Publications by authors named "Dongrui Liu"
Article Synopsis
- Thermoelectrics can efficiently recover waste heat and cool electronics, but their use is limited due to the shortage of BiTe materials.
- Researchers developed a low-cost, earth-abundant PbS compound that achieved a record-high ZT of 0.64 and has impressive cooling capabilities with a temperature difference of ~36.9 K.
- The new n-type PbS material also shows about 8% efficiency in power generation, highlighting its potential as a sustainable alternative to BiTe in thermoelectric applications.
Article Synopsis
- Thermoelectric materials, particularly BiTe, are important for refrigeration and power generation but face limitations due to the poor performance of n-type BiTe; thus, improving n-type BiTe is crucial.
- This study introduces interstitial copper and a hot deformation process to enhance the thermoelectric properties of BiTeSe, resulting in a high-performance material with notable improvements in mechanical and thermoelectric characteristics.
- The new n-type CuBiTeSe outperforms existing commercial devices, achieving a maximum ZT of 1.27 and displaying remarkable efficiencies in both thermoelectric cooling and power generation applications.
The scarcity of Te hampers the widespread use of BiTe-based thermoelectric modules. Here, the thermoelectric module potential of PbSe is investigated by improving its carrier mobility. Initially, large PbSe crystals are grown with the temperature gradient method to mitigate grain boundary effects on carrier transport.
View Article and Find Full Text PDFThermoelectric cooling technology has important applications for processes such as precise temperature control in intelligent electronics. The bismuth telluride (BiTe)-based coolers currently in use are limited by the scarcity of Te and less-than-ideal cooling capability. We demonstrate how removing lattice vacancies through a grid-design strategy switched PbSe from being useful as a medium-temperature power generator to a thermoelectric cooler.
View Article and Find Full Text PDFArticle Synopsis
- This study focuses on improving p-type PbSe for thermoelectric applications like power generation and refrigeration by enhancing carrier mobility through lattice plainification.
- By growing Cu-doped p-type PbSe crystals via physical vapor deposition, researchers achieved a high carrier mobility of approximately 2578 cm/V·s, resulting in notable thermoelectric properties.
- The optimized PbCuSe shows a power factor of around 42 µW/cm·K and a ZT value that can reach 0.9 across a temperature range of 300-573 K, demonstrating its potential to compete with commercial BiTe in both power generation efficiency and cooling applications.
The room-temperature thermoelectric performance of materials underpins their thermoelectric cooling ability. Carrier mobility plays a significant role in the electronic transport property of materials, especially near room temperature, which can be optimized by proper composition control and growing crystals. Here, we grow Pb-compensated AgPbSbTe crystals using a vertical Bridgman method.
View Article and Find Full Text PDFThermoelectric technology has been widely used for key areas, including waste-heat recovery and solid-state cooling. We discovered tin selenide (SnSe) crystals with potential power generation and Peltier cooling performance. The extensive off-stoichiometric defects have a larger impact on the transport properties of SnSe, which motivated us to develop a lattice plainification strategy for defects engineering.
View Article and Find Full Text PDFCrystalline thermoelectrics have been developed to be potential candidates for power generation and electronic cooling, among which SnSe crystals are becoming the most representative. Herein, we realize high-performance SnSe crystals with promising efficiency through a structural modulation strategy. By alloying strontium at Sn sites, we modify the crystal structure and facilitate the multiband synglisis in p-type SnSe, favoring the optimization of interactive parameters μ and m.
View Article and Find Full Text PDFChemotherapy resistance of tumor cells causes failure in anti-tumor therapies. Recently, N-terminal regulator of chromatin condensation 1 methyltransferase (NRMT) is abnormally expressed in different cancers. Hence, we speculate that NRMT may pay a crucial role in the development of chemosensitivity in retinoblastoma.
View Article and Find Full Text PDFPurpose: The causal genes for congenital cataract are good candidates for the genetic susceptibility for age-related cataract (ARC). The aim of this study was to investigate association between the polymorphisms in the causal genes for congenital cataