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asteroza : materials   2409

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Single-Cycle Atomic Layer Deposition on Bulk Wood Lumber for Managing Moisture Content, Mold Growth, and Thermal Conductivity | Langmuir
Repurposing atmoic layer deposition techniques to permeate metal oxides THROUGH wood, making it more thermally insulative, fungus resistant, and control water content
lumber  wood  treatment  materials  science  research  technology  metal  oxide  atomic  layer  deposition 
7 days ago by asteroza
Super-high heat flux removal using sintered metal porous media | Request PDF
Potential extremely high heat absorption via porous metal media boiling embedded water
heat  removal  materials  science  research  technology  porous  metal  foam 
7 days ago by asteroza
A path to practical Solar Pumped Lasers via Radiative Energy Transfer | Scientific Reports
solar illuminated luminescent colloidal nanocrystal reradiating/pumping into a NdYAG laser is 4x better than direct pumping a solar laser, but laser efficiency still sucks at 3.2%
solar  pumped  laser  luminescent  colloidal  nanocrystal  concentrator  frequency  converter  downshift  narrowband  emitter  photoluminescence  materials  science  research  technology 
11 days ago by asteroza
Inelastic neutron scattering evidence for anomalous H–H distances in metal hydrides | PNAS
Hydrogen contained in a zirconium vanadium hydride have been found to be closer packed than previously predicted, suggesting possible room temperature superconductivity
supconductor  hydrogen  spacing  metal  zirconium  vanadium  hydride  materials  science  research  technology 
11 days ago by asteroza
Bone-inspired microarchitectures achieve enhanced fatigue life | PNAS
mimicing bone microstructure in artificial materials leads to big gains in cyclic fatigue resistance. Cubic octet structure sorta similar to trabeculae ?
cyclic  fatigue  resistance  materials  science  research  technology  microlattice  microstructure  biomimicry 
14 days ago by asteroza
Superconductors, orbital magnets and correlated states in magic-angle bilayer graphene | Nature
bilayer graphene layered at the magic angle of 1.1 degrees has weird properties. Possibly superconductor, insulator, and other stuff...
graphene  materials  science  research  technology 
14 days ago by asteroza
Void‐Free Layered Polymeric Architectures via Capillary‐Action of Nanoporous Films - Lee - - Advanced Materials Interfaces - Wiley Online Library
Using carbon fiber (graphene?) thin films in composites (both in between the layers and the overwrap) to strengthen the composite, as running a current through the thin film causes a capillary action to squeeze out air voids and heat the resin for curing.
carbon  fiber  wrap  thin  film  composite  void  removal  materials  science  research  technology 
5 weeks ago by asteroza
Carbon-boron clathrates as a new class of sp3-bonded framework materials | Science Advances
long predicted, now synthesized, interesting carbon cages that appear to be stable at ambient temps/pressures. seems a little boron goes a long way...
carbon  calthrate  cage  framework  materials  science  research  technology 
5 weeks ago by asteroza
Grain structure control during metal 3D printing by high-intensity ultrasound | Nature Communications
shaking the semimolten metal with ultrasound during SLS metal printing improves metal grain microstructure
3D  printing  fabbing  metal  grain  microstructure  ultrasound  processing  materials  science  research  technology 
5 weeks ago by asteroza
Measurement of the hydrogen yield in the radiolysis of water by dissolved fission products (Technical Report) | OSTI.GOV
cracking water via dissolved uranium and radiolysis to produce hydrogen and oxygen. This suggests nuclear fuel waste may be usable as a hydrogen source...
hydrogen  gas  production  nuclear  waste  heat  radiolysis  materials  science  research  technology 
6 weeks ago by asteroza
Multifunctional metallic backbones for origami robotics with strain sensing and wireless communication capabilities | Science Robotics
Using paper initially as a scaffold, they apply graphene and platinum, then heat/burn it in two stages to solidify a flexible structure composed of carbon and platinum.
materials  science  research  technology  graphene  metal  backbone  scaffold  felxible  robotics  origami 
12 weeks ago by asteroza
The next graphene? Shiny and magnetic, a new form of pure carbon dazzles with potential | Science | AAAS
90% reflectivity across IR-UV, stronger than stainless steel, and ferromagnetic to 125C. Tentativly called either U-carbon, or admantia...
ferromagnetic  carbon  materials  science  research  technology  branched  hexane  catalyst 
november 2019 by asteroza
A more sustainable material to reinforce concrete structures - EPFL
Using polymer fibers in concrete rather than steel fibers. Same idea as using polymer rebar rather than steel rebar
UHPFRC  polymer  fiber  reinforced  concrete  composite  materials  science  construction  building  research  technology 
november 2019 by asteroza
FOMS reports high-quality ZBLAN production on ISS -
Here's a big marker for space commercialization right here folks. If they can make ZBLAN better than on earth, the commercial case closes.
space  manufacturing  materials  science  research  technology  ISS  ZBLAN  fiber 
november 2019 by asteroza
Chiral Piperidines from Acyclic Amines via Enantioselective, Radical-Mediated δ C–H Cyanation: Chem
New method for synthesizing chiral piperdines, a vital building block of many medicines, and much less wasteful to boot
chiral  piperdine  organic  chemistry  synthesis  materials  science  research  technology  mediine  health  pharmaceuticals  manufacturing 
november 2019 by asteroza
huh, trying to 3D print basalt fiber is ballsy, though the more conventional metal reinforcement via basalt fiber weaves is interesting and practical. What's the russian angle though, are they the actual fiber manufacturers?
3D  printing  fabbing  basalt  fiber  composite  materials  science  research  technology 
november 2019 by asteroza
High-performance subambient radiative cooling enabled by optically selective and thermally insulating polyethylene aerogel | Science Advances
So the focus on this was not heat loss, but heat gain. The idea here is the aerogel is a broadband blocker but narrowband IR transparent (likely at atmospheric wiindow IR frequencies here) and has low direct thermal conductivity. So it's a bit paradoxical in that it's an insulator for conductive heat, but transparent to specific IR (which works well with a narrow band emitter/converter plate), and keeps the energy of the sun off the underlying emitter (though it will naturally leak in solar IR in the narrowband frequency range it is IR transparent to though)
polyethylene  aerogel  passive  cooling  materials  science  research  technology 
november 2019 by asteroza
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