CAS 7440-05-3 Pd nanopowder Ultrafine Palladium as catalyst
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
We can supply different size products of niobium silicide powder according to client's requirements. Size:1-3um; Purity:99.5%;Shape:granular CAS No:12034-80-9;ENINEC No.:234-812-3
Ni2Si particle,99.5% purity,granular shape,is used for Microelectronic integrated circuit, nickel silicide film,etc. Size:1-10um; CAS No:12059-14-2;ENINEC No.:235-033-1
With the development of integrated circuit (IC) technology, the scaling of silicon-based metal oxide semiconductor (MOS) field-effect transistors (FETs) is approaching their fundamental physical limits. Carbon nanotubes (CNTs) are considered promising materials in the post silicon era due to their atomic thickness and unique electrical properties, with the potential to improve transistor performance while reducing power consumption. High purity aligned carbon nanotubes (A-CNT) are an ideal choice for driving advanced ICs due to their high current density. However, when the channel length (Lch) decreases below 30nm, the performance of single gate (SG) A-CNT FET significantly decreases, mainly manifested as deteriorating switching characteristics and increased leakage current. This article aims to reveal the mechanism of performance degradation in A-CNT FET through theoretical and experimental research, and propose solutions. Academician Peng Lianmao, researcher Qiu Chengguang, and researcher Liu Fei from Peking University overcame the electrostatic coupling between carbon nanotubes (CNTs) through a double gate structure to achieve the Boltzmann switching limit of carbon nanotube transistors (CNT-FET). Research has found that high-density aligned carbon nanotubes (A-CNT) exhibit significant band gap narrowing (BGN) due to stacking in traditional single gate configurations, thereby affecting their inherent quasi one dimensional electrostatic advantages. Through theoretical simulation and experimental verification, an effective dual gate structure has been proposed, which can significantly reduce the BGN effect, achieve the subthreshold swing (SS) of A-CNT FET to the Boltzmann thermal emission limit of 60mV/decade, and achieve a switching current ratio exceeding 10 ^ 6. In addition, the prepared 10nm ultra short gate A-CNT dual gate FET exhibits excellent performance such as high saturation current (over 1.8mA/μ m), high peak transconductance (2.1mS/μ m), and low static power consumption (10nW/μ m), meeting the requirements of advanced integrated circuits. The related research results were published in ACS Nano under the title "Realizing Boltzmann Switching Limit in Carbon Nanotube Transistors through Combining Intertube Electrostatic Coupling". SAT NANO is a best supplier of carbon nanotube powder in China, we can supply SWCNT, MWCNT, DWCNT powder, if you have any enquiry of carbon nanotube powder, please feel free to contact us at admin@satnano.com
Read MoreIn recent years, with the continuous development and popularization of wireless communication technology, the application scenarios of wireless communication have become increasingly widespread, such as mobile phone communication, wireless data transmission, satellite navigation, Internet of Things, etc. In wireless communication systems, antennas play a crucial role in the performance and reliability of the system as important components for receiving and transmitting wireless signals. According to China Powder Network, there are three main ways to improve antenna performance: first, optimizing packaging technology, such as multi-layer circuit board packaging technology and semiconductor packaging technology; The second is to optimize the antenna structure, such as slotting, folding, short circuiting branches, and changing the feeding method of traditional antenna structures; The third is to optimize the antenna substrate material, such as using material composites, improving processes, and developing new materials to enhance the performance of antenna substrate materials. The first two technological means have been fully developed and gradually become bottlenecks, while there is still significant room for improvement in the performance of antenna substrate materials. In addition, as the packaging design and structural optimization of antennas are closely related to substrate materials, the development of excellent substrate materials is a key part of achieving antenna performance optimization. In May of this year, Huawei Technologies Co., Ltd. and the University of Electronic Science and Technology of China applied for a patent titled "A Magnetic Hybrid Material and Its Preparation Method, Polymer Composite Material, Antenna, and Electronic Equipment". The magnetic hybrid material includes a mixture of magnetic powder and viscosity regulating powder. According to the patent description, due to its high magnetic permeability and low loss characteristics, ferrite magnetic powder materials have become one of the key basic materials for antenna substrates, high-frequency microwave circuit boards, inductors, filters, and other devices in electronic devices. In related technologies, ferrite magnetic powder materials with high magnetic permeability and low loss characteristics are the key basic materials for antenna substrates. Therefore, in order to achieve low signal transmission loss, ferrite magnetic powder materials are used in antenna materials, which can reduce the physical size of the antenna while avoiding the adverse effects of using high dielectric constant magnetic powder materials on antenna operation, thereby improving integration. However, the above-mentioned ferrite material adopts a ferrite monazite structure, and the resonance peak position of the ferrite material is controlled by doping, so that the ferrite material is completely sintered into an antenna substrate for use. When sintering the ferrite material into an antenna substrat...
