航太奈米技術市場－全球產業規模、佔有率、趨勢、機會、預測：按類型、奈米材料、最終用途、地區和競爭格局分類，2021-2031年

全球航太奈米技術市場預計將從 2025 年的 181.7 億美元成長到 2031 年的 261.7 億美元，複合年成長率為 6.27%。

在這一領域，原子級材料工程被用於製造碳奈米管和奈米複合材料等高性能飛機零件。這些部件旨在提高結構完整性，同時與標準合金相比顯著減輕重量。市場的主要驅動力是提高燃油效率的迫切需求，因為輕量材料能夠直接降低營運成本和碳排放。此外，對在惡劣環境條件下具有卓越耐久性的需求以及整合結構完整性監控感測器的需求也是推動這些尖端材料應用的主要因素。

市場擴張的主要障礙在於大規模生產符合航空級標準的奈米材料高成本且製程複雜。對於努力滿足嚴格安全認證要求的供應商而言，規模化生產是一項重大挑戰。儘管有這些障礙，尖端材料的產業發展趨勢依然樂觀。根據Composites United預測，到上年度，全球碳纖維需求將達到12.65萬噸。如此龐大的需求凸顯了現代航太製造中先進奈米複合材料應用對高強度增強材料的關鍵依賴。

市場促進因素

為最大限度地提高燃油效率，對輕量材料的需求日益成長，這是全球航太奈米技術市場的主要驅動力。航空公司和製造商正積極實施輕量化策略，以最大限度地減少燃油消耗並滿足日益嚴格的排放標準，因此，採用先進的奈米複合材料和奈米碳管至關重要。與傳統的鋁合金相比，這些材料具有更高的強度重量比，能夠顯著降低營運成本。這一趨勢主要受大規模飛機更新換代週期的推動。根據波音公司發布的《2025-2044年商用飛機市場展望》（2025年6月發布），航空業預測未來將長期需要43,600架新型商用飛機，其中約一半預計將用於交付老舊低效的噴射機。

同時，由於商業太空探勘和衛星部署計畫的成長，市場規模正在顯著擴大。在這一領域，奈米技術對於開發輕質結構零件和輻射屏蔽材料至關重要，這些材料能夠在不顯著增加發射重量的情況下承受嚴苛的軌道環境。該領域的經濟規模正在迅速擴張，根據太空基金會於2025年7月發布的《2025年第二季太空報告》顯示，全球太空經濟在2024年將達到創紀錄的6,130億美元。資金的激增正在支持高度依賴先進材料的太空設備的大量生產。據衛星工業協會稱，2025年將有2695顆衛星被部署到軌道上，創歷史新高，凸顯了奈米技術對於頻繁且經濟高效的有效載荷交付的關鍵作用。

市場挑戰

大規模生產航太奈米材料成本高且製程複雜，嚴重阻礙因素了市場成長。製造這些先進零件需要原子級精密工程，難以在滿足安全監管機構嚴格要求的同時實現規模化生產。這項技術壁壘限制了認證供應商的數量，延長了認證流程，導致供應鏈出現嚴重瓶頸。因此，飛機製造商面臨採購成本飆升和材料短缺的困境，延緩了將這些輕量化技術整合到其商用機隊的進程。

這些生產限制正嚴重影響航空業滿足全球激增需求的能力。關鍵高性能材料的供應難以擴大，導致更廣泛的製造停滯，阻礙了下一代飛機的及時交付。據國際航空運輸協會（IATA）稱，「2024年全球民航機訂單積壓量達到創紀錄的17000架以上。」如此龐大的訂單表明，由於生產符合航空標準的尖端材料面臨挑戰，供應鏈僵化有效地抑制了市場擴張，並延緩了這些技術所承諾的運營效率的實現。

市場趨勢

用於電動飛機推進的奈米增強電池技術的進步正迅速成為一股變革性力量，推動航空業從依賴石化燃料向永續電動航空轉型。研究人員正利用固體電解質和矽奈米線陽極，克服傳統儲能系統能量密度的限制。這些技術在顯著提高容量的同時，也避免了液態鋰離子電池帶來的安全隱患。這項技術飛躍對於電動垂直起降（eVTOL）飛機在區域運輸領域的商業性至關重要。根據美國國家航空暨太空總署（NASA）於2025年4月發布的「增強型可充電安全固態電池架構（SABERS）」計劃進度報告，研究人員已實現了超過500瓦時/公斤的能量密度，這是電動飛機在實際飛行距離上實現有效飛行所必需的關鍵性能。

