SBIR Phase I: Micronized Fluorescent Quantum-Dot Microresonators for Advanced Spectrally Barcoded Taggants

SBIR 第一阶段：用于先进光谱条形码标签的微粉化荧光量子点微谐振器

• 批准号: 0441676
• 负责人: Michael LoCascio
• 金额: $ 9.96万
• 依托单位: EVIDENT TECHNOLOGIES INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0441676&HistoricalAwards=false
• 关键词: SBIR; Phase; Micronized; Fluorescent; Quantum

This Small Business Innovation Research (SBIR) Phase I Project will develop the next generation quantum dot-based security features that will have unique visible and infrared fluorescent characteristics. The project combines recent advances in semiconductor nanocrystals (quantum dots) and microresonant structures to produce truly novel and spectrally tunable barcoded taggants for advanced security applications that are nearly impossible to counterfeit, duplicate or reverse-engineer. The proposed taggant will be designed to be compatible with inks, UV curable epoxies, and polymers currently used on currencies and other documents and laminates. In the project, it is proposed to disperse fluorescent quantum dots within a resonant structure (thin film interference structure), micromize the resultant resonator, and disperse the micronized particles within the suitable ink and laminate matrices.Commercially, successful completion of this project would have great impact in the security market. Presently all conventional taggants have been compromised to one degree or other. This technology will provide an added shield against those who wish to do harm to this country and others through the counterfeiting of currencies, passports, and other secure documents and identifications. Knowledge gained on the fabrication of nanocrystal composite thin films with controlled thicknesses and in particular nanocrystals films in resonant cavities would have great impact on fields beyond security. In particular that technology would have potential applications in a number of photonic applications including lasers as well as optical switching and other nonlinear optical components.

这项小企业创新研究（SBIR）第一阶段项目将开发下一代基于量子点的安全功能，该功能将具有独特的可见光和红外荧光特性。该项目结合了半导体纳米晶体（量子点）和微共振结构的最新进展，为先进的安全应用生产真正新颖的、光谱可调的条形码标签，几乎不可能伪造、复制或逆向工程。提议的标记剂将被设计成与油墨、UV固化环氧树脂以及目前用于货币和其他文件和层压板的聚合物兼容。在这个项目中，我们建议将荧光量子点分散在一个共振结构（薄膜干涉结构）中，将所得到的谐振器微型化，并将微型化的粒子分散在合适的墨水和层压矩阵中。在商业上，该项目的成功完成将对证券市场产生重大影响。目前，所有传统的标签剂都在某种程度上受到损害。这项技术将为那些希望通过伪造货币、护照和其他安全文件和身份证件来伤害这个国家和其他国家的人提供额外的保护。在厚度可控的纳米晶复合薄膜，特别是谐振腔纳米晶薄膜的制备方面所获得的知识将对安全以外的领域产生重大影响。特别是，该技术将在许多光子应用中具有潜在的应用，包括激光器以及光开关和其他非线性光学元件。