Read MoreCurrently, the photovoltaic industry is accelerating its iteration towards efficient N-type battery technology, and heterojunction (HJT) cells have become a highly promising development direction due to their outstanding advantages such as high conversion efficiency, low temperature coefficient, and high bilayer ratio. However, due to the double-sided power generation structure used by HJT, low-temperature silver paste needs to be coated on both sides of the battery, resulting in much higher silver powder consumption than single-sided PERC cells. The high cost of silver powder has become a key bottleneck restricting its large-scale commercialization and further cost reduction. Driven by the core goal of continuously promoting "cost reduction and efficiency improvement" in the photovoltaic industry, it is urgent to find a "replacement" for silver powder. Compared to silver powder, copper powder demonstrates a huge cost advantage at its extremely low price. However, the biggest inherent disadvantage of copper powder is its high susceptibility to oxidation. In electrode preparation and usage environments, its conductivity deteriorates sharply due to oxidation, making it difficult to meet the long-term reliable operation requirements of photovoltaic cells. Therefore, the silver coated copper powder technology, which combines cost advantages and potential performance guarantees, has emerged as an important exploration direction in the cost reduction path of double-sided structured batteries such as HJT. Silver coated copper powder is formed by uniformly and continuously coating a layer of silver shell ranging from tens to hundreds of nanometers on the surface of copper powder, forming a typical "core-shell structure". This special structure allows the copper core to occupy the majority of the powder mass, significantly reducing the consumption of expensive silver metal. On the other hand, it endows silver copper powder with excellent properties similar to pure silver powder: 1. Antioxidant activity The dense and chemically inert silver layer on the surface of silver coated copper powder acts as a physical barrier, effectively isolating the internal copper core from the external environment (oxygen, moisture), thereby significantly delaying the oxidation process of the copper core. 2. Conductivity: As a conductive filler in electrodes, silver coated copper powder can conduct current through an externally wrapped silver layer. In theory, a well coated silver shell ensures effective conduction of current on the electrode surface, providing high conductivity close to the surface of silver powder. With the acceleration of technological iteration, especially in collaboration with emerging low-temperature battery processes such as HJT, the industrial application potential of silver coated copper powder is gradually emerging. However, the introduction of copper element has raised concerns about its long-term reliability. How to ensure that copper does not oxi...
Read MoreCarbon nanotubes powder, as one of the strongest structural materials in theory, can achieve mechanical properties of hundreds of GPa level strength and TPa level modulus per single strand. However, the realization of such outstanding performance in macroscopic materials always faces the "scale paradox": the strength of macroscopic carbon nanotube fibers or structural components is much lower than the theoretical value of a single CNT, because the nanotubes that make up these structures generally have insufficient length, uneven arrangement, and structural defects, and the connection method often relies on weak shear forces. Although various strategies have been attempted to enhance connections through covalent bonding repair or energy beam welding, they all face bottlenecks such as structural damage, high costs, or complex operations that are difficult to engineer. Recently, Professor Wei Fei's team from Tsinghua University jointly proposed and experimentally verified a Van der Waals welding method based on TiO ₂ nanoparticles, which achieved almost non-destructive macroscopic CNT welding at normal pressure and room temperature for the first time. The joint strength is close to the theoretical limit of a single CNT, marking another key breakthrough in the "transition from experimental to engineering" of carbon nanomaterials. This technology is based on the Fast Chemical Vapor Deposition Self Assembly (FCVDS) process, which can accurately deposit nano-sized TiO ₂ particles onto the overlapping area of CNT bundles in just a few seconds, serving as a "nano brazing material". Unlike traditional welding that relies on atomic diffusion or high-temperature covalent reconstruction, this method purely relies on van der Waals forces and interface friction to achieve connection, thus avoiding damage to the tube wall structure caused by high-energy beam irradiation or excited state generation. More importantly, by designing deposition parameters and particle size distribution reasonably, effective welding can be achieved with only about 1 wt% of "brazing material", maximizing the preservation of CNT's original low-density advantage. This lightweight welding method provides a practical and feasible engineering implementation path for carbon nanotubes in fields such as aerospace, military, and flexible structural materials that are extremely sensitive to comparative strength in the future. This study not only proposes a new CNT welding technology that combines strength preservation, structural integrity, weight control, and operational feasibility, but also comprehensively demonstrates the strategy from mechanical mechanisms, parameter models, to engineering experiments. While achieving non-destructive amplification of the mechanical properties of carbon nanotubes, it provides key technical support for applications such as high-strength fiber materials, flexible devices, and extreme structural components. In the future, if this method can be linked with indus...
