University of California

Lawrence Livermore National Security, LLC

Kenton J Moody

Muriel Y Ishikawa

Lowell L Wood

Tzu-Fang Wang

Tashi Parsons-Davis

Ronald W Lougheed

Narek Gharibyan

Anna G Servis

The present disclosure relates to a membrane extraction apparatus for extracting a component from a first liquid. The apparatus may incorporate a housing comprised of first and second mating housing halves, with each housing half having an open faced channel formed therein such that the channels at least partially overlay one another when the two housing halves are secured together. A membrane filter is disposed between the two housing halves to overlay the open faced channels. The membrane filter extracts the component from the first liquid and transfers the component into the second liquid as the first and second liquids flow through the first and second housing halves.

Modular, disposable 3D printed microfluidic membrane system for separation and purification

A covert, gamma-ray &ldquo;signature&rdquo; is used as a &ldquo;watermark&rdquo; for property identification. This new watermarking technology is based on a unique steganographic or &ldquo;hidden writing&rdquo; digital signature, implemented in tiny quantities of gamma-ray-emitting radioisotopic material combinations, generally covertly emplaced on or within an object. This digital signature may be readily recovered at distant future times, by placing a sensitive, high energy-resolution gamma-ray detecting instrument reasonably precisely over the location of the watermark, which location may be known only to the object's owner; however, the signature is concealed from all ordinary detection means because its exceedingly low level of activity is obscured by the natural radiation background (including the gamma radiation naturally emanating from the object itself, from cosmic radiation and material surroundings, from human bodies, etc.). The &ldquo;watermark&rdquo; is used in object-tagging for establishing object identity, history or ownership. It thus may serve as an aid to law enforcement officials in identifying stolen property and prosecuting theft thereof. Highly effective, potentially very low cost identification-on demand of items of most all types is thus made possible.

Gamma watermarking

Growing community of inventors

Livermore, CA, United States of America

Kenton J Moody