Wei-Li Lee

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Glutamate clearance by astrocytes is critical for controlling excitatory neurotransmission and ATP is an important mediator for neuron-astrocyte interaction. However, the effect of ATP on glutamate clearance has never been examined. Here we report that treatment of RBA-2 cells, a type-2-like astrocyte cell line, with ATP and the P2X(7) receptor selective(More)
The authors describe a data exploration system that visualizes time-varying, multivariate, point-based data from gyrokinetic particle simulations. By using two interaction modes, their system lets researchers explore collections of densely packed particles and discover interesting aspects, such as the location and motion of particles trapped in turbulent(More)
The FPGAs (Field-Programmable Gate Array) are popular in hardware designs and even hardware/software co-designs. Due to the advance of manufacturing technologies, leakage power has become an important issue in the design of modern FPGAs. In particular, the partially dynamical reconfigurable FPGAs allow the latency between FPGA reconfiguration and task(More)
After decades of searching for the dissipationless transport in the absence of any external magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic topological insulator films. However, the universal phase diagram of QAHE and its relation with quantum Hall effect (QHE) remain to be investigated. Here, we report the(More)
—Particle simulations are powerful tools for understanding the complex phenomena associated with many areas of physics research, including confined plasma and high energy particle beams. The simulations are conducted on massively parallel computers, and the results provide minimal deviation from kinetic equations. Analyzing the data, however, presents a(More)
The quest for materials showing large thermoelectric power has long been one of the important subjects in material science and technology. Such materials have great potential for thermoelectric cooling and also high figure of merit ZT thermoelectric applications. We have fabricated bilayer graphene devices with ionic-liquid gating in order to tune its band(More)
The National Energy Research Scientific Computing Center (NERSC) was originally launched as a computing center for the exclusive support of magnetic confinement fusion research in the US. There is, thus, a long history of computational advances and successes that ties fusion scientists with NERSC and its staff. One example of the numerous computational(More)
the BiTe structure, which is made from the stacking of two Te-BiTe -BiTe blocks and one Bi-Bi block per unit cell. Crystal structure analysis shows that Mn is localized in the Bi 2 blocks, and is accompanied by an equal amount of Te Bi anti-site occupancy in the Bi 2 Te 3 blocks. These Te Bi anti-site defects greatly enhance the Mn solubility. This is(More)
In a ferromagnet, an anomalous Hall heat current, given by the off-diagonal Peltier term alpha(xy), accompanies the anomalous Hall current. By combining Nernst, thermopower, and Hall experiments, we have measured how alpha(xy) varies with hole density and lifetime tau in CuCr2Se4-xBrx. At low temperatures T, we find that alpha(xy) is independent of tau,(More)