 Scanning module |
| It is an object of the present invention to provide a simple, miniature scanning module allowing ... |
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| Illumination device and method for laser projector |
| One or more of the problems outlined above may be solved by the various embodiments of the ... |
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| Air filter material |
| What is claimed is: 1. An air filter material comprising: (1) an upper fibrous layer to be disposed ... |
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| Wavelength allocation in a ring |
| It is an object of the present invention to provide a method of wavelength allocation that allows ... |
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| Ruggedized high-volume enviromentally-friendly electrophoretic cell |
| The invention, as claimed, is intended to provide a remedy. It solves the problem of how to ... |
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| Tape data carrier, method and device for manufacturing the same |
| The given problem is solved by the fact that the information carrier is a film structure which ... |
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| Method and apparatus for capacity-efficient restoration in an optical communication system |
| The present invention overcomes the previously mentioned disadvantages by using a hybrid protection ... |
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| Single wall domain latrix for optical data processing system |
| The optical page composer of the present invention is comprised of a magnetizable layer in which ... |
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| Microstructure-bearing articles of high refractive index |
| ; PREFERRED EMBODIMENTS The optical resinous articles of the present invention are characterized by ... |
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Two-photon upconverting dyes and applications
| Details |
Inventors: Prasad, Paras N.; Bhawalkar, Jayant D.; He, Guang S.; Zhao, Chan F.; Gvishi, Raz; Ruland, Gary E.; Zieba, Jaroslaw; Cheng, Ping Chin; Pan, Shan Jen;
Assignee: The Research Foundation of State university of New York (Amherst, NY)
Primary Examiner: Davis; Zinna Northington
Assistant Examiner:
Attorney, Agent or Firm: Nixon, Hargrave, Devans & Doyle LLP
Styryl dyes and compositions which exhibit superior two-photon absorption cross-sections and are useful in two-photon pumped cavity lasing, two-photon pumped upconversion lasing, optical power limiting, optical power stabilization, optical signal reshaping, and infrared beam detection and indication are disclosed. Also disclosed are multiphasic nanostructured composites which include a glass having pores, an optically active coating material on the pore surface, and a polymeric material in the pores. These composites are useful in producing multifunctional optical materials, such as broadly tunable lasers. Methods for killing cells and viruses using a photosensitizer and a two-photon upconverting dye are also described. These methods are especially useful to kill cells and viruses in biological materials, such as in photodynamic therapy of tumors and cancers or blood purification protocols. Media and methods for recording data in a three-dimensional matrix which includes a plurality of dye molecules is also described. The data storage methods and media have approximately 10.sup.12 volume elements per square centimeter, and each of the volume elements can store a single bit, digital information, or analog information. The data storage methods and media of the present invention are particularly useful for storing or archiving a series of two-dimensional black and white or color images, such as frames of a movie. |
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DETAILED DESCRIPTION The present invention relates to a composition which includes a matrix material and a styryl compound dispersed therein.
The styryl compound has the formula: ##STR1## wherein D is an electron donating group; Q is an electron acceptor selected from the group consisting of electron acceptors having the formulae: ##STR2## W is an electron accepting group, R.
sup.
3 is selected from the group consisting of substituted or unsubstituted alkyl or substituted or unsubstituted aryl moieties, n is an integer from 0 to 4, A, B, and C are substituents of their rings and are each independently selected from the group consisting of alkyl, alkoxy, hydroxyalkyl, sulfoalkyl, carboxyalkyl, and hydrogen, and Y is a counterion.
The present invention also provides a method of detecting infrared radiation.
The method comprises placing a styryl compound having the above formula at a location potentially exposed to the infrared radiation and evaluating whether the styryl compound has been exposed to the infrared radiation at the location.
Another aspect of the present invention pertains to a method for reducing intensity of infrared radiation.
The method comprises providing a styryl compound having the above formula and passing infrared radiation through the compound.
The present invention also relates to a method for converting infrared radiation to visible radiation.
The method includes providing a styryl compound having the above formula and exposing the compound to infrared radiation.
The present invention further relates to a styryl compound having the formula: ##STR3## wherein R.
sup.
1, R.
sup.
2, and R.
sup.
3 are the same or different and are selected from the group consisting of substituted or unsubstituted alkyl or substituted or unsubstituted aryl moieties, A and B are substituents of their rings and are each independently selected from the group consisting of alkyl, alkoxy, hydroxyalkyl, sulfoalkyl, carboxyalkyl, and hydrogen, and Y is a counterion.
The styryl compounds and compositions of the present invention have much greater two-photon absorption cross-sections, much stronger upconversion fluorescence emission, and increased stability compared to the organic dyes of the prior art
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Optical Systems 