同時，奈米複合材料在航太領域積層製造的應用，正推動供應鏈轉型，實現複雜飛機零件的分散式隨選生產。透過奈米顆粒增強聚合物，製造商可以3D列印出符合飛機嚴格耐久性標準的零件，同時避免傳統鑄造方法帶來的交貨前置作業時間限制和模具成本。這種整合實現了靈活的物流，並降低了維護營運中的庫存管理成本。 2025年12月，Stratasys公司證實，其奈米增強聚合物解決方案已幫助空中巴士公司每年使用3D列印技術生產25,000個經飛行認證的零件，證明了該製造方法的工業成熟度。

目錄

第1章概述

第2章：調查方法

第3章執行摘要

第4章：客戶心聲

第5章：全球航太奈米技術市場展望

• 市場規模及預測
  • 按金額
• 市佔率及預測
  • 按類型（奈米裝置、奈米感測器）
  • 奈米材料按類型分類（奈米顆粒、奈米管、奈米結構材料、奈米複合材料、其他）
  • 依應用領域（航太/國防、民用航空）
  • 按地區
  • 按公司（2025 年）
• 市場地圖

第6章：北美航太奈米技術市場展望

• 市場規模及預測
• 市佔率及預測
• 北美洲：國別分析
  • 美國
  • 加拿大
  • 墨西哥

第7章：歐洲航太奈米技術市場展望

• 市場規模及預測
• 市佔率及預測
• 歐洲：國別分析
  • 德國
  • 法國
  • 英國
  • 義大利
  • 西班牙

第8章：亞太地區航太奈米技術市場展望

• 市場規模及預測
• 市佔率及預測
• 亞太地區：國別分析
  • 中國
  • 印度
  • 日本
  • 韓國
  • 澳洲

第9章：中東和非洲航太奈米技術市場展望

• 市場規模及預測
• 市佔率及預測
• 中東與非洲：國別分析
  • 沙烏地阿拉伯
  • 阿拉伯聯合大公國
  • 南非

第10章：南美洲航太奈米技術市場展望

• 市場規模及預測
• 市佔率及預測
• 南美洲：國別分析
  • 巴西
  • 哥倫比亞
  • 阿根廷

第11章 市場動態

• 促進因素
• 任務

第12章 市場趨勢與發展

• 併購
• 產品發布
• 近期趨勢

第13章：全球航太奈米技術市場：SWOT分析

第14章：波特五力分析

• 產業競爭
• 新進入者的潛力
• 供應商的議價能力
• 顧客權力
• 替代品的威脅

第15章 競爭格局

• The Boeing Company
• Choose Nanotech Corp
• Flight Shield Inc
• Lockheed Martin Corporation
• Meta Materials Inc
• ToughGuard, LLC
• Veelo Technologies, LLC
• Voyager Space Holdings, Inc
• Airbus SE
• RTX Corporation

第16章 策略建議

第17章：關於研究公司及免責聲明

The Global Aerospace Nanotechnology Market is projected to expand from USD 18.17 Billion in 2025 to USD 26.17 Billion by 2031, registering a CAGR of 6.27%. This sector involves engineering materials at the atomic level to produce superior aircraft components, such as carbon nanotubes and nanocomposites, which are designed to improve structural integrity while significantly reducing weight compared to standard alloys. The market is primarily underpinned by the urgent need for enhanced fuel efficiency, as lighter materials directly result in lower operational costs and reduced carbon emissions. Additionally, the requirement for superior durability against extreme environmental conditions and the incorporation of structural health monitoring sensors act as key drivers propelling the adoption of these advanced materials.

A major obstacle hindering market expansion is the high cost and complexity involved in mass-producing nanomaterials to consistent aviation-grade standards. Scalability presents a significant challenge for suppliers striving to meet strict safety certification requirements. Despite these hurdles, the industrial trajectory for advanced materials remains positive. According to 'Composites United', in '2025', 'global demand for carbon fiber reached 126,500 tons for the previous reporting year'. This substantial volume highlights the critical reliance on high-strength reinforcement materials, which serve as the essential foundation for advanced nanocomposite applications in modern aerospace manufacturing.

Market Driver

The escalating demand for lightweight materials to maximize fuel efficiency acts as a primary catalyst for the Global Aerospace Nanotechnology Market. Airlines and manufacturers are aggressively implementing weight-reduction strategies to minimize fuel consumption and adhere to tightening emission standards, necessitating the adoption of advanced nanocomposites and carbon nanotubes. These materials provide superior strength-to-weight ratios compared to traditional aluminum alloys, enabling significant operational cost savings. This trend is driven by a massive fleet renewal cycle; according to Boeing, June 2025, in the 'Commercial Market Outlook 2025-2044', the aviation industry forecasts a long-term demand for 43,600 new commercial aircraft, with nearly half of these deliveries intended to replace older, less efficient jets.

Simultaneously, the expansion of commercial space exploration and satellite deployment programs is substantially widening the market's scope. Nanotechnology is critical in this sector for developing lightweight structural components and radiation-shielding materials that endure harsh orbital environments without adding prohibitive launch mass. The economic scale of this sector is rapidly growing; according to the Space Foundation, July 2025, in 'The Space Report 2025 Q2', the global space economy reached a record $613 billion in 2024. This financial surge supports the high-volume production of space hardware, which relies heavily on advanced materials. According to the Satellite Industry Association, in 2025, the industry deployed a historic 2,695 satellites into orbit during the previous year, underscoring the critical reliance on nanotechnology to enable frequent and cost-effective payload delivery.

Market Challenge

The substantial cost and complexity inherent in mass-producing aerospace-grade nanomaterials act as a severe constraint on market growth. Manufacturing these advanced components requires precise atomic-level engineering that is difficult to scale while maintaining the rigorous consistency mandated by safety regulators. This technical barrier limits the number of qualified suppliers and extends the time required for certification, which in turn creates significant supply chain bottlenecks. Consequently, aircraft manufacturers face inflated procurement costs and material shortages that delay the integration of these weight-saving technologies into commercial fleets.

These production limitations have a measurable impact on the industry's ability to meet surging global demand. The difficulty in scaling up the supply of critical high-performance materials contributes to a broader manufacturing logjam, preventing the timely delivery of next-generation aircraft. According to 'IATA', in '2025', 'the worldwide commercial backlog reached a historic high of more than 17,000 aircraft in 2024'. This extensive backlog illustrates how supply chain rigidities, driven by the challenges of producing advanced materials to aviation standards, are effectively capping market expansion and deferring the operational efficiencies these technologies promise.

Market Trends

The advancement of nano-enhanced batteries for electric aircraft propulsion is rapidly emerging as a transformative force, enabling the shift from fossil-fuel dependence toward sustainable electric aviation. Researchers are overcoming the energy density limitations of traditional storage systems by utilizing solid-state electrolytes and silicon nanowire anodes, which offer significantly higher capacity without the safety risks of liquid lithium-ion cells. This technological leap is essential for making electric vertical takeoff and landing (eVTOL) aircraft commercially viable for regional transport. According to NASA, April 2025, in a status update on the 'Solid-state Architecture Batteries for Enhanced Rechargeability and Safety (SABERS)' project, researchers successfully achieved energy densities exceeding 500 watt-hours per kilogram, a critical performance threshold required to power electric flight over practical distances.

Simultaneously, the utilization of nanocomposites in aerospace additive manufacturing is reshaping supply chains by allowing for the decentralized, on-demand production of complex aircraft components. By reinforcing polymers with nanoparticles, manufacturers can 3D print parts that meet rigorous aviation durability standards while bypassing the lead-time constraints and tooling costs associated with traditional casting methods. This integration supports agile logistics and reduces inventory overhead for maintenance operations. According to Stratasys, December 2025, in a corporate update titled 'Airbus Now 3D Printing Over 25,000 Flight-Ready Plastic Parts Annually', the company confirmed that its nano-enhanced polymer solutions had enabled Airbus to scale production to 25,000 certified flight-ready parts per year, validating the industrial maturity of this manufacturing approach.

