Questa è la nostra ultima selezione di pubblicazioni e brevetti in inglese sulle nanotecnologie, tra numerose riviste scientifiche online, classificate e incentrate su nanotecnologie, nanoparticelle, nanomateriali, nanocompositi, punti quantici, nanotubi di carbonio, ingegneria su scala nanometrica, nanofabbricazione e nanoelettronica.
Compact Nonvolatile Reconfigurable Mode Converter by Sb2S3 Embedded in 4H-Silicon-Carbide-on-Insulator Platform
Published on 2025-05-01 by Danfeng Zhu, Junbo Chen, Shaobin Qiu, Dingnan Deng, Jinming Luo @MDPI
Abstract: Nonvolatile switching is emerging and shows potential in integrated optics. A compact nonvolatile reconfigurable mode converter implemented on a 4H-silicon-carbide-on-insulator (4H-SiCOI) platform with a footprint of 0.5 × 1 × 1.8 μm3 is proposed in this study. The functional region features an Sb2S3 film embedded in a 4H-SiC strip waveguide. The functionality is achieved through manipulating the phase state of the Sb2S3. The high refractive index contrast [...]
Our summary: Compact nonvolatile reconfigurable mode converter implemented on a 4H-SiCOI platform with high efficiency mode conversion. Functional region features Sb2S3 film embedded in 4H-SiC strip waveguide, achieving high transmittance and mode purity. Device exhibits robustness and potential for large communication capacity in neuromorphic optical computing.
Nonvolatile, Reconfigurable, Mode Converter, 4H-Silicon-Carbide-on-Insulator
Publication
Ternary Heterojunction Synaptic Transistors Based on Perovskite Quantum Dots
Published on 2025-05-01 by Shuqiong Lan, Jinkui Si, Wangying Xu, Lan Yang, Jierui Lin, Chen Wu @MDPI
Abstract: The traditional von Neumann architecture encounters significant limitations in computational efficiency and energy consumption, driving the development of neuromorphic devices. The optoelectronic synaptic device serves as a fundamental hardware foundation for the realization of neuromorphic computing and plays a pivotal role in the development of neuromorphic chips. This study develops a ternary heterojunction synaptic transistor based on perovskite quantum dots to tackle the critical challenge [...]
Our summary: Development of ternary heterojunction synaptic transistor based on perovskite quantum dots for synaptic weight modulation. Enhanced hysteresis window and effective carrier trapping modulation. Emulation of photonic synaptic behaviors for high-performance optoelectronic synaptic transistors.
Perovskite Quantum Dots, Ternary Heterojunction, Synaptic Transistors, Neuromorphic Computing
Publication
Injectable hydrogel for sustained co-delivery of an antigen and an adjuvant, and uses thereof
Patent published on the 2025-03-13 in WO under Ref WO2025054360 by THE REGENTS OF THE UNIV OF CALIFORNIA [US] (Wang Szu-wen [us], Wang Lu [us], Davies David Huw [us], Ramirez Aaron [us])
Abstract: The disclosure provides for a vaccine depot formulation that comprises a biodegradable thermosensitive hydrogel that has been loaded or embedded with nanoparticles that comprise an antigen and adjuvant, and uses thereof for protecting a subject from an infection or disease.[...]
Our summary: Injectable hydrogel for sustained co-delivery of antigen and adjuvant, protection from infection or disease, biodegradable thermosensitive hydrogel.
hydrogel, sustained release, co-delivery, vaccine depot
Patent
Unlocking the Potential of Na2Ti3O7-C Hollow Microspheres in Sodium-Ion Batteries via Template-Free Synthesis
Published on 2025-03-10 by Yong-Gang Sun, Yu Hu, Li Dong, Ting-Ting Zhou, Xiang-Yu Qian, Fa-Jia Zhang, Jia-Qi Shen, Zhi-Yang Shan, Li-Ping Yang, Xi-Jie Lin @MDPI
Abstract: Layered sodium trititanate (Na2Ti3O7) is a promising anode material for sodium-ion batteries due to its suitable charge/discharge plateaus, cost-effectiveness, and eco-friendliness. However, its slow Na+ diffusion kinetics, poor electron conductivity, and instability during cycling pose significant challenges for practical applications. To address these issues, we developed a template-free method to synthesize Na2Ti3O7-C hollow microspheres. The synthesis began with polymerization-induced colloi[...]
Our summary: Unlocking potential of Na2Ti3O7-C hollow microspheres in sodium-ion batteries through template-free synthesis, enhancing cycling performance and rate capability, new strategy for high-performance anodes.
