Abstract: A microfluidic lab-on-a-chip (LOC) device, microfluidic systems, and associated methodology are described that allow for intelligently collecting environmental DNA (eDNA) and their associated metadata. Optical spectroscopy is integrated with filtration membranes on the microfluidic device. The microfluidic LOC device and systems can be used for selectively capturing targeted species based on optical characteristics and for recording relevant metadata on eDNA acquired by the filtration membranes.

Abstract: Joystick Maze is an educational labyrinth game with the objective of demonstrating mechanical linkage while moving a steel ball across a game board from point A to point B. The game board consists of two parallel connected surfaces with the upper surface incorporating a series of holes and rails, while the lower surface acts as a retrieval platform should the ball fall through any of the holes. The steel ball is moved by gravity resulting from the tilting of the game board. A remote control device (Joystick) effectuates the tilting through rigid linkage. The linkage is connected to rotator bearings, directly attached to the under surface of both the game board and joystick, which are seated in a ringed housing. The construction provides for precise coordinated movement between the control device and the board simultaneously eliminating the necessity of a housing thereby allowing observation of the mechanical linkage.