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Simon Pallin

Simon Pallin: Exploring the ins and outs of better building envelopes

A scientist that sings opera and performs in musical theater? Sure. If you're a Renaissance Man like Simon Pallin. Pallin is a researcher in Oak Ridge National Laboratory’s Buildings Technologies Research & Integration Center. But his early interests and activities reveal a versatile person that could have chosen a number of occupations.

In conventional, low-temperature superconductivity (left), so-called Cooper pairing arises from the presence of an electron Fermi sea. In the pseudogap regime of the cuprate superconductors (right), parts of the Fermi sea are “dried out” and the charge-ca

Titan Shines Light on High-Temperature Superconductor Pathway

When physicists Georg Bednorz and K. Alex Muller discovered the first high-temperature superconductors in 1986, it didn’t take much imagination to envision the potential technological benefits of harnessing such materials.
Department of Energy national lab researchers found strain dramatically influences low-temperature oxygen electrocatalysis on perovskite oxides, enhancing bifunctional activity essential for fuel cells and metal–air batteries.

ORNL researchers use strain to engineer first high-performance, two-way oxide catalyst

Catalysts make chemical reactions more likely to occur. In most cases, a catalyst that’s good at driving chemical reactions in one direction is bad at driving reactions in the opposite direction. However, a research team led by the Department of Energy’s Oak Ridge National Laboratory ...

A 3D structure of the HIV-1 protease in cartoon representation with bound clinical drug darunavir (shown as sticks).

Neutrons probe structure of enzyme critical to development of next-generation HIV drugs

A team led by the Department of Energy’s Oak Ridge National Laboratory used neutron analysis to better understand a protein implicated in the replication of HIV, the retrovirus that causes AIDS. The enzyme, known as HIV-1 protease, is a key drug target for HIV and AIDS therapies. &nbs...
In unbound calyx[4]pyrrole, two pyrrole “petals” are flipped up and two, down.

Chalice receptors attract metal contaminants with new chemical selectivity

Atomic charges in chemical solutions are like Switzerland—they strive for neutrality. The tendency to balance charges drives dynamics when charged atoms or molecules, called ions, are present in solutions. Recently, researchers at the Department of Energy’s Oak Ridge National Laborat...

Oak Ridge National Laboratory researchers made a molecule that could selectively bind to metals in the middle of the lanthanide series.

ORNL scientists show charged salts can extract specific central lanthanide elements

Rare earth elements are metals used in technologies from wind turbines and magnetic resonance imaging agents to industrial catalysts and high-definition televisions. Most are lanthanides, elements with atomic number from 57 to 71, lanthanum to lutetium, in the periodic table. The la...

Oak Ridge National Laboratory researchers re-evaluated used nuclear fuel rods from a commercial reactor and reduced data uncertainties by an order of magnitude compared with previous measurements taken at a different lab.

ORNL’s benchmark data set validates global nuclear reactor codes

Nearly 100 commercial nuclear reactors supply one-fifth of America’s energy. For each fuel rod in a reactor assembly, only 5 percent of its energy is consumed before fission can no longer be sustained efficiently for power production and the fuel assembly must be replaced. Power plan...

ORNL’s Jim Keiser and Mike Stephens (on stepladder) prepare to install samples in a Keiser rig, a furnace for exposing materials to corrosive gases, crushing pressures and calamitous heat. Image credit: Oak Ridge National Laboratory, U.S. Dept. of Energy;

‘Keiser rigs’ stress materials to the max to improve products for power, propulsion

The global marketplace demands constant improvements in performance and efficiency of aircraft engines, power turbines and other modern mainstays of energy technology. This progress requires advanced structural materials, such as ceramic composites and metal alloys with higher-t...
Researchers used experimental data to create a 23.7-million atom biomass model featuring cellulose (purple), lignin (brown), and enzymes (green). (Image credit: Mike Matheson, ORNL)

Titan Probes Depths of Biofuel’s Biggest Barrier

Ask a biofuel researcher to name the single greatest technical barrier to cost-effective ethanol, and you’re likely to receive a one-word response: lignin. Cellulosic ethanol—fuel derived from woody plants and waste biomass—has the potential to become an affordable, renew...
In pure water, lignin adopts a globular conformation (left) that aggregates on cellulose and blocks enzymes. In a THF-water cosolvent, lignin adopts coil conformations (right) that are easier to remove during pretreatment.

Biofuel Researchers Employ Titan to Probe ‘Lignin Shield’

When the Ford Motor Company’s first automobile, the Model T, debuted in 1908, it ran on a corn-derived biofuel called ethanol, a substance Henry Ford dubbed “the fuel of the future.”