63 Results for 'Joanna Aizenberg'
Nanoarchitectures for air purification
Illnesses caused by air pollution are the third-leading cause of death in developing nations, and over 5 million people worldwide die every year from air pollution exposure. Catalytic converters, the most widely used air purification devices, convert the toxic gases and pollutants produced by fuel combustion into benign chemicals before the exhaust is released into...
Dynamic Daylight Control System
In the U.S. alone, commercial and residential buildings account for more than 40 percent of the total energy consumption – mostly for lighting. What’s more, the deep building layouts that are typical in the U.S. have led to a complete reliance on artificial lighting systems that are less desirable than natural daylight. Many of the...
Phase-Separating Liquid Gated Membranes
Just like pores in living organisms that control the absorption and excretion of fluids, gases and solids in response to their environments, flow-gating membranes have proved very useful for many mechanical systems, such as gas and liquid separators, dialysis machines, or open heart bypass pumps. But conventional approaches to create synthetic “gated pores” within those...
SLIPS (Slippery Liquid-Infused Porous Surfaces)
The need for an inexpensive, super-repellent surface cuts across a vast swath of societal sectors—from refrigeration and architecture, to medical devices and consumer products. Most state-of-the-art liquid repellent surfaces designed in the last decade are modeled after lotus leaves, which are extremely hydrophobic due to their rough, waxy surface and the physics of their natural...
Apr 21, 2017, 2:00pm - 6:00pm
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Hosted by: Wyss Institute, Harvard John A. Paulson School Engineering and Applied Sciences, and the Kavli Institute for Bionano Science & Technology at Harvard University This minisymposium will explore ongoing research efforts looking into marine biofouling problems as well as research related to microbial biofilm surface interactions. Keynotes will be delivered by: Dr. Dan Rittschof, Duke...
Video/AnimationCatalytic Nanoarchitectures for Clean AirThe Wyss Institute is developing a new type of coating for catalytic converters that, inspired by the nanoscale structure of a butterfly’s wing, can dramatically reduce the cost and improve the performance of air purification technologies, making them more accessible to all. Credit: Wyss Institute at Harvard University
Video/AnimationFouling Marine FoulingMarine fouling occurs when organisms attach themselves to underwater objects like boats, rope, pipes and building structures. Mussels are one of the biggest culprits. Once attached, they are difficult to remove, leading to operational downtime, increased energy use and damage. Paints and coatings are currently used to prevent marine fouling, but are frequently toxin-based and not...
Video/AnimationLiquid Gated MembranesThe first part of this animation compares the transmembrane pressure (TMP) between a standard filter and a liquid gated membrane filter (depicted by pressure gauge in bottom right corner). The second part of the animation shows the tendency of each system to clog up due to fouling. The liquid gated membrane filter results in a...
Video/AnimationEfficient Recovery of Stem Cell SheetsSee in this video how an intact sheet of mesenchymal stem cells, stained with a violet dye, can be lifted off the infused polymer substrate in the culture dish using a filter paper and transferred to a new surface. Credit: Wyss Institute at Harvard University
Video/AnimationFluid GateIn this video, the fluid-based gating mechanism separates gas and water. The fluid-filled pores system leverages pressurization to control the opening and closing of its liquid gates, making it extremely precise at separating mixed materials. Credit: Wyss Institute at Harvard University
Video/AnimationBioinspired Blood Repellent CoatingIn this video, Wyss Institute Founding Director Don Ingber, Core Faculty member Joanna Aizenberg, Staff Scientist Dan Leslie and Postdoctoral Fellow Anna Waterhouse explain how a coating they developed using FDA-approved materials could prevent blood clotting in medical devices without the use of blood thinners. Credit: Wyss Institute at Harvard University