Abstract: The present invention relates to interferometric detection of particles and optical detection of particles having size dimensions less than or equal to 100 nm. Systems and methods are provided exhibiting enhanced alignment and stability for interferometric detection of particles and/or optical detection of particles having size dimensions less than or equal to 100 nm. Systems and methods are provided that include compensation means for mitigating the impact of internal and external stimuli and changes in operating conditions that can degrade the sensitivity and reliability of particle detection via optical methods, including interferometric-based techniques and/or systems for optical detection of particles having size dimensions less than or equal to 100 nm.

Abstract: The present invention relates to interferometric detection of particles and optical detection of particles having size dimensions less than or equal to 100 nm. Systems and methods are provided exhibiting enhanced alignment and stability for interferometric detection of particles and/or optical detection of particles having size dimensions less than or equal to 100 nm. Systems and methods are provided that include compensation means for mitigating the impact of internal and external stimuli and changes in operating conditions that can degrade the sensitivity and reliability of particle detection via optical methods, including interferometric-based techniques and/or systems for optical detection of particles having size dimensions less than or equal to 100 nm.

Abstract: A chain wrench assembly for tightening or loosening a fastener includes a handle that has a heel which is positionable against a head of a fastener. A chain is coupled to the handle and the chain is extendable around the head of the fastener to form a closed loop around the head of the fastener. The chain has a plurality of gripping elements to engage the head of the fastener thereby facilitating the chain to rotate the head of the fastener when the handle is manipulated for tightening or loosening the fastener.

Abstract: An assembly for storage and retrieval of materials consisting of a right gantry carrying track, a left gantry carrying track in parallel alignment with the right gantry carrying track, a right column, a left column, right column mounting means rollably mounting the right column upon the right gantry carrying track, left column mounting means rollably mounting the left column upon the left gantry carrying track, a lift beam having cantilevered lift arms fixedly attached thereto, lift beam mounting means mounting the lift beam upon the left and right columns so that the lift beam may be upwardly and downwardly moved, storage rack carrying tracks positioned between the gantry carrying tracks in parallel alignment, storage racks, and storage rack mounting means rollably mounting the storage racks upon the storage rack carrying tracks.