METHOD OF IMAGING THE ELECTRICAL CONDUCTIVITY DISTRIBUTION OF A SUBSURFACE
A method of imaging electrical conductivity distribution of a subsurface containing metallic structures with known locations and dimensions is disclosed. Current is injected into the subsurface to measure electrical potentials using multiple sets of electrodes, thus generating electrical resistivity tomography measurements. A numeric code is applied to simulate the measured potentials in the presence of the metallic structures. An inversion code is applied that utilizes the electrical resistivity tomography measurements and the simulated measured potentials to image the subsurface electrical conductivity distribution and remove effects of the subsurface metallic structures with known locations and dimensions.
Ultralow-Volume, Shallow, Microwell-Based Spatial Proteomics for Scalable Proteome Mapping of Tissues
Pete McGrail
Philip P. Schonewill
3D Printed Face Covering and Reusable Respirator Designs
Shuttha Shutthanandan
Shuttha Shutthanandan is a materials scientist at Pacific Northwest National Laboratory.
Lai-yung Ruby Leung
Dr. L. Ruby Leung is a Battelle Fellow at Pacific Northwest National Laboratory. Her research broadly cuts across multiple areas in modeling and analysis of climate and the hydrological cycle.
Aquatic Organism Tracking Devices, Systems and Associated Methods
Compared with MHK energy, widely-used hydropower have also been facing similar environmental concerns. To help investigate the potential of fish injury and mortality from passage through hydropower turbines, PNNL developed the JSATS. Recent JSATS development included several state-of-the-art acoustic transmitters, such as the injectable transmitter and the juvenile eel/lamprey transmitter. The latter is the world's smallest acoustic tag. Both these small transmitters have been successfully demonstrated in field studies and helped gather information on species of early life stages that had previously been unobtainable. The highly efficient transducer and circuit designs as well as the high-density micro-battery technology specifically developed for these transmitters were the innovations that made these technological advancements possible. The JSATS operates at 416.7 kHz, a relatively high acoustic frequency that works well filtering out acoustic noises in freshwater environments. With hardware and software modifications, these technologies can be readily adopted for a lower-frequency transmitter for use in marine environments. Our feasibility assessment and laboratory benchtop testing of the transmitter concept at three different frequencies around 200 kHz have shown significant improvements (detailed results listed in the attached document).
RECHARGEABLE LITHIUM-ION MICRO-BATTERY AND METHODS OF MAKING AND USING THE SAME (iEdison 0685901-21-0003)
This invention relates to a rechargeable lithium-ion micro battery and associated method of manufacture. The rechargeable micro battery is a cylindrical shape and has a wound jellyroll comprised of an anode electrode sheet, a separator sheet and a cathode electrode sheet. The anode electrode sheet is a mixture of active material (graphite, Si), conductive carbon and binder coated on a copper current collector. A piece of Li metal film is also attached on the copper current collector close to but not contact with graphite mixture. The Li metal film acts as lithium source in the battery and will travel to graphite automatically after injecting the electrolyte into the battery. The loading of Li metal is designed to get the whole anode fully lithiated. The cathode electrode sheet is a mixture of active material (lithium free cathode, like S, MnO2 or delithiated LiCoO2, LiNiMnCoO2, Li2Mn2O4), conductive carbon and binder coated on aluminum current collector. The Li metal attached anode electrode sheet, separator sheet, and lithium free cathode electrode sheet are then wound to a cylindrical shape jellyroll. The jellyroll is sealed in a cylindrical can (Al, stainless steel or Ti) with electrolyte filled in it. With the design anode and cathode, the height of the rechargeable micro battery can be downsized to 1.6 mm with a diameter of 1.8 mm while 4 mm of height is a limit for current winding technology in lithium-ion battery.