asteroza + surface   297

Generating Light from Darkness: Joule
Using narrowband emitters to emit heat through the atmospheric IR window, you can make a plate cold on the sky facing side, creating a heat difference a thermoelectric generator can utilize
narrowband  IR  emitter  surface  treatment  atmospheric  window  heat  differential  night  sky  thermoelectric  generator 
september 2019 by asteroza
Home
Allegedly they have recreated the formula for the legendary Starlite insulator ...
Starlite  insulator  insulation  surface  coating  materials  science  research  technology 
august 2019 by asteroza
Observation of surface wave patterns modified by sub-surface shear currents | Journal of Fluid Mechanics | Cambridge Core
Kelvinangle may not always be 37 degrees in the presence of shear layers. This has applications in boat wake theory, with implications for fuel efficiency as well as maritime ocean surveillance in littoral waters
hydrodynamics  boat  wake  kelvin  angle  fluid  dynamics  research  surface  wave  pattern 
august 2019 by asteroza
Principles of Dynamic Heterogeneous Catalysis: Surface Resonance and Turnover Frequency Response | ACS Catalysis
If the catalyst oscillates near the chemical reaction resonance frequency, you can break the Sabatier maximum catalyst reaction rate
catalyst  chemical  reaction  rate  mateirals  science  physics  chemistry  research  technology  vibration  oscillation  surface  resonance 
august 2019 by asteroza
OSA | Study of W/HfO2 grating selective thermal emitters for thermophotovoltaic applications
Interesting, tungsten with a hafnium oxide grating over it has highly selective IR emittance, making it well matched for gallium based TPV cells
tungsten  emitter  hafnium  oxide  transverse  magnetic  polarization  surface  plasmon  shaping  IR  TPV  cell  matching  power  generator  materials  science  research  technology 
august 2019 by asteroza
Nature Architects Inc. – Nature Architects inc. makes elasticity and deformation to be computable.
Trying to work on advanced bulk materials designs, using interesting internal structures to provide materials they call CAM's which can do neat things, like weird springs and making curved truss structures from flatpack materials .
mechanical  computational  metamaterial  origami  furniture  japan  3D  printing  fabbing  CAD  materials  science  simulation  compliant  structure  curved  surface 
july 2019 by asteroza
Photovoltaics
Interesting light trapping topology that can be added to PV to allow high off-angle performance. Allegedly 95% at 60 degrees off.
PV  solar  panel  topography  lithography  light  trapping  structure  off  angle  incidence  capture  surface  texture  treatment  space 
june 2019 by asteroza
Plasmonic p–n Junction for Infrared Light to Chemical Energy Conversion - Journal of the American Chemical Society (ACS Publications)
Making hydrogen gas with IR light. Though one wonders where direct conversion with this photocatalyst is better than using a frequency converter intermediary and a different photocatlyst...
japa  hydrogen  production  materials  science  research  technology  IR  cadmium  copper  sulfide  photocatalyst  heterostructure  nanocrystal  surface  plasmon  solar  fuel 
march 2019 by asteroza
OSA | Laser coloration of metals in visual art and design
Some sort of way of using a single laser to multicolor metal coloring using not just classic laser oxidation or periodic grating, but also some sort of subwavelength nanoparticle surface treatment
laser  oxidation  periodic  grating  subwavelength  nanoparticle  surface  treament  metal  coloring  color  materials  science  research  technology 
february 2019 by asteroza
Hypersurfaces
Using a vibration sensor SoC with custom neural nets loaded for the specific surface it is paired to, you can turn a object/surface into a touchscreen of sorts. Notable is the NN is pretrained and loaded onto the SoC, so touch detection is done offline.
deep  machine  learning  vibration  detection  model  touch  interface  HCI  UI  hypersurface  surface  sensor  HID  hardware  electronics  devices 
november 2018 by asteroza
Broadband Light Management with Thermochromic Hydrogel Microparticles for Smart Windows: Joule
Using 500nm thermochromic nanoparticles to turn glass frosty at 85F, and reject outside IR heat. So if it gets warm, a window can turn transluscent to stop solar heating.
