFe₂O₄ MNPs without the use of toxic chemicals. The MNPs were characterised using Fourier Transform Infrared Spectroscopy (FTIR), Powder X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy Dispersive X-ray analysis (EDX), Vibrating Sample Magnetometer (VSM), Brunauer-Emmett-Teller (BET) surface area analysis, zeta potential analysis and evaluation of pH effects on adsorption. XRD analysis revealed a crystallite size of approximately 11 nm with a cubic spinel structure and no impurity phases. The BET surface area of the MgFe₂O₄ MNPs was measured at 206.34 m²/g. The MNPs exhibited superparamagnetic properties with a specific saturation magnetisation of 13.22 emu/g, facilitating easy recycling and reuse. The MNPs were employed as a green nanoadsorbent for removing malachite green from aqueous solutions, achieving approximately 95% removal after 60 min (40 mg of adsorbent and 100 ppm of malachite green). The MNPs exhibited robust recyclability over five cycles with minimal efficiency loss, leveraging their magnetic separability. The Freundlich, Langmuir, Temkin, Redlich-Peterson and Hill isotherm models were employed to determine the adsorbent's capacity. The nonlinear Redlich-Peterson, and nonlinear Hill demonstrated better compatibility than the others for malachite green adsorption onto MgFe₂O₄ MNP. The <i>pseudo</i>-1st-order, <i>pseudo</i>-2nd-order and intraparticle diffusion, Boyd, and Elovich models were utilised to assess the adsorption kinetics. The adsorption kinetics model conformed a <i>pseudo-</i>2nd-order kinetic model (<i>q</i>_e = 114.9425 (mg/g), <i>k</i>₂ = 0.2508 (g/mg.min). Thermodynamic studies for malachite green adsorption onto MgFe₂O₄ MNPs revealed that the adsorption is an exothermic and a spontaneous process. In summary, phyto-synthesised MgFe₂O₄ MNPs integrate high surface area, superparamagnetic separability and excellent recyclability with rapid and efficient malachite green adsorption, governed by pseudo-second-order kinetics and nonlinear Redlich–Peterson/Hill isotherm models.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual Antifungal and Insecticidal Field Performance of Paulownia tomentosa–Derived Silver Nanoparticles Against Fusarium Basal Rot and Thrips in Onion","authors":"Tavga Sulaiman Rashid,&nbsp;Gona Sirwan Sharif,&nbsp;Hayman Kakakhan Awla,&nbsp;Samir Mustafa Hamad","doi":"10.1049/mna2.70033","DOIUrl":"https://doi.org/10.1049/mna2.70033","url":null,"abstract":"<p>Plant-derived nanomaterials have traditionally been recognised as green alternatives for the management of plant diseases and insect pests. The present study has been designed to evaluate the bio-efficacy of the <i>Paulownia</i> plant extract as a reducing agent for silver nanoparticle (AgNP) synthesis in addition to its bioactivity against <i>Fusarium</i> basal rot (FBR) and onion thrips. Biosynthesised AgNPs were well-characterised by UV–Vis spectroscopy, X-ray diffraction, Fourier transform infrared, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. Although there was very little efficacy from the use of <i>Paulownia</i> extracts alone, which resulted in inhibition levels of 12.8% against <i>Fusarium oxysporum</i> and 12.22% against thrips at 50 µg/mL, the biosynthesised AgNPs were highly active against <i>F. oxysporum</i>, exhibiting a 32.8%–100% inhibition of growth, and had an insecticidal effect that ranged up to 98%. Further, AgNPs suppressed FBR by 86.67%–88.42%, improved onion bulb quality, and significantly enhanced both bulb number and weight, 191.53 kg total, compared with untreated infected plants showing the lowest yield (76.4 kg). Thus, the present outcomes have emphasised that <i>Paulownia</i>-based AgNPs are an efficient and eco-friendly nanobiotechnological approach towards improving plant health and crop yields.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inverter-Based OTA With Tunable Pseudoresistor for Biomedical Signal Acquisition and Its Application in Arrhythmia Detection Using Machine Learning","authors":"Mohammad Aleem Farshori,&nbsp;M. Nizamuddin,&nbsp;Faraz Hashmi,&nbsp;Mohd Faiz Aslam,&nbsp;Mohammad Zulqarnain,&nbsp;Harvinder Singh,&nbsp;Mohd Asif Shah","doi":"10.1049/mna2.70034","DOIUrl":"https://doi.org/10.1049/mna2.70034","url":null,"abstract":"<p>In this study, an inverter-based operational transconductance amplifier (OTA) is designed using various configurations of FinFET and CNTFET technologies. The performance parameters of the OTA, including gain, power