Controlling transfer of objects affecting optical characteristics

US8320983B2 · kind B2 · utility

Assignee

• Palo Alto Research Center Incorporated · US

Inventors

• Joerg Martini · San Francisco, US
• Jeffrey N. Roe · San Ramon, US
• Peter Kiesel · Palo Alto, US
• Michael Bassler · Erlangen, DE
• Alan G. Bell · Palo Alto, US
• Richard H. Bruce · Los Altos, US
• Noble M. Johnson · Menlo Park, US

Key dates

• Filing date: Dec 17, 2007
• Grant date: Nov 27, 2012
• Expiry date: Aug 26, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/39
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An implantable product such as an article, device, or system can include analyte and non-analyte containers in parts that can be operated as optical cavities. The product can also include fluidic components such as filter assemblies that control transfer of objects that affect or shift spectrum features or characteristics such as by shifting transmission mode peaks or reflection mode valleys, shifting phase, reducing maxima or contrast, or increasing intermediate intensity width such as full width half maximum (FWHM). Analyte, e.g. glucose molecules, can be predominantly included in a set of objects that transfer more rapidly into the analyte container than other objects, and can have a negligible or zero rate of transfer into the non-analyte container; objects that transfer more rapidly into the non-analyte container can include objects smaller than the analyte or molecules of a set of selected types, including, e.g., sodium chloride. Output light from the containers accordingly includes information about analyte.