TY - JOUR AU - Bonyár, Attila AU - Nagy, Ágoston Gábor AU - Gunstheimer, Hans AU - Fläschner, Gotthold AU - Horváth, Róbert TI - Hydrodynamic function and spring constant calibration of FluidFM micropipette cantilevers JF - MICROSYSTEMS & NANOENGINEERING J2 - MICROSYST NANOENG VL - 10 PY - 2024 PG - 10 SN - 2055-7434 DO - 10.1038/s41378-023-00629-6 UR - https://m2.mtmt.hu/api/publication/34556904 ID - 34556904 LA - English DB - MTMT ER - TY - JOUR AU - Markondeya, Raj Pulugurtha AU - Bonyár, Attila TI - Packaging at Nanoscale Will Advance Future Heterogeneous System Integration JF - IEEE NANOTECHNOLOGY MAGAZINE J2 - IEEE NANOTECH MAGAZINE PY - 2024 SN - 1932-4510 DO - 10.1109/MNANO.2024.3358688 UR - https://m2.mtmt.hu/api/publication/34556900 ID - 34556900 N1 - In press LA - English DB - MTMT ER - TY - JOUR AU - Szántó, Géza Levente AU - Pritzke, Pia AU - Kluitmann, Jonas Jakobus AU - Köhler, Johann Michael AU - Csáki, Andrea AU - Fritzsche, Wolfgang AU - Csarnovics, István AU - Bonyár, Attila TI - Optimization of the Bulk Refractive Index Sensitivity of Silver NanoPrisms JF - ADVANCED OPTICAL MATERIALS J2 - ADV OPT MATER PY - 2024 PG - 11 SN - 2195-1071 DO - 10.1002/adom.202302967 UR - https://m2.mtmt.hu/api/publication/34556895 ID - 34556895 AB - The sensitivity and optical properties of silver nanoprisms (triangular plates with round‐truncated corners) are investigated in this paper. Results of boundary element method simulations are compared with experimental results and literature data. Based on electron microscopy images of the synthesized nanoprisms, a single‐particle model is set up for simulations with three running parameters: edge length, thickness, and roundness (defined as the radius of the circumscribed circle divided by the edge length). These geometric parameters can be optimized during chemical synthesis to create sensors with improved sensitivity. The effect of biomolecular layers is also investigated. As a novel approach to improve the agreement between the simulated and experimentally measured extinction spectra, the single‐particle model is extended to consider the variation of the prisms' parameters in the form of distributions. The resulting extinction cross‐section spectra correspond well with the experimental data. The calculated bulk refractive index sensitivity is 670 nm/RIU (RIU stands for refractive index unit) for the single particle model (length = 150 nm, thickness = 10 nm, and roundness = 0.1), while (690 ± 5) nm/RIU for the extended model. The presented model and obtained relations between sensitivity and geometry can be effectively used to design and optimize the fabrication technologies for silver nanoprism‐based sensing applications. LA - English DB - MTMT ER - TY - JOUR AU - Renkó, József Bálint AU - Romanenko, Alekszej AU - Bíró, Tamás AU - Szabó, Péter János AU - Petrik, Péter AU - Bonyár, Attila TI - Investigating the kinetics of layer development during the color etching of low-carbon steel with in-situ spectroscopic ellipsometry JF - HELIYON J2 - HELIYON VL - 10 PY - 2024 IS - 3 PG - 15 SN - 2405-8440 DO - 10.1016/j.heliyon.2024.e25271 UR - https://m2.mtmt.hu/api/publication/34555877 ID - 34555877 LA - English DB - MTMT ER - TY - CHAP AU - Bonyár, Attila AU - Lednický, T. AU - Kovács, Rebeka AU - Zangana, Shireen ED - Di Bartolomeo, Antonio ED - Martucciello, Nadia ED - Giubileo, Filippo TI - Development and application of surface nanocomposites based on tightly packed, hexagonally arranged nanoparticle ensembles T2 - 18th IEEE Nanotechnology Materials and Devices Conference, NMDC 2023 PB - Institute of Electrical and Electronics Engineers (IEEE) CY - Piscataway (NJ) SN - 9798350335460 PY - 2023 SP - 458 EP - 459 PG - 2 DO - 10.1109/NMDC57951.2023.10343621 UR - https://m2.mtmt.hu/api/publication/34516453 ID - 34516453 N1 - Budapest University of Technology and Economics, The Wigner Research Centre for Physics, Faculty of Electrical Engineering and Informatics, Department of Electronics Technology, Budapest, Hungary Central European Institute of Technology, Brno University of Technology, Purkyňová 123, Brno, 612 00, Czech Republic Export Date: 14 March 2024 Correspondence Address: Bonyár, A.; Budapest University of Technology and Economics, Hungary; email: bonyar.attila@vik.bme.hu AB - In this work, the development of a surface nanocomposite based on tightly packed, hexagonally arranged nanoparticles, and their application for localized surface plasmon resonance (LSPR) sensing and surface-enhanced Raman spectroscopy (SERS) will be presented. A fabrication technology is introduced to create the tightly packed nanoparticle arrangements on large surface areas (in the cm2 range), where the size (diameter, D0) and interparticle distance (D) of the nanoparticles can be controlled in the 0.1< D/D0 < 0.8 range. The importance of plasmonic coupling in such tightly packed nanoparticle arrangements is highlighted with numerical simulations, which were used to study and optimize the arrangements. The application of this novel surface nanocomposite