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A microfluidic thermometer: Precise temperature measurements in microliter- and nanoliter-scale volumes

analysis, decision to publish, or preparation of the manuscript. Author Contributions Conceptualization: Brittney A. McKenzie, William H. Grover. Data curation: Brittney A. McKenzie, William H. Grover ... . Formal analysis: Brittney A. McKenzie, William H. Grover. Funding acquisition: William H. Grover. Investigation: Brittney A. McKenzie, William H. Grover. Methodology: Brittney A. McKenzie, William H

Instantaneous simulation of fluids and particles in complex microfluidic devices

, William H. Grover. Data curation: Junchao Wang, William H. Grover. Formal analysis: Junchao Wang, Victor G. J. Rodgers, Philip Brisk, William H. Grover. Funding acquisition: Philip Brisk, William H ... . Grover. Investigation: Junchao Wang, Philip Brisk, William H. Grover. Methodology: Junchao Wang, Victor G. J. Rodgers, Philip Brisk, William H. Grover. Project administration: William H. Grover

Sorting cells by their density

Sorting cells by their type is an important capability in biological research and medical diagnostics. However, most cell sorting techniques rely on labels or tags, which may have limited availability and specificity. Sorting different cell types by their different physical properties is an attractive alternative to labels because all cells intrinsically have these physical...

Measuring the mass, volume, and density of microgram-sized objects in fluid

Measurements of an object’s fundamental physical properties like mass, volume, and density can offer valuable insights into the composition and state of the object. However, many important biological samples reside in a liquid environment where it is difficult to accurately measure their physical properties. We show that by using a simple piece of glass tubing and some...

Orientation-Based Control of Microfluidics

Most microfluidic chips utilize off-chip hardware (syringe pumps, computer-controlled solenoid valves, pressure regulators, etc.) to control fluid flow on-chip. This expensive, bulky, and power-consuming hardware severely limits the utility of microfluidic instruments in resource-limited or point-of-care contexts, where the cost, size, and power consumption of the instrument must...

MECs: "Building Blocks" for Creating Biological and Chemical Instruments

. Grover 0 1 0 Department of Bioengineering, University of California Riverside , Riverside, CA , United States of America 1 Editor: David T. Eddington, University of Illinois at Chicago , UNITED STATES

Intracellular Water Exchange for Measuring the Dry Mass, Water Mass and Changes in Chemical Composition of Living Cells

We present a method for direct non-optical quantification of dry mass, dry density and water mass of single living cells in suspension. Dry mass and dry density are obtained simultaneously by measuring a cell’s buoyant mass sequentially in an H2O-based fluid and a D2O-based fluid. Rapid exchange of intracellular H2O for D2O renders the cell’s water content neutrally buoyant in...