consumption, bandwidth, and output resistance, are analysed with variations in CNT parameters. Furthermore, the inverter-based OTA is utilised as the core amplifier in a chopper-stabilised amplifier. Three novel configurations of tunable pseudoresistors are employed as feedback resistors in the chopper-stabilized amplifier, and their impact on OTA performance is evaluated. Additionally, a machine learning-based model for arrhythmia diagnosis is developed. Algorithms such as ANN+LSTM, CNN+LSTM, and RNN+LSTM are implemented, and their performance is assessed based on training accuracy, training loss, and a confusion matrix to highlight their effectiveness. Training accuracy for ANN+LSTM, CNN+LSTM and RNN+LSTM is found to be 96.56%, 99.12%, and 94.56%, respectively.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetophoretic Drift of a Single Nanoparticle: From Langevin Theory to Atomistic Validation","authors":"Richard Nii Ayitey Akoto,&nbsp;Bernard Kwame Mussey,&nbsp;Kwabena Kan-Dapaah,&nbsp;Emmanuel Acquah,&nbsp;Cephas Avoryie","doi":"10.1049/mna2.70032","DOIUrl":"https://doi.org/10.1049/mna2.70032","url":null,"abstract":"<p>An exact analytical expression is derived for the magnetic field gradient of a rectangular permanent magnet, and the mean magnetophoretic velocity is obtained from the overdamped Langevin equation under the constant gradient approximation. To challenge the underlying assumptions of point particle Stokes drag, neglect of thermal fluctuations in the mean drift, and constant gradient closure, a molecular dynamics framework is developed to simulate a faceted magnetite nanoparticle in explicit water with a spatially varying magnetic force applied directly to each iron atom. The simulations calibrate two effective parameters: an enhanced drag coefficient (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>η</mi>\u0000 <mi>eff</mi>\u0000 </msub>\u0000 <mo>/</mo>\u0000 <msub>\u0000 <mi>η</mi>\u0000 <mi>Stokes</mi>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>1.082</mn>\u0000 <mo>±</mo>\u0000 <mn>0.007</mn>\u0000 </mrow>\u0000 <annotation>${{eta }_{{mathrm{eff}}}}/ {{eta }_{{mathrm{Stokes}}}} = 1.082 pm 0.007$</annotation>\u0000 </semantics></math>) due to faceting, and an effective magnetisation (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>M</mi>\u0000 <mi>eff</mi>\u0000 </msub>\u0000 <mo>=</mo>\u0000 <mn>420</mn>\u0000 <mo>±</mo>\u0000 <mn>8</mn>\u0000 </mrow>\u0000 <annotation>${{M}_{{mathrm{eff}}}} = 420 pm 8$</annotation>\u0000 </semantics></math> kA/m) that lies 12% below the bulk saturation value because of surface spin canting. The constant gradient approximation holds for displacements below 0.1 mm, beyond which a first-order correction accounting for gradient decay yields a unified predictive model. Linear scaling with field strength permits direct extrapolation to experimental conditions. A parity plot across 50 state points gives <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mi>R</mi>\u0000 <mn>2</mn>\u0000 </msup>\u0000 <mo>=</mo>\u0000 <mn>0.997</mn>\u0000 </mrow>\u0000 <annotation>${{R}^2} = 0.997$</annotation>\u0000 </semantics></math>, confirming the predictive power of the approach. The model provides design rules for magnetophoretic separators and is adaptable to arbitrary magnet geometries.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contribution to the Study of the Structural, Microstructural and Magnetic Properties of Nanostructured Fe(100−X)MgX Alloys Prepared by Mechanical Alloying","authors":"Abdennour El Mohri,&nbsp;Rachid Boughadaoui,&nbsp;Sofiane Taane,&nbsp;Mohamed Azzaz","doi":"10.1049/mna2.70028","DOIUrl":"10.1049/mna2.70028","url":null,"abstract":"<p>Nanocrystalline powders of Fe₍₁₀₀₋<i>_x</i>₎Mg_.<i>_x</i> alloy were synthesised by a mechanical alloying process, via a high-performance planetary milling, using a Retsch PM400 planetary mill. This study explored phase synthesis and examined the physical properties of these alloys by varying the magnesium content, <i>x</i>, for values of 5, 10, 15, 20, 33 and 45 wt. %. To characterise these materials, a range of analytical techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis, transmission electron microscopy (TEM), laser diffraction granulometry and magnetic measurements via a vibrating sample magnetometer, were employed. Furthermore, the apparent density of the alloys was determined using Archimedes' method, revealing a significant reduction in density with increasing magnesium content, thereby