for the label-free detection of short DNA fragments with LSPR, and Rhodamine 6G detection with SERS will also be demonstrated and discussed. © 2023 IEEE. LA - English DB - MTMT ER - TY - CHAP AU - Kovács, Rebeka AU - Bonyár, Attila ED - Di Bartolomeo, Antonio ED - Martucciello, Nadia ED - Giubileo, Filippo TI - Investigation of the Refractive Index Sensitivity of Hexagonally Arranged Gold Nanoparticles With Finite Element Method (FEM) T2 - 18th IEEE Nanotechnology Materials and Devices Conference, NMDC 2023 PB - Institute of Electrical and Electronics Engineers (IEEE) CY - Piscataway (NJ) SN - 9798350335460 PY - 2023 SP - 309 EP - 312 PG - 4 DO - 10.1109/NMDC57951.2023.10344101 UR - https://m2.mtmt.hu/api/publication/34516451 ID - 34516451 N1 - Export Date: 14 March 2024 Correspondence Address: Kovács, R.; Budapest University of Technology and Economics, Hungary; email: kovacsrebeka@edu.bme.hu AB - In biosensing, label-free detection techniques have the advantage of a shorter analysis time and can be more cost-effective. In this paper a localized surface plasmon resonance (LSPR) sensor based on hexagonally arranged ellipsoidal gold nanoparticles is designed and investigated by finite element method (FEM) via COMSOL Multiphysics. The wave optics module was used to investigate the relationship between the geometrical properties of the nanoparticle arrangements and their refractive index sensitivity. The effect of different linearly and circularly polarized light was further investigated. The purpose of this work is to optimize the arrangement of experimentally realizable ellipsoidal gold nanoparticle arrangements to maximize the performance of the LSPR-based sensor device and to compare the simulation results with experimentally obtained sensitivities, and present detailed geometrical optimizations. © 2023 IEEE. LA - English DB - MTMT ER - TY - GEN AU - Farkas, Enikő AU - Kovács, Kinga Dóra AU - Péter, Beatrix AU - Bonyár, Attila AU - Kurunczi, Sándor AU - Székács, Inna AU - Horváth, Róbert TI - Controlling Live Cell Adhesion through Characterization of Biofunctionalized Surfaces using Label-Free Biosensors PY - 2023 UR - https://m2.mtmt.hu/api/publication/34484723 ID - 34484723 LA - English DB - MTMT ER - TY - GEN AU - Horváth, Róbert AU - Bonyár, Attila AU - Székács, Inna AU - Kurunczi, Sándor AU - Péter, Beatrix AU - Kovács, Kinga Dóra AU - Farkas, Enikő TI - Biomaterial surfaces for regulating live cell adhesion characterized by label-free biosensors PY - 2023 UR - https://m2.mtmt.hu/api/publication/34484700 ID - 34484700 LA - English DB - MTMT ER - TY - JOUR AU - Bonyár, Attila AU - Borók, Alexandra AU - Szalóki, Melinda AU - Veres, Miklós AU - Rigó, István TI - Thermal Treatments on a UDMA-TEGDMA Nanocomposite Doped with Gold Nanorods Investigated by In-situ Raman-spectroscopy JF - IEEE TRANSACTIONS ON NANOTECHNOLOGY J2 - IEEE T NANOTECHNOL VL - 22 PY - 2023 SP - 628 EP - 633 PG - 6 SN - 1536-125X DO - 10.1109/TNANO.2023.3314922 UR - https://m2.mtmt.hu/api/publication/34162030 ID - 34162030 N1 - Export Date: 08 March 2024 LA - English DB - MTMT ER - TY - JOUR AU - Szalóki, Melinda AU - Csarnovics, István AU - Bonyár, Attila AU - Ungor, Ditta Anita AU - Csapó, Edit AU - Sápi, András AU - Hegedűs, Csaba TI - Plasmonic Effect of Gold-Patchy Silica Nanoparticles on Green Light-Photopolymerizable Dental Resin JF - NANOMATERIALS J2 - NANOMATERIALS-BASEL VL - 13 PY - 2023 IS - 18 PG - 16 SN - 2079-4991 DO - 10.3390/nano13182554 UR - https://m2.mtmt.hu/api/publication/34140805 ID - 34140805 AB - A low ratio of polymerization is a major problem in resin-based composites. In this paper, the plasmonic effect of gold-covered silica nanoparticles on the physicochemical and mechanical properties of bisphenol A diglycidyl dimethacrylate (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA) and urethane dimethacrylate (UDMA) green light-photopolymerizable dental resin was investigated at an intensity of 1.4 mW/cm2 for 40 s. Transmission electron microscopy (TEM) showed silica of about 350 nm covered with 12–15 nm gold nanoparticles (Au NPs) at 100% nominal coverage. Five different concentrations of bare and patchy silica particles were used; in the latter composite, the calculated Au wt% were 0.0052 wt%, 0.0104 wt%, 0.0208 wt%, 0.04160 wt%, and 0.0823 wt%. The plasmon peak of patchy silica-filled nanocomposite overlapped with the absorption of Irgacure 784 photoinitiator and green LED light emission peak. The effect of plasmon-enhanced polymerization achieved with green light illumination was analyzed using diametral tensile strength (DTS), differential scanning calorimetry (DSC), surface plasmon resonance imaging (SPRi), and degree of conversion (DC) based on Raman spectroscopy. The values of the Au NP with 0.0208 wt% was found to be maximum in all the measured data. Based on our result, it can be concluded that the application of patchy silica particles in dental resin can improve the polymerization ratio and the mechanical parameters of the composite. LA - English DB - MTMT ER -