Self-assembled micro-organogels for 3D printing silicone structures | Micro Bubble Generator Pump

What’s especially impressive about your warnings over a year ago, is that you may have even beat Nouriel Roubini to the punch. He was noted for predicting the 2008 financial crisis, but I don’t think even he went public on what he calls the ‘mother of all scams’, until last month. Take a bow.

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Through this commercial and nonprofit enterprise, Schaeffer has shipped more than 7 million catalogs worldwide, educated hundreds of interns and “solarized” 60,000 homes, according to the U.S. Department of Energy, which dubbed the self-described former hippie radical “a green power pioneer.”

(A) Organogel support materials are formulated with light mineral oil, polystyrene-block-polyethylene/propylene diblock copolymers, and polystyrene-block-polyethylene/butylene-block-polystyrene triblock copolymers (polymers drawn are extended to illustrate their contour lengths). (B) High concentrations of diblock copolymers result in a fluid phase of packed micelles, unable to support printed structures. (C) Diblock micelles consist of polystyrene cores (red dots) surrounded by ethylene/propylene coronas. (D) At high concentrations of triblock copolymers, the support bath becomes globally cross-linked, and the printing nozzle causes permanent damage as it moves across the gel. (E) Ethylene/butylene midblocks assemble either into cross-link “bridges,” in which the polystyrene endblocks are found in different cores, or into “loops,” in which both polystyrene endblocks are located in the same core. (F and G) An equal blend of diblock and triblock copolymers results in closely packed microgels. Packed microgels provide a self-healing environment, allowing a printing nozzle to repeatedly transverse the same region while simultaneously supporting printed structures. (H) The micro-organogels form when the diblock copolymers replace the triblock copolymers, reducing the number of ethylene/butylene bridges that form until the material is no longer a continuous network.

I concur that +99.9% of these Alt’s as we call them will go to zero, but I think Bitcoin is here to stay, albeit certainly $2k, maybe less. For instance there is a alt called zen/zcash clone, and they pay people to host, for instance with Bitcoin, now there there is no incentive to mine, there is no host to transact, but with the Zen model, there are 1,000’s of encrypted secure servers that will continue running because they get paid a profit that exceeds the cost of supporting a virtual server in Siberia.

You said: “…use up to 22Kw/hour and for up to 10 hours to 100% recharge a battery. That is a lot of electricity per hour for each night of the week. For a few thousand EV cars per night, not a problem, but if 25% of the petrol cars are replaced by EV, it will be a problem,…”

Power-to-X for hydrogen production creates some interesting opportunities. When hydrogen is produced close to power generation sources, it avoids electricity grid capacity constraints. In addition, hydrogen can be blended in relatively low concentrations (20%) with natural gas and transported in existing infrastructure with only modest operational changes; in some situations, hydrogen can be blended at much high percentages. Power-to-X for synthetic methane allows the use of existing natural gas distribution and storage infrastructure, as the gas can be stored in natural gas pipeline systems or underground for long periods of time, which can address seasonal variability constraints. Finally, power-to-X for the production of gaseous or liquid energy carriers facilitates sector coupling. For example, it can help in sector coupling in cases where electricity is not applicable or convenient, such as in aviation, iron and steel making, or chemical and petrochemical feedstocks.  

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To explore the range of 3D printing capabilities enabled by the micro-organogel system, we print a variety of silicone elastomer structures with varying size, complexity, and materials. In one example, we print a model trachea implant with a wall thickness of 400 μm out of a room temperature vulcanizing (RTV) silicone, Mold Max 10, in which the diameter of the tube fluctuates with height (Fig. 5, A and B). After letting the Mold Max 10 silicone cure at room temperature (25°C) for 24 hours, the model can be removed from the micro-organogel support material and handled. In a second example, we print a 20 mm × 20 mm × 8 mm 3D scaffold structure out of Momentive UV Electro 225 silicone, with sinusoidal wave patterns in both the x-y and x-z directions, with feature sizes on the order of 250 μm (Fig. 5, C and D). This structure was observed to be stable with time, indefinitely, but was made from features too thin to be removed from the medium and handled; improved methods to gently replace the micro-organogel material with low-viscosity solvents or other aqueous materials must be developed to handle these fine, delicate structures. To demonstrate the potential application of our method in challenging biomedical applications such as complex macroscale to mesoscale vasculature, we 3D-print a strong, flexible, perfusable, 3D network of hollow vessels out of Momentive UV Electro 225 silicone, in which a single 25-mm-diameter tube splits into six 3-mm-diameter vessels (Fig. 5, E and F). Once the structure is cured, removed from the micro-organogel support material, and cleaned, we are able to connect pipe fittings and pump fluids through all six openings at high flow rates (Fig. 5G and movie S4).

The morning of the second simulated Thanksgiving began simply enough, with the researchers making themselves breakfast. Vance and three helpers arrived at the house at half past eight. The kitchen was open plan and modest, with peeling laminate surfaces and flimsy cabinets, but its countertops were crammed with instruments for monitoring airborne particles: a condensation-nucleus counter, a differential-mobility analyzer, and so on. Wires threaded all around the room, and stainless-steel hoses led to four trailers outside, which contained equipment too big to fit in the kitchen.

Throughout the year, we made several strategic moves, including the acquisition of a medical radioisotopes business and the announcement of our intentions to commercialize moly 99 radioisotope production. We also took actions on pension and our balance sheet that will create some near-term earnings per share headwinds, however, we have firm conviction that these decisions better position the Company for the future.

We’re guiding to about $225 million in capital expenditures for 2019, including the previously referenced $30 million coming from capital received late in 2018. The remaining $195 million is split with approximately $120 million for Navy, $50 million for isotopes and the remaining balance for other segments and corporate. Given our current outlook, we believe 2019 will be a peak for capital expenditures. In 2020, we see capital expenditures coming down below $150 million and then returning to maintenance capital levels in 2021 at about 3.5% of revenue. As mentioned in our press release, we continue to reiterate our long-term guidance of low double-digit EPS CAGR over the three to five years following the $2.05, we delivered in 2017.