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    The DOE Science News Source is a Newswise initiative to promote research news from the Office of Science of the DOE to the public and news media.
    • 2018-03-28 12:05:01
    • Article ID: 691872

    Berkeley Lab Scientists Print All-Liquid 3-D Structures

    Reconfigurable material could be used for liquid electronics and chemical synthesis, among other applications

    • Credit: Berkeley Lab

      Berkeley Lab scientists have developed a way to print 3-D structures composed entirely of liquids. Using a modified 3-D printer, they injected threads of water into silicone oil — sculpting tubes made of one liquid within another liquid.

    Scientists from the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a way to print 3-D structures composed entirely of liquids. Using a modified 3-D printer, they injected threads of water into silicone oil — sculpting tubes made of one liquid within another liquid.

    They envision their all-liquid material could be used to construct liquid electronics that power flexible, stretchable devices. The scientists also foresee chemically tuning the tubes and flowing molecules through them, leading to new ways to separate molecules or precisely deliver nanoscale building blocks to under-construction compounds.

    The researchers have printed threads of water between 10 microns and 1 millimeter in diameter, and in a variety of spiraling and branching shapes up to several meters in length. What’s more, the material can conform to its surroundings and repeatedly change shape.

    “It’s a new class of material that can reconfigure itself, and it has the potential to be customized into liquid reaction vessels for many uses, from chemical synthesis to ion transport to catalysis,” said Tom Russell, a visiting faculty scientist in Berkeley Lab’s Materials Sciences Division. He developed the material with Joe Forth, a postdoctoral researcher in the Materials Sciences Division, as well as other scientists from Berkeley Lab and several other institutions. They report their research March 24 in the journal Advanced Materials.

    The material owes its origins to two advances: learning how to create liquid tubes inside another liquid, and then automating the process.

    For the first step, the scientists developed a way to sheathe tubes of water in a special nanoparticle-derived surfactant that locks the water in place. The surfactant, essentially soap, prevents the tubes from breaking up into droplets. Their surfactant is so good at its job, the scientists call it a nanoparticle supersoap.

    The supersoap was achieved by dispersing gold nanoparticles into water and polymer ligands into oil. The gold nanoparticles and polymer ligands want to attach to each other, but they also want to remain in their respective water and oil mediums. The ligands were developed with help from Brett Helms at the Molecular Foundry, a DOE Office of Science User Facility located at Berkeley Lab.

    In practice, soon after the water is injected into the oil, dozens of ligands in the oil attach to individual nanoparticles in the water, forming a nanoparticle supersoap. These supersoaps jam together and vitrify, like glass, which stabilizes the interface between oil and water and locks the liquid structures in position.

    This stability means we can stretch water into a tube, and it remains a tube. Or we can shape water into an ellipsoid, and it remains an ellipsoid,” said Russell. “We’ve used these nanoparticle supersoaps to print tubes of water that last for several months.”

    Next came automation. Forth modified an off-the-shelf 3-D printer by removing the components designed to print plastic and replacing them with a syringe pump and needle that extrudes liquid. He then programmed the printer to insert the needle into the oil substrate and inject water in a predetermined pattern. 

    “We can squeeze liquid from a needle, and place threads of water anywhere we want in three dimensions,” said Forth. “We can also ping the material with an external force, which momentarily breaks the supersoap’s stability and changes the shape of the water threads. The structures are endlessly reconfigurable.”

    The research was funded by the Department of Energy’s Office of Science.

    ###

    Lawrence Berkeley National Laboratory addresses the world’s most urgent scientific challenges by advancing sustainable energy, protecting human health, creating new materials, and revealing the origin and fate of the universe. Founded in 1931, Berkeley Lab’s scientific expertise has been recognized with 13 Nobel Prizes. The University of California manages Berkeley Lab for the U.S. Department of Energy’s Office of Science. For more, visit www.lbl.gov.

    DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov.

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    Sierra Snowpack Could Drop Significantly By End of Century

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    Costas Soukoulis elected to National Academy of Inventors

    Costas Soukoulis, Ames Laboratory senior scientist and Iowa State University Frances M. Craig Endowed Chair and Distinguished Professor, has been named as a 2018 National Academy of Inventors (NAI) Fellow.

    Biophysicist F. William Studier Elected Fellow of the National Academy of Inventors

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    Blast to the future

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    Department of Energy to Provide $24 Million for Computer-Based Materials Design

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    Argonne scientists recognized for decades of pioneering leadership in research

    Argonne scientists Ali Erdemir and Jack Vaughey were named 2018 Fellows of the American Association for the Advancement of Science (AAAS).

    Kurfess, Smith join ORNL to lead advanced manufacturing initiatives

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    Four Berkeley Lab Scientists Named AAAS Fellows

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    U.S. Department of Energy to Host Nationwide CyberForce Competition(tm) December 1

    Students from dozens of colleges/universities will participate in the U.S. Department of Energy's CyberForce Competition(tm) this weekend

    Seven ORNL researchers named 2019 INCITE award winners

    Seven researchers from the Department of Energy's Oak Ridge National Laboratory have been chosen by the Innovative and Novel Computational Impact on Theory and Experiment, also known as INCITE, program to lead scientific investigations that require the nation's most powerful computers. The ORNL-based projects span a broad range of the scientific spectrum and represent the potential of high-performance computing in ensuring America's scientific competitiveness and energy security.

    DOE Laboratories Win Gordon Bell Prize

    Two U.S. Department of Energy (DOE) National Laboratories were recently awarded the 2018 Association for Computing Machinery's (ACM's) Gordon Bell Prize.


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    The Biermann Battery Effect: Spontaneous Generation of Magnetic Fields and Their Severing

    The mechanism responsible for creating intense magnetic fields in laser-driven plasmas also helps tear the fields apart.

    Subtlety and the Selective Art of Separating Lanthanides

    Unexpected molecular interactions involving water clusters have a subtle, yet profound, effect on extractants picking their targets.

    Review Examines the Science and Needs of Nitrogen-Based Transformations

    Advances in biochemistry and catalysis could lead to faster, greener nitrogen-rich fertilizer.

    Quickly Capture Tiny Particles Reacting

    New method takes a snapshot every millisecond of groups of light-scattering particles, showing what happens during industrially relevant reactions.

    New Technology Consistently Identifies Proteins from a Dozen Cells

    A new platform melding microfluidics and robotics allows more in-depth bioanalysis with fewer cells than ever before.

    Optimal Foraging: How Soil Microbes Adapt to Nutrient Constraints

    How microbial communities adjust to nutrient-poor soils at the genomic and proteomic level gives scientists insights into land use.

    Microbes Eat the Same in Labs and the Desert

    Analyses of natural communities forming soil crusts agree with laboratory studies of isolated microbe-metabolite relationships.

    Diverse Biofeedstocks Have High Ethanol Yields and Offer Biorefineries Flexibility

    Evidence suggests that biorefineries can accept various feedstocks without negatively impacting the amount of ethanol produced per acre.

    Opening Access to Explore the Synthetic Chemistry of Neptunium

    New, easily prepared starting material opens access to learning more about a difficult-to-control element in nuclear waste.

    Tiny Titanium Barrier Halts Big Problem in Fuel-Producing Solar Cells

    New design coats molecular components and dramatically improves stability under tough, oxidizing conditions.


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