Key Market Players

• The Boeing Company
• Choose Nanotech Corp
• Flight Shield Inc
• Lockheed Martin Corporation
• Meta Materials Inc
• ToughGuard, LLC
• Veelo Technologies, LLC
• Voyager Space Holdings, Inc
• Airbus SE
• RTX Corporation

Report Scope

In this report, the Global Aerospace Nanotechnology Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

Aerospace Nanotechnology Market, By Type

• Nano Devices
• Nano Sensors

Aerospace Nanotechnology Market, By Nano Materials

• Nano Particles
• Nano Tubes
• Nano Structured Materials
• Nano Composites
• Others

Aerospace Nanotechnology Market, By End-Use

• Space & Defense
• Commercial Aviation

Aerospace Nanotechnology Market, By Region

• North America
  • United States
  • Canada
  • Mexico
• Europe
  • France
  • United Kingdom
  • Italy
  • Germany
  • Spain
• Asia Pacific
  • China
  • India
  • Japan
  • Australia
  • South Korea
• South America
  • Brazil
  • Argentina
  • Colombia
• Middle East & Africa
  • South Africa
  • Saudi Arabia
  • UAE

Competitive Landscape

Company Profiles: Detailed analysis of the major companies present in the Global Aerospace Nanotechnology Market.

Available Customizations:

Global Aerospace Nanotechnology Market report with the given market data, TechSci Research offers customizations according to a company's specific needs. The following customization options are available for the report:

Company Information

• Detailed analysis and profiling of additional market players (up to five).

Table of Contents

1. Product Overview

• 1.1. Market Definition
• 1.2. Scope of the Market
  • 1.2.1. Markets Covered
  • 1.2.2. Years Considered for Study
  • 1.2.3. Key Market Segmentations

2. Research Methodology

• 2.1. Objective of the Study
• 2.2. Baseline Methodology
• 2.3. Key Industry Partners
• 2.4. Major Association and Secondary Sources
• 2.5. Forecasting Methodology
• 2.6. Data Triangulation & Validation
• 2.7. Assumptions and Limitations

3. Executive Summary

• 3.1. Overview of the Market
• 3.2. Overview of Key Market Segmentations
• 3.3. Overview of Key Market Players
• 3.4. Overview of Key Regions/Countries
• 3.5. Overview of Market Drivers, Challenges, Trends

4. Voice of Customer

5. Global Aerospace Nanotechnology Market Outlook

• 5.1. Market Size & Forecast
  • 5.1.1. By Value
• 5.2. Market Share & Forecast
  • 5.2.1. By Type (Nano Devices, Nano Sensors)
  • 5.2.2. By Nano Materials (Nano Particles, Nano Tubes, Nano Structured Materials, Nano Composites, Others)
  • 5.2.3. By End-Use (Space & Defense, Commercial Aviation)
  • 5.2.4. By Region
  • 5.2.5. By Company (2025)
• 5.3. Market Map

6. North America Aerospace Nanotechnology Market Outlook

• 6.1. Market Size & Forecast
  • 6.1.1. By Value
• 6.2. Market Share & Forecast
  • 6.2.1. By Type
  • 6.2.2. By Nano Materials
  • 6.2.3. By End-Use
  • 6.2.4. By Country
• 6.3. North America: Country Analysis
  • 6.3.1. United States Aerospace Nanotechnology Market Outlook
    • 6.3.1.1. Market Size & Forecast
      • 6.3.1.1.1. By Value
    • 6.3.1.2. Market Share & Forecast
      • 6.3.1.2.1. By Type
      • 6.3.1.2.2. By Nano Materials
      • 6.3.1.2.3. By End-Use
  • 6.3.2. Canada Aerospace Nanotechnology Market Outlook
    • 6.3.2.1. Market Size & Forecast
      • 6.3.2.1.1. By Value
    • 6.3.2.2. Market Share & Forecast
      • 6.3.2.2.1. By Type
      • 6.3.2.2.2. By Nano Materials
      • 6.3.2.2.3. By End-Use
  • 6.3.3. Mexico Aerospace Nanotechnology Market Outlook
    • 6.3.3.1. Market Size & Forecast
      • 6.3.3.1.1. By Value
    • 6.3.3.2. Market Share & Forecast
      • 6.3.3.2.1. By Type
      • 6.3.3.2.2. By Nano Materials
      • 6.3.3.2.3. By End-Use