Read MoreThe 14th Shenzhen International Thermal and Heat Dissipation Materials and Equipment Exhibition (CIME2025) will be held from June 4-6, 2025 at the Shenzhen International Convention and Exhibition Center. The exhibition area is 20000 square meters, with 500 exhibitors, 30 academic presentations, and 30000 professional visitors. The CIME International Thermal Insulation and Heat Dissipation Exhibition, founded in Shenzhen in 2013, has undergone more than ten years of development and resource accumulation, and has become a well-known and authoritative industry event in the field of thermal management thermal insulation and heat dissipation. It has now developed into the June Shenzhen Exhibition and the December Shanghai Exhibition, touring the two places and deeply discussing the changes and development of thermal management thermal insulation and heat dissipation with local governments, industry associations, industrial parks, partners, and industry elites, and has received warm responses. As an industry event, CIME Exhibition looks forward to everyone joining hands with CIME Exhibition to continue moving forward together, creating brilliance and providing customers with higher quality, more professional, and more comprehensive one-stop solutions. With the advancement of consumer electronics, 5G, and artificial intelligence XR、 Against the backdrop of continuous technological penetration and upgrading in fields such as data centers, the Internet of Things, power batteries, energy storage, and Industry 4.0, the miniaturization and continuous increase in power density of electronic devices have led to rapid accumulation of heat energy, weakened safety, and shortened service life. With the continuous advancement of technology, the demand for thermal management, heat conduction, and heat dissipation is also constantly increasing, and the market size is growing exponentially. This has brought enormous potential and commercial cooperation space to the thermal management, heat conduction, and heat dissipation industry. In order to further promote communication and interaction in the thermal conductivity and heat dissipation industry, strengthen the awareness of communication and cooperation in China's thermal conductivity and heat dissipation industry, and achieve mutual promotion and common development, the 14th Shenzhen International Thermal Conductivity and Heat Dissipation Materials Exhibition and Development Summit Forum, hosted by Bohan Exhibition&Liyue Exhibition, will be held from June 4th to 6th, 2025 at the Shenzhen International Convention and Exhibition Center (Bao'an New Hall). The conference aims to establish a communication platform for technical exchange and information exchange in the field of thermal conductive materials, promoting breakthroughs in technology and industrial development in the thermal conductive materials industry. The conference warmly welcomes experts, scholars, researchers, and business representatives from relevan...
Read MoreDuring the healing process of infectious wounds, bacterial infection, persistent oxidative stress, and long-term inflammation are the main obstacles. Developing a multifunctional wound dressing that can effectively eliminate bacteria, reduce oxidative stress, alleviate inflammation, and regulate the immune microenvironment has important clinical significance. On March 8, 2025, the Chemical Engineering Journal reported that researchers have developed a compound containing epigallocatechin gallate (EGCG) and Ag2S@MoS2 The injectable multifunctional hydrogel of nano tablet has excellent anti-inflammatory, antioxidant and synergistically enhanced antibacterial ability, which can promote the healing of infected wounds by regulating the polarization of macrophages. In this work, researchers grafted EGCG onto sodium alginate oxide (OAlg) through a phenolic condensation reaction to obtain a sodium alginate EGCG complex (OAE), and then Ag2S@MoS2 Nanosheets were introduced into the hydrogel of OAE and carboxymethyl chitosan (CMCS) to form a multifunctional hydrogel with photothermal effect (NSOAEC gel). The NSOAEC gel showed good photothermal activity under near-infrared radiation. The free radical scavenging experiment proved that OAE could effectively scavenge superoxide anion (O2-), ABTS and DPPH free radicals, showing excellent antioxidant performance. Further in vitro studies showed that NSOAEC gel could effectively alleviate oxidative stress in cells, reduce the expression of inflammatory factors and enhance the expression of anti-inflammatory factors, and promote the polarization of macrophages from M1 to M2. due to Ag2S@MoS2 Nanosheets have excellent photo thermal conversion efficiency, which makes NSOAEC gel show synergistic antibacterial effect under NIR irradiation, and can effectively kill Escherichia coli and Staphylococcus aureus. In this study, a multifunctional NSOAEC gel was prepared by combining bioactive molecules with the photothermal effect, which synergistically enhanced the antibacterial and immunomodulatory abilities, providing a new therapeutic strategy for the treatment of bacterial infected wounds. SAT NANO is a best supplier of catalyst in China, we can offer Silver sulfide quantum dots liquid Ag2S for customers to do research, if you have any enquiry, please contact us at admin@satnano.com
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