confirming the lightweighting effect of the Fe–Mg system. A complete transformation into a body-centred cubic (bcc) α-Fe(Mg) solid solution phase was detected in the Fe₉₅Mg₅ sample after 24 h of milling. Increasing magnesium concentration up to 15 wt. % caused an extension of the lattice parameter beyond 0.2880 ± 0.0001 nm, while the average crystallite size, expressed by 〈D〉 (in nm), significantly reduced. Additionally, the level of microdistortions, noted 〈ε〉 (in %), increased, revealing varied trends depending on the magnesium concentration for the bcc α-Fe and hcp Mg phases. Observations from SEM, combined with laser granulometry analyses, indicated a direct correlation between magnesium concentration and particle morphology: low concentration led to finer particles, while high concentration favoured particle agglomeration and increased particle size. TEM microscopy validated these observations, confirming the presence of the α-Fe phase in the Fe₉₅Mg₅ alloy. Remarkably, the Fe₈₀Mg₂₀ alloy exhibited a significant coercivity field of 220.7 ± 5 Oe, while maintaining relatively low values of remanence and saturation magnetisation at 29.53 ± 2 emu/g, thereby exhibiting the characteristics of a hybrid magnetic behaviour combining soft and semi-hard magnetic characteristics.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70028","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148381099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation Based Design Centering for Yield Optimization in Photonic Integrated Circuits","authors":"Bowen Wang,&nbsp;Yutian Zhang,&nbsp;Martin Cryan","doi":"10.1049/mna2.70029","DOIUrl":"https://doi.org/10.1049/mna2.70029","url":null,"abstract":"<p>This paper studies the use of design centering to maximize the yield of grating couplers for use in photonic integrated circuits (PICs). 2D finite difference time domain (FDTD) modelling is used to analyse the performance of the grating coupler in terms of parameters that are susceptible to process variations in deep UV lithography. The effect of fiber-to-chip measurement uncertainty is also included. Multi-dimensional interpolation is used to reduce the number of required simulations and predictions of yield optimized geometrical parameters are made using typical process variations expected in PIC foundries.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148282232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-Phase Numerical Simulations of Heat and Mass Transfer in Nanomaterial Flow Between Two Thermally Stratified Rotating Disks","authors":"Latif Ahmad,&nbsp;Shah Islam,&nbsp;Saleem Javed,&nbsp;Umair Khan,&nbsp;Masood Khan,&nbsp;Jomana A. Bashatah","doi":"10.1049/mna2.70030","DOIUrl":"https://doi.org/10.1049/mna2.70030","url":null,"abstract":"<p>The role of the nonlinear nanomaterials in heat transfer optimization through dissipation and thermal stratification is observed remarkable. The movement and behaviour of these materials become easier to predict in many manufacturing processes when Brownian motion and thermophoretic forces are included. Keeping in view this importance, the impacts of thermal stratification, viscous dissipation, Lorentz forces, and Newtonian heating are effectively incorporated in the rotation of the time-dependent objects. Moreover, the nonlinear materials’ effective rotating motion between the two disks is considered together with the inclusion of the generalised nano-type materials that contain two types of forces, Brownian and thermophoretic. The dynamic complex conduct is formulated mathematically by utilising the momentum, volume fraction, and thermal balance equations. The governing nonlinear system is solved numerically using an improved built-in collocation method implemented in MATLAB software. The results reveal that increasing the unsteadiness parameter enhances the first velocity component, known as radial, while reducing the second one (tangential) near the disk surfaces. Furthermore, the magnetic influence suppresses both velocity profiles due to the resistive Lorentz force effect. Brownian motion, Joule heating, and thermophoretic forces enhanced the thermal status of the materials, whereas the thermal stratification factor decreased the thermal behaviour of the materials.