7. Europe Aerospace Nanotechnology Market Outlook

• 7.1. Market Size & Forecast
  • 7.1.1. By Value
• 7.2. Market Share & Forecast
  • 7.2.1. By Type
  • 7.2.2. By Nano Materials
  • 7.2.3. By End-Use
  • 7.2.4. By Country
• 7.3. Europe: Country Analysis
  • 7.3.1. Germany Aerospace Nanotechnology Market Outlook
    • 7.3.1.1. Market Size & Forecast
      • 7.3.1.1.1. By Value
    • 7.3.1.2. Market Share & Forecast
      • 7.3.1.2.1. By Type
      • 7.3.1.2.2. By Nano Materials
      • 7.3.1.2.3. By End-Use
  • 7.3.2. France Aerospace Nanotechnology Market Outlook
    • 7.3.2.1. Market Size & Forecast
      • 7.3.2.1.1. By Value
    • 7.3.2.2. Market Share & Forecast
      • 7.3.2.2.1. By Type
      • 7.3.2.2.2. By Nano Materials
      • 7.3.2.2.3. By End-Use
  • 7.3.3. United Kingdom Aerospace Nanotechnology Market Outlook
    • 7.3.3.1. Market Size & Forecast
      • 7.3.3.1.1. By Value
    • 7.3.3.2. Market Share & Forecast
      • 7.3.3.2.1. By Type
      • 7.3.3.2.2. By Nano Materials
      • 7.3.3.2.3. By End-Use
  • 7.3.4. Italy Aerospace Nanotechnology Market Outlook
    • 7.3.4.1. Market Size & Forecast
      • 7.3.4.1.1. By Value
    • 7.3.4.2. Market Share & Forecast
      • 7.3.4.2.1. By Type
      • 7.3.4.2.2. By Nano Materials
      • 7.3.4.2.3. By End-Use
  • 7.3.5. Spain Aerospace Nanotechnology Market Outlook
    • 7.3.5.1. Market Size & Forecast
      • 7.3.5.1.1. By Value
    • 7.3.5.2. Market Share & Forecast
      • 7.3.5.2.1. By Type
      • 7.3.5.2.2. By Nano Materials
      • 7.3.5.2.3. By End-Use

8. Asia Pacific Aerospace Nanotechnology Market Outlook

• 8.1. Market Size & Forecast
  • 8.1.1. By Value
• 8.2. Market Share & Forecast
  • 8.2.1. By Type
  • 8.2.2. By Nano Materials
  • 8.2.3. By End-Use
  • 8.2.4. By Country
• 8.3. Asia Pacific: Country Analysis
  • 8.3.1. China Aerospace Nanotechnology Market Outlook
    • 8.3.1.1. Market Size & Forecast
      • 8.3.1.1.1. By Value
    • 8.3.1.2. Market Share & Forecast
      • 8.3.1.2.1. By Type
      • 8.3.1.2.2. By Nano Materials
      • 8.3.1.2.3. By End-Use
  • 8.3.2. India Aerospace Nanotechnology Market Outlook
    • 8.3.2.1. Market Size & Forecast
      • 8.3.2.1.1. By Value
    • 8.3.2.2. Market Share & Forecast
      • 8.3.2.2.1. By Type
      • 8.3.2.2.2. By Nano Materials
      • 8.3.2.2.3. By End-Use
  • 8.3.3. Japan Aerospace Nanotechnology Market Outlook
    • 8.3.3.1. Market Size & Forecast
      • 8.3.3.1.1. By Value
    • 8.3.3.2. Market Share & Forecast
      • 8.3.3.2.1. By Type
      • 8.3.3.2.2. By Nano Materials
      • 8.3.3.2.3. By End-Use
  • 8.3.4. South Korea Aerospace Nanotechnology Market Outlook
    • 8.3.4.1. Market Size & Forecast
      • 8.3.4.1.1. By Value
    • 8.3.4.2. Market Share & Forecast
      • 8.3.4.2.1. By Type
      • 8.3.4.2.2. By Nano Materials
      • 8.3.4.2.3. By End-Use
  • 8.3.5. Australia Aerospace Nanotechnology Market Outlook
    • 8.3.5.1. Market Size & Forecast
      • 8.3.5.1.1. By Value
    • 8.3.5.2. Market Share & Forecast
      • 8.3.5.2.1. By Type
      • 8.3.5.2.2. By Nano Materials
      • 8.3.5.2.3. By End-Use

