Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Exploring New Ways to Control Thermal Radiation

Abstract:
When scientists are trying to make things better, they will often turn to a standard rule and try to disprove or disrupt it.

A consortium of researchers using the unique Molecular Foundry at Lawrence Berkeley National Laboratory (Berkeley Lab) set out to do just that with Planck’s Law.

Exploring New Ways to Control Thermal Radiation

Berkeley, CA | Posted on April 29th, 2019

Planck’s Law, which forms the basis of quantum theory, states that electromagnetic radiation from heated bodies is distributed over a wide range of wavelengths and wide range of angles.

However, Max Planck himself noted that the emitting energy distribution would deviate significantly from his law if the characteristic size of the emitting object is smaller than the thermal wavelength (about 10 micrometers at room temperature). With the advent of micro- and nanotechnology, it is easy to fabricate materials where Planck’s Law will not hold.

The researchers set out to determine the deviation from Planck’s Law in order to understand this impact on technologies based on nano- and micro-structured geometries. Imagine a thermal storage material that converts electricity to heat and then radiates it to a photovoltaic cell to get the electricity back when desired. The radiative emitter from the thermal storage could be made from nanostructures to maximize the performance.

Another example is in the area of high temperature nano-geometry-based thermoelectrics, where high temperature waste heat is converted to electricity. It is important to understand the radiation from these nanoscale features, as radiation is the dominant source of heat leakage at high temperatures and will lead to reduction in heat-to-electricity conversion efficiency.

Supporting Industry

Research like this is what U.S. national laboratories focus on. Researchers ask the questions and do the experiments that industry may not be able to support early on.

Scientific user facilities such as the Molecular Foundry also aid in this type of research. The Molecular Foundry is a Department of Energy (DOE)-funded nanoscience research entity that provides users from around the world with access to cutting-edge expertise, instrumentation and modeling tools in a collaborative, multidisciplinary environment.

In this case, researchers used the radiation models available in the Molecular Foundry to model the thermal radiation from rectangular nanoribbons of silica glass, a polar dielectric material. The modeling was performed using supercomputers in the National Energy Research Scientific Computing Center (NERSC), another DOE user facility located at Berkeley Lab. The experiments were conducted by researchers at University of California, San Diego.

“Nobody has explored the relative behavior of nano-geometries, particularly anisotropic nano-geometries—nanostructures that are rectangular in cross-section—in this way,” said Ravi Prasher, one of the researchers.

Practical applications for this early-stage energy conversion are important for many renewable energy applications, such as concentrated solar electricity production, water desalination, thermochemical reactions, water heating, and thermal storage.

Authors were Sunmi Shin (A doctoral student in the Materials Science and Engineering Program, University of California, San Diego); Mahmoud Zouka, a postdoctoral research in the Energy Storage & Distributed Resources Division at Berkeley Lab; Prasher, Associate Lab Director of the Energy Technologies Area at Berkeley Lab; and Renkun Chen, a Mechanical Engineering Professor from UCSD.

####

About Berkeley Lab
Founded in 1931 on the belief that the biggest scientific challenges are best addressed by teams, Lawrence Berkeley National Laboratory and its scientists have been recognized with 13 Nobel Prizes. Today, Berkeley Lab researchers develop sustainable energy and environmental solutions, create useful new materials, advance the frontiers of computing, and probe the mysteries of life, matter, and the universe. Scientists from around the world rely on the Lab’s facilities for their own discovery science. Berkeley Lab is a multiprogram national laboratory, managed by the University of California for the U.S. Department of Energy’s Office of Science.

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.

For more information, please click here

Contacts:
Julie Chao

510-486-6491

Copyright © Berkeley Lab

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

The publication, Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons, was published in Nature Communications in March 2019:

Related News Press

News and information

Self-driving microrobots December 10th, 2019

CEA-Leti Thin-Film Batteries Target Extended Applications and Improved Performance in Medical Implants: IEDM 2019 Paper Reports Millimeter-Scale TFBs Exhibit the Best Performance In Both Energy and Power Densities December 10th, 2019

Arrowhead Pharmaceuticals Closes Underwritten Public Offering with Gross Proceeds of $266.8 Million December 7th, 2019

'Buildings' in human bone may hold key to stronger 3D-printed lightweight structures December 6th, 2019

Laboratories

Argonne collaborates to review current battery recycling processes for electric vehicles November 8th, 2019

Go with the flow: Scientists design new grid batteries for renewable energy: New blueprint for affordable, sustainable 'flow batteries' developed at Berkeley Lab could accelerate an electrical grid powered by the sun and wind November 8th, 2019

Shedding new light on the charging of lithium-ion batteries November 1st, 2019

New drug-delivery technology promises efficient, targeted cancer treatment October 22nd, 2019

