The City University of New York

University of California

Xiaohui Ni

Robert R Alfano

Manuel Zevallos

Shanshan He

Mary Louisa Same

Yonggang Zhou

Weihua Zeng

Xianghong Zhou

The present invention teaches how to change the skin color perception, mainly the facial color from red, blue or yellow to white appearance, using quantum and optical principles. By selecting the right size and material of particles compounded in cosmetic preparations and applying the preparations to the skin, the scattering and/or emission from micro- and nanoparticles can provide a complementary color or in proximity to that complementary color of the skin color. The mixture of the color provided by the particles and the reflected color from the skin will whiten the skin or make inconspicuous of the hyperchromic portion of the skin. The invention can also be used for other applications in which the particles can be applied to a surface or blended into a material, such as, for example, automobile paint, house paint, glass color and nail polish.

Changing skin-color perception using quantum and optical principles in cosmetic preparations

An optical technique to improve the imaging of a target inside suspensions of scattering particles includes the illumination of the scattering particles with circularly polarized light. The backscattered light from the host medium preserves the helicity of incident light, while the backscattered light reflected from the target is predominated with light of opposite helicity. Based on the observed helicity difference in the emerging light that originated at the target and that backscattered from the medium, the present optical technique improves the image contrast using circular polarization. This approach makes use of polarization memory which leads to the reflected light from the target accompanied by weak diffusive backscattered light. Using the present technique, improved imaging of the artery wall is achieved and plaque composition can be assessed through a blood field associated with the artery. The scattering from the particles, such as red blood cells, in the blood is reduced due to polarization memory. The present invention can be also applied to other biomedical application, as well as image targets through adverse environmental conditions, such as fog, clouds, smoke, murky water, etc.

Imaging systems and methods to improve backscattering imaging using circular polarization memory

Growing community of inventors

New York, NY, United States of America

Xiaohui Ni