9. Middle East & Africa Aerospace Nanotechnology Market Outlook

• 9.1. Market Size & Forecast
  • 9.1.1. By Value
• 9.2. Market Share & Forecast
  • 9.2.1. By Type
  • 9.2.2. By Nano Materials
  • 9.2.3. By End-Use
  • 9.2.4. By Country
• 9.3. Middle East & Africa: Country Analysis
  • 9.3.1. Saudi Arabia Aerospace Nanotechnology Market Outlook
    • 9.3.1.1. Market Size & Forecast
      • 9.3.1.1.1. By Value
    • 9.3.1.2. Market Share & Forecast
      • 9.3.1.2.1. By Type
      • 9.3.1.2.2. By Nano Materials
      • 9.3.1.2.3. By End-Use
  • 9.3.2. UAE Aerospace Nanotechnology Market Outlook
    • 9.3.2.1. Market Size & Forecast
      • 9.3.2.1.1. By Value
    • 9.3.2.2. Market Share & Forecast
      • 9.3.2.2.1. By Type
      • 9.3.2.2.2. By Nano Materials
      • 9.3.2.2.3. By End-Use
  • 9.3.3. South Africa Aerospace Nanotechnology Market Outlook
    • 9.3.3.1. Market Size & Forecast
      • 9.3.3.1.1. By Value
    • 9.3.3.2. Market Share & Forecast
      • 9.3.3.2.1. By Type
      • 9.3.3.2.2. By Nano Materials
      • 9.3.3.2.3. By End-Use

10. South America Aerospace Nanotechnology Market Outlook

• 10.1. Market Size & Forecast
  • 10.1.1. By Value
• 10.2. Market Share & Forecast
  • 10.2.1. By Type
  • 10.2.2. By Nano Materials
  • 10.2.3. By End-Use
  • 10.2.4. By Country
• 10.3. South America: Country Analysis
  • 10.3.1. Brazil Aerospace Nanotechnology Market Outlook
    • 10.3.1.1. Market Size & Forecast
      • 10.3.1.1.1. By Value
    • 10.3.1.2. Market Share & Forecast
      • 10.3.1.2.1. By Type
      • 10.3.1.2.2. By Nano Materials
      • 10.3.1.2.3. By End-Use
  • 10.3.2. Colombia Aerospace Nanotechnology Market Outlook
    • 10.3.2.1. Market Size & Forecast
      • 10.3.2.1.1. By Value
    • 10.3.2.2. Market Share & Forecast
      • 10.3.2.2.1. By Type
      • 10.3.2.2.2. By Nano Materials
      • 10.3.2.2.3. By End-Use
  • 10.3.3. Argentina Aerospace Nanotechnology Market Outlook
    • 10.3.3.1. Market Size & Forecast
      • 10.3.3.1.1. By Value
    • 10.3.3.2. Market Share & Forecast
      • 10.3.3.2.1. By Type
      • 10.3.3.2.2. By Nano Materials
      • 10.3.3.2.3. By End-Use

11. Market Dynamics

• 11.1. Drivers
• 11.2. Challenges

12. Market Trends & Developments

• 12.1. Merger & Acquisition (If Any)
• 12.2. Product Launches (If Any)
• 12.3. Recent Developments

13. Global Aerospace Nanotechnology Market: SWOT Analysis

14. Porter's Five Forces Analysis

• 14.1. Competition in the Industry
• 14.2. Potential of New Entrants
• 14.3. Power of Suppliers
• 14.4. Power of Customers
• 14.5. Threat of Substitute Products

15. Competitive Landscape

• 15.1. The Boeing Company
  • 15.1.1. Business Overview
  • 15.1.2. Products & Services
  • 15.1.3. Recent Developments
  • 15.1.4. Key Personnel
  • 15.1.5. SWOT Analysis
• 15.2. Choose Nanotech Corp
• 15.3. Flight Shield Inc
• 15.4. Lockheed Martin Corporation
• 15.5. Meta Materials Inc
• 15.6. ToughGuard, LLC
• 15.7. Veelo Technologies, LLC
• 15.8. Voyager Space Holdings, Inc
• 15.9. Airbus SE
• 15.10. RTX Corporation

16. Strategic Recommendations

17. About Us & Disclaimer