Revisions Log

A log of revisions to articles and news stories.

May 8 2025 - Image updated for Lovis 2001 Module

Lovis 2001 – An Advanced Rolling & Falling Ball Viscometer

Mar 17 2025 - The updated article shifts its focus from a broad, curiosity-driven discussion to a more technical and structured exploration of carbon nanotubes (CNTs). It removes historical context and speculative applications, such as space elevators, and instead delves deeper into the atomic structure of CNTs, explaining chirality, chiral vectors, and different structural models. The properties section is significantly expanded, providing precise data on tensile strength, thermal and electrical conductivity, and flexibility, making it more relevant for research-oriented readers. While the previous version explored potential uses in various industries, the new article prioritizes the fundamental science behind CNTs.

What is a Carbon Nanotube? Structure and Properties

Mar 6 2025 - The updated article shifts focus from a broad historical overview to a more structured, technical explanation of semiconductor properties and functionality. Instead of emphasizing the history of semiconductor discovery, the new version prioritizes how semiconductors work, their key properties, and their applications in modern electronics. The revised version explains band theory, doping, and charge carrier behavior in greater detail, offering a stronger scientific foundation. This replaces the previous version’s generalized historical introduction with a more structured technical approach. The new version clearly defines conductivity, doping types, and how semiconductors toggle between insulating and conducting states, providing a deeper look at semiconductor behavior. CTAs and a video have been added to encourage further exploration of semiconductor applications.

What Is a Semiconductor and How Does It Work?

Feb 24 2025 - The new article provides a more structured and research-driven analysis of China’s nanotechnology market, emphasizing its shift from labor-intensive manufacturing to innovation-driven industries. It expands on key organizations such as the National Center for Nanoscience and Technology (NCNST) and upcoming events like ChinaNANO 2025, reflecting China’s increasing investment in nanoscience. The Nanotechnology Companies in China section now includes more technical details on firms like Arry Nano and Timesnano, highlighting their advancements in CNT production and nanomaterials research. The academic and research landscape has also been updated, incorporating Tsinghua University’s Nano Fabrication Facility and its AI-driven nanotechnology programs. New research highlights from 2023–2024 showcase breakthroughs in cancer diagnostics, energy storage, eco-friendly nanogenerators, and quantum communication. The revised article also integrates China’s 2024 R&D investment of 3.6 trillion yuan, underscoring its focus on AI-driven nanomanufacturing and quantum technology. Overall, the update provides a more forward-looking perspective, positioning China as a global leader in nanotechnology innovation.

Nanotechnology in China: Market Report

Feb 5 2025 - The new article provides a more structured and technical discussion of nanotechnology’s role in space exploration, expanding on its impact across multiple domains. It introduces specific material properties and their advantages, such as CNTs’ high tensile strength and graphene’s thermal conductivity, enhancing the technical depth of the content. The section on spacecraft materials now includes NASA’s Super Lightweight Aerospace Composites (SAC) project, adding real-world relevance. Protective equipment and spacesuits are covered in greater detail, incorporating recent research on boron nitride nanotubes and phase-change materials. The section on life support systems elaborates on air and water purification, introducing metal-organic frameworks (MOFs) for CO₂ capture and graphene oxide membranes for water filtration. The robotics segment emphasizes AI integration in space exploration, with an example of NASA’s Perseverance Rover using nanoscale engineering. The conclusion highlights the broader potential of nanotechnology in deep-space missions and interstellar travel while emphasizing the need for scalable nanomaterial production and interdisciplinary collaboration.

The Role of Nanotechnology in Space Exploration

Jan 6 2025 - Old Title: Electron Beam Lithography (EBL) – A Basic Look At The EBL NanoLithographic Technique, Applications and Resolution. New Title: What is Electron-Beam Lithography?

What is Electron-Beam Lithography?

Jan 6 2025 - Expanded introduction to include e-beam lithography's applications across materials science, biophotonics, and quantum research. Highlighted its adaptability for patterning on unconventional surfaces like optical fibers and porous membranes. Added detailed explanation of the electron beam generation, focusing, and modulation by electron-optical components. Included descriptions of positive and negative resists' chemical reactions during exposure. Added substrate preparation details, such as soft bake conditions and resist application via spin coating. Enhanced development and etching explanations with examples (e.g., PMMA developers and etching methods like RIE). Separated serial and parallel writing techniques into distinct sections. Discussed parallel writing systems like Multiple E-Beam Direct-Write (MEBDW) and their potential for industrial-scale applications. Highlighted MAPPER lithography using 650,000 beamlets for improved throughput. Broadened applications beyond the original to include advancements in microelectronics, photonics, materials science, and healthcare. Detailed challenges like beam alignment and uniformity for parallel writing. Mentioned advancements in throughput to address limitations for high-volume manufacturing.

What is Electron-Beam Lithography?

Nov 26 2024 - The new article provides a broader introduction to 2D materials, including transition metal dichalcogenides (TMDs), borophene, and phosphorene, offering a comprehensive view of the field. Highlights the appeal of 2D materials for energy storage, nanoelectronics, and biomedical applications, whereas the old article focused narrowly on MoS₂ and graphene. The new article organizes content into clear sections: Applications of MoS₂, Direct Band Gap Advantage, Hybrid Systems, and Commercialization, providing a logical progression of ideas. The old article's flow was less structured, mixing comparisons and applications within a single narrative. The updated version discusses: Direct band gap properties of MoS₂ in detail, emphasizing its advantage for optoelectronics. Strain engineering and its role in modifying band gaps, absent in the original. Hybrid MoS₂-graphene systems, illustrating complementary uses rather than rivalry alone. The old article briefly mentioned MoS₂'s band gap but did not explore specific applications in sensors, flexible electronics, or energy storage. The new article elaborates on MoS₂ applications in flexible electronics, energy storage, biomedical applications (these applications were absent or lightly touched upon in the old article). The updated conclusion frames MoS₂ and graphene as complementary materials rather than direct competitors, supported by examples of hybrid systems. The old article framed the relationship more as a rivalry.

Is Molybdenum Disulfide (MoS2) a Serious Rival to Graphene?

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