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148281916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of Cu and Cu2O Nano Particles via Immersion Deposit Method and Investigation of Their Performances as Adsorbent/Catalyst in the Removal of Methyl Orange","authors":"Fatemeh Abbasi Kesbi,&nbsp;Sara Eavani,&nbsp;Bita Mollaghadimi","doi":"10.1049/mna2.70018","DOIUrl":"https://doi.org/10.1049/mna2.70018","url":null,"abstract":"<p>This paper prepares Cu and <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>Cu</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <mi>O</mi>\u0000 </mrow>\u0000 <annotation>${rm Cu}_{2}{rm O}$</annotation>\u0000 </semantics></math> nanoparticles using immersion deposition as a simple, green and cheap procedure and characterized by X-ray diffraction, X-ray fluorescence and scanning electron microscopy. The obtained cu nanoparticles are used for investigating the degradation characteristics of the methyl orange by measuring UV–vis absorption of the dye solution in different time. The obtained results reveal that a very fast degradation rate in the conditions of 2 g/L spherical Cu nanoparticles 0.01 mL <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>H</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <msub>\u0000 <mi>O</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>${rm H}_2text{O}_2$</annotation>\u0000 </semantics></math>, almost up to 91% degradation of 100 mg/L methyl orange solution is obtained only within 30 min. These nanoparticles were successfully used as a catalyst-adsorbent for the degradation of methyl orange. Also, the Cu nanoparticle could be recovered and reused three times without the loss of its catalytic activity, which proves the catalyst is very affordable for industrial applications. The results show that the reaction of degradation of the dye presents pseudo-first-order kinetics.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WITHDRAWAL: A new mixed-ligand Cu(II) coordination polymer regulates cholinesterase activity and values on detoxifies organophosphorus poisoning","authors":"","doi":"10.1049/mna2.12144","DOIUrl":"https://doi.org/10.1049/mna2.12144","url":null,"abstract":"<p>WITHDRAWAL: X. Lin, X.-H. Jin, Y.-T. Ye, “A New Mixed-Ligand Cu(II) Coordination Polymer Regulates Cholinesterase Activity and Values on Detoxifies Organophosphorus Poisoning,” <i>Micro &amp; Nano Letters</i> (2025): e12144. https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/mna2.12144</p><p>The above article, published online on 11 December 2025, on Wiley Online Library (wileyonlinelibrary.com), has been withdrawn by agreement between the Institution of Engineering and Technology and John Wiley &amp; Sons Ltd. UK. The withdrawal has been agreed as this manuscript was under consideration but the journal decided not to proceed with publication and informed the authors about this. Despite this decision, the article was subsequently published due to a technical error on the part of Wiley, the publisher, as an unedited accepted article prior to the version of record.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.12144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compact Modelling of Ballistic p-FETs Based on Two-Dimensional InSe","authors":"Adelcio M. de Souza,&nbsp;Murilo A. Romero","doi":"10.1049/mna2.70027","DOIUrl":"https://doi.org/10.1049/mna2.70027","url":null,"abstract":"<p>This work develops a compact model for <i>p</i>-type field-effect transistors (FETs) based on two-dimensional indium selenide operating in the ballistic regime. The model explicitly captures the non-parabolic valence-band dispersion, represented by a fourth-order polynomial that reproduces its ring-shaped (or ‘Mexican-hat’) topology. From this dispersion, closed-form expressions are derived for the hole effective mass, density of states and hole concentration, which are then used to formulate the ballistic current using the Landauer formalism and the quantum capacitance. The resulting formulation is fully analytical, physics-based and supports intrinsic compact-model benchmarking. The formulation is evaluated using representative monolayer and few-layer InSe band-structure parameters reported from ab initio calculations and experimental studies to assess intrinsic performance trends. Finally, a symmetric <i>n</i>-FET/<i>p</i>-FET benchmark provides qualitative insight into the intrinsic transport asymmetry relevant to future InSe-based complementary metal-oxide-semiconductor technologies.</p>","PeriodicalId":18398,"journal":{"name":"Micro & Nano Letters","volume":"21 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/mna2.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}