Govt.-Legislation/Regulation/Funding/Policy

Self-driving microrobots December 10th, 2019

'Buildings' in human bone may hold key to stronger 3D-printed lightweight structures December 6th, 2019

Artificial cells act more like the real thing December 6th, 2019

Scientists see defects in potential new semiconductor: Discovery could help in effort to make high-powered electronics more efficient December 5th, 2019

Possible Futures

Self-driving microrobots December 10th, 2019

CEA-Leti Thin-Film Batteries Target Extended Applications and Improved Performance in Medical Implants: IEDM 2019 Paper Reports Millimeter-Scale TFBs Exhibit the Best Performance In Both Energy and Power Densities December 10th, 2019

'Buildings' in human bone may hold key to stronger 3D-printed lightweight structures December 6th, 2019

Artificial cells act more like the real thing December 6th, 2019

Discoveries

Artificial cells act more like the real thing December 6th, 2019

Scientists see defects in potential new semiconductor: Discovery could help in effort to make high-powered electronics more efficient December 5th, 2019

Electro-optical device provides solution to faster computing memories and processors: First-of-a-kind electro-optical device provides solution to faster and more energy efficient computing memories and processors December 2nd, 2019

Growing nano-tailored surfaces using micellar brushes November 29th, 2019

Announcements

Self-driving microrobots December 10th, 2019

CEA-Leti Thin-Film Batteries Target Extended Applications and Improved Performance in Medical Implants: IEDM 2019 Paper Reports Millimeter-Scale TFBs Exhibit the Best Performance In Both Energy and Power Densities December 10th, 2019

Arrowhead Pharmaceuticals Closes Underwritten Public Offering with Gross Proceeds of $266.8 Million December 7th, 2019

'Buildings' in human bone may hold key to stronger 3D-printed lightweight structures December 6th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Self-driving microrobots December 10th, 2019

'Buildings' in human bone may hold key to stronger 3D-printed lightweight structures December 6th, 2019

Artificial cells act more like the real thing December 6th, 2019

Scientists see defects in potential new semiconductor: Discovery could help in effort to make high-powered electronics more efficient December 5th, 2019

Energy

Graphene takes off in composites for planes and cars: The Graphene Flagship identified the strategic advantages of integrating graphene into fibre composites, used to build planes and cars December 5th, 2019

The Greenest Diet: Bacteria Switch to Eating Carbon Dioxide: Such bacteria may, in the future, contribute to new, carbon-efficient technologies November 27th, 2019

'Messy' production of perovskite material increases solar cell efficiency November 15th, 2019

Go with the flow: Scientists design new grid batteries for renewable energy: New blueprint for affordable, sustainable 'flow batteries' developed at Berkeley Lab could accelerate an electrical grid powered by the sun and wind November 8th, 2019

Water

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Rice lab produces simple fluorescent surfactants: Compounds show promise for use in medicine, manufacturing August 5th, 2019

Wood You Like Some Fresh Water? New treatment for wood makes a membrane to extract fresh water August 5th, 2019

'Hot spots' increase efficiency of solar desalination: Rice University engineers boost output of solar desalination system by 50% June 19th, 2019

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

CEA-Leti Thin-Film Batteries Target Extended Applications and Improved Performance in Medical Implants: IEDM 2019 Paper Reports Millimeter-Scale TFBs Exhibit the Best Performance In Both Energy and Power Densities December 10th, 2019

New electrodes could increase efficiency of electric vehicles and aircraft November 22nd, 2019

Argonne collaborates to review current battery recycling processes for electric vehicles November 8th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Research partnerships

Electro-optical device provides solution to faster computing memories and processors: First-of-a-kind electro-optical device provides solution to faster and more energy efficient computing memories and processors December 2nd, 2019

The Greenest Diet: Bacteria Switch to Eating Carbon Dioxide: Such bacteria may, in the future, contribute to new, carbon-efficient technologies November 27th, 2019

Theorem explains why quantities such as heat and power can fluctuate in microscopic system: Brazilian researchers participate in theoretical study that could have practical applications in nanoscale machine optimization November 26th, 2019

Research shows old newspapers can be used to grow carbon nanotubes: Newspapers provide a green, economical way to produce carbon nanotubes November 22nd, 2019

Solar/Photovoltaic

Clear, conductive coating could protect advanced solar cells, touch screens: New material should be relatively easy to produce at an industrial scale, researchers say November 22nd, 2019

'Messy' production of perovskite material increases solar cell efficiency November 15th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Go with the flow: Scientists design new grid batteries for renewable energy: New blueprint for affordable, sustainable 'flow batteries' developed at Berkeley Lab could accelerate an electrical grid powered by the sun and wind November 8th, 2019

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project