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Hydrofluoric Acid: Hydrofluoric acid. A solution of hydrogen fluoride in water. It is a colorless fuming liquid which can cause painful burns.

Safe Handling of Mineral Acids

JoVE 10370

Source: Robert M. Rioux & Taslima A. Zaman, Pennsylvania State University, University Park, PA


A mineral acid (or inorganic acid) is defined as a water-soluble acid derived from inorganic minerals by chemical reaction as opposed to organic acids (e.g. acetic acid, formic acid). Examples of mineral acids…

 Lab Safety

Soil Nutrient Analysis: Nitrogen, Phosphorus, and Potassium

JoVE 10077

Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University


In this experiment, three soil macronutrients are chemically extracted, combined with color-based reagents, then analyzed using color to determine the nutrient concentration present in the soil sample.


Nitrogen, phosphorus, and…

 Environmental Science

Microfabrication via Photolithography

JoVE 5789

The fabrication of BioMEMs devices is often done using a microfabrication technique called photolithography. This widely used method utilizes light to transfer a pattern onto a silicon wafer, and provides the basis for the fabrication of many types of BioMEMs devices.


This video presents the photolithography technique, shows how the…

 Bioengineering

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

1Department of Electrical and Computer Engineering, University of California, Davis, 2Digital Light Projection (DLP) Technology Development, Texas Instruments, 3Birck Nanotechnology Center and the Department of Electrical and Computer Engineering, Purdue University

JoVE 51251

 Engineering

DNA Origami-Mediated Substrate Nanopatterning of Inorganic Structures for Sensing Applications

1Biohybrid Materials, Department of Bioproducts and Biosystems, Aalto University, 2University of Jyväskylä, Nanoscience Center, Department of Biological and Environmental Science, University of Jyväskylä, 3University of Jyväskylä, Nanoscience Center, Department of Physics, University of Jyväskylä, 4HYBER Center of Excellence, Department of Applied Physics, Aalto University

JoVE 60313

 Chemistry

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides

1Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, 2Institutions of Earth Science, Chinese Academy of Sciences, 3University of Chinese Academy of Sciences, 4First Institute of Oceanography, State Oceanic Administration, 5Key Laboratory of Submarine Geosciences, Second Institute of Oceanography, State Oceanic Administration

JoVE 59098

 Chemistry

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

1Department of Materials Engineering, The University of Tokyo, 2Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 3Department of Materials Science and Engineering, Massachusetts Institute of Technology

Video Coming Soon

JoVE 58897

 JoVE In-Press

Preparation of Mica and Silicon Substrates for DNA Origami Analysis and Experimentation

1Department of Chemistry and Biochemistry, University of Notre Dame, 2Department of Chemical and Biomolecular Engineering, University of Notre Dame, 3Department of Chemistry, Physics, and Engineering Studies, Chicago State University, 4Department of Technology, Ivy Tech Community College, South Bend, Indiana

JoVE 52972

 Chemistry

Polymeric Microneedle Array Fabrication by Photolithography

1Department of Pharmacy, National University of Singapore, 2Singapore University of Technology and Design, 3Institute of Bioengineering and Nanotechnology, Agency for Science, Technology and Research (A*STAR), 4Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 5Mechanobiology Institute, National University of Singapore

JoVE 52914

 Bioengineering

Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases

1Department of Pediatrics, Emory University School of Medicine, 2Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, 3Aflac Cancer Center and Blood Disorders Service of Children's Healthcare of Atlanta, 4Winship Cancer Institute of Emory University

JoVE 3958

 Bioengineering

Fabrication of Ti3C2 MXene Microelectrode Arrays for In Vivo Neural Recording

1Department of Bioengineering, University of Pennsylvania, 2Center for Neuroengineering and Therapeutics, University of Pennsylvania, 3Corporal Michael J. Crescenz Veterans Affairs Medical Center, 4Department of Materials Science and Engineering, Drexel University, 5A.J. Drexel Nanomaterials Institute, Drexel University, 6Department of Neurosurgery, University of Pennsylvania, 7Department of Neurology, University of Pennsylvania, 8Department of Physical Medicine and Rehabilitation

Video Coming Soon

JoVE 60741

 JoVE In-Press
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