Na2Ti3O7-C, hollow microspheres, template-free synthesis, sodium-ion batteries
Publication
Bridging the Near- and Mid-Infrared
Published on 2025-03-10 by Zian Cai, Wenyao Zhang, Qi Kang, Hongfu Huang, Xin Xiang, Shunbin Lu, Qiao Wen @MDPI
Abstract: Quasi-one-dimensional (quasi-1D) transition metal chalcogenides (TMCs), a subclass of low-dimensional materials, have attracted significant attention due to their unique optical and electronic properties, making them promising candidates for nonlinear photonics. In this work, NbTe4, a quasi-1D transition metal tetrachalcogenide, was synthesized and employed for the first time as a broadband saturable absorber (SA) for pulsed laser applications. The nonlinear optical (NLO) properties of NbTe4 wer[...]
Our summary: NbTe4 synthesized as broadband saturable absorber for pulsed laser applications, characterized for NLO properties at different wavelengths, successfully used for PQS and mode-locked operation in fiber lasers.
transition metal chalcogenides, nonlinear photonics, saturable absorber, quasi-1D
Publication
The Chemical Deformation of a Thermally Cured Polyimide Film Surface into Neutral 1,2,4,5-Benzentetracarbonyliron and 4,4′-Oxydianiline to Remarkably Enhance the Chemical–Mechanical Planarization Polishing Rate
Published on 2025-03-10 by Man-Hyup Han, Hyun-Sung Koh, Il-Haeng Heo, Myung-Hoe Kim, Pil-Su Kim, Min-Uk Jeon, Min-Ji Kim, Woo-Hyun Jin, Kyoo-Chul Cho, Jinsub Park, Jea-Gun Park @MDPI
Abstract: The rapid advancement of 3D packaging technology has emerged as a key solution to overcome the scaling-down limitation of advanced memory and logic devices. Redistribution layer (RDL) fabrication, a critical process in 3D packaging, requires the use of polyimide (PI) films with thicknesses in the micrometer range. However, these polyimide films present surface topography variations in the range of hundreds of nanometers, necessitating chemical–mechanical planarization (CMP) to achi[...]
Our summary: Rapid advancement of 3D packaging technology requires polyimide films with nanometer-level surface flatness for RDL fabrication. Introducing Fe(NO3)3 into CMP slurries deforms the polyimide film surface, enhancing the chemical-mechanical polishing rate. Optimal Fe(NO3)3 concentration for maximum film removal rate is 0.05 wt%.
polyimide film, chemical-mechanical planarization, Fe(NO3)3, polishing rate
Publication
On-Chip Electrochemical Sensor Based on 3D Graphene Assembly Decorated Ultrafine RuCu Alloy Nanocatalyst for In Situ Detection of NO in Living Cells
Published on 2025-03-08 by Haibo Liu, Kaiyuan Yao, Min Hu, Shanting Li, Shengxiong Yang, Anshun Zhao @MDPI
Abstract: In this work, we developed 3D ionic liquid (IL) functionalized graphene assemblies (GAs) decorated by ultrafine RuCu alloy nanoparticles (RuCu-ANPs) via a one-step synthesis process, and integrated it into a microfluidic sensor chip for in situ electrochemical detection of NO released from living cells. Our findings have demonstrated that RuCu-ANPs on 3D IL-GA exhibit high density, uniform distribution, lattice-shaped arrangement of atoms, and extremely ultrafine size, and possess high electroca[...]
Our summary: Development of a microfluidic sensor chip using 3D graphene assemblies decorated with ultrafine RuCu alloy nanoparticles for in situ electrochemical detection of NO in living cells. The sensor exhibits high sensitivity, fast response time, and excellent biocompatibility, making it suitable for real-time monitoring in physiological conditions.
3D Graphene Assembly, RuCu Alloy Nanocatalyst, On-Chip Electrochemical Sensor, In Situ Detection
Publication
Dual immunodiagnostic chip
Patent published on the 2025-03-06 in WO under Ref WO2025048611 by KOREA BASIC SCIENCE INST [KR] (Nam Ki-hwan [kr], Jeong Bong Jin [kr], Kim Hye Mi [kr], Kim Gyuri [kr], Choi Jong Soon [kr])
Abstract: The present invention provides a dual immunodiagnostic chip. The dual immunodiagnostic chip can be used to observe changes in color and electrical signal, through a single sample injection. Thus, the presence or absence of a target material can be rapidly and accurately detected. The dual immunodiagnostic chip of the present invention comprises: an injection unit into which a composite nanostructure in which a sample, nanoparticles, and a primary bioreceptor are conjugated; a reaction unit coate[...]
Our summary: Dual immunodiagnostic chip for rapid and accurate detection of target materials, observing changes in color and electrical signal through single sample injection, comprising injection unit, reaction unit, electrode unit, and microfluidic channel unit.
immunodiagnostic, chip, color, electrical signal
Patent
