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In recent years, significant advancements have been made in drug delivery systems using microneedles. Researchers have developed a rocket microneedle drug delivery system that uses a self-propulsion mechanism for deep penetration into the skin and tumor microenvironment. This article discusses the use of rocket microneedles made of mesoporous silica nanoparticles and other materials for the treatment of melanoma, a type of skin cancer.

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.

The principle of thermochromism mainly adjusts the input of solar radiation (wavelength concentrated in 190-3000nm) energy and the output of blackbody energy through windows based on the ambient temperature. Thermochromic materials will change their transparency, absorbance, and color when the temperature changes. Thermochromic can be used as a passive design strategy to adjust near-infrared transmittance while maintaining visible light transmittance, without the need for external energy or manual operation. Therefore, thermochromic smart windows have become a hot research topic in building energy-saving windows due to their simple structure and broad application prospects.

The 16th China International Powder Metallurgy & Hard Alloy Exhibition, also known as PM CHINA, is the flagship event of the global powder metallurgy industry. Since its establishment in 2008, it has grown at an astonishing rate of 30% annually, from a few hundred square meters to a massive 40,000 square meters in 2023. With its extensive international reputation and global influence, PM CHINA has become a must-attend event for companies worldwide.

In the fields of materials science, catalysis, energy and environment, specific surface area is one of the important parameters for measuring material performance. The adsorption efficiency of activated carbon, the activity of catalysts, and the energy storage performance of electrode materials are often closely related to their surface area. The most widely used surface area measurement method currently is BET specific surface area testing. This article will provide a detailed analysis of BET testing from several aspects, including principles, sample preparation, data processing, and precautions.

Are you interested in learning how to analyze XRD patterns? Understanding the experimental conditions and identifying peak positions can provide essential information for interpreting XRD images correctly. In this article, we will guide you through the steps on how to analyze XRD patterns.