thermochromic  IR  filter  window  surface  coating  materials  science  research  technology  hydrogel  thin  film 
november 2018 by asteroza
Nelumbo
Some sort of surface treatment for heat exchangers that have condensation, that throws off the droplets
hydrophobic  surface  treatment  condensing  heat  exchanger  materials  science  research  technology 
october 2018 by asteroza
A comparison of the antifouling performance of air plasma spray (APS) ceramic and high velocity oxygen fuel (HVOF) coatings for use in marine hydraulic applications: Biofouling: Vol 34, No 5
Still kinda expensive to do a whole ship hull, but this basically uses a supersonic flamethrower to treat a metal surface with a carbide layer for biofouling protection, cuts fouling by 50% or more.
marine  materials  science  research  technology  carbide  surface  treatment  antifouling  coating  high  velocity  oxygen  fuel  plasma  spray 
october 2018 by asteroza
Hierarchically porous polymer coatings for highly efficient passive daytime radiative cooling | Science
New cheapish polymer coating to make a narrowband IR emitter that pumps through the LWIR atmospheric transmission window. So something can be cooled by exposing it to the sky.
passive  daytime  radiative  cooling  narrowband  emitter  IR  materials  science  research  technology  polymer  surface  coating  air  void  phase  inversion 
october 2018 by asteroza
Therapeutic luminal coating of the intestine | Nature Materials
Similar to gastric bypass surgery remove a segment of GI tract, or similar tubular net like structures inserted after the stomach, they effectively block nutrient absorption. So, the idea here is, make a pill that can temporarily coat the GI tract to block nutrient uptake. No need for heavy surgery and no risk of a mesh tube getting dislodged, but you need to take the pill regularly.
diabetes  treatment  gastrointestinal  tract  surface  coating  block  health  medicine  research 
june 2018 by asteroza
Open Research: Bubbles, Thin Films and Ion Specificity
Somebody did a whole Ph.D in saltwater bubbles. Because it's a much deeper topic than people give it credit for.
saltwater  bubble  hydrodynamic  flow  surface  tension  force  interface  interfacial  rheology  coalescence  thin  film 
june 2018 by asteroza
OSA | Achieving cryogenic temperatures in deep space using a coating
FISO briefing has more, but a pressed powder of BaF2 used for tank coating and thermal standoffs for a LOx tank in space might allow storage of LOx without a crycooler (with the risk of LOx freezing out in deeper space!) due to reradiation
BaF2  heat  rejection  optical  surface  coating  thermal  management  cyrogenic  materials  science  research  technology  tank  space 
january 2018 by asteroza
Use a demo to see how ASR can help protect your devices | Microsoft Docs
The custom demo tool lets you create sample malware infection scenarios so you can see how ASR would block and prevent attacks
windows  sercurity  attack  surface  reduction  test  testing  prevention  defense  audit  antiexploit 
december 2017 by asteroza
Analysis of a Lunar Sling Launcher
Geoffrey Landis PDF on a lunar surface sling launch system, feasibility, and performance. looks doable and can go places. If you can fire the sling towards a lunar frozen orbit (86 degrees) or similar, you could do fairly regular launches. Being a tether based sling makes it easier to pack up/deploy compared to a fixed mass driver complex. Wonder how well you could catch with one too...
moon  lunar  surface  sling  launch  launcher  space  research  tether 
december 2017 by asteroza
SEALER
Pure lead cooled (not eutectic) uranium oxide reactor design, using new aluminum coating for the coolant systems
Sweden  uranium  oxide  lead  cooled  nuclear  reactor  power  generator  materials  science  research  technology  aluminum  surface  coating  metal  corrosion  resistance 
november 2017 by asteroza
Velcro®-Inspired SiC Fuzzy Fibers for Aerospace Applications - ACS Applied Mater...
Coating silicon carbide fibers with fuzzy silicon carbide nanotubes/nanowire like a velco surface of fuzzy fibers improves composite ceramic performance in high heat applications.
silicon  carbide  nanotube  nanofiber  reinforced  composite  ceramic  materials  science  research  technology  velcro  surface  treatment  fiber  fuzzy  Delicious 
march 2017 by asteroza
Microsoft Store
Surface leasing direct from Microsoft
microsoft  surface  managed  lease  PC  Delicious 
december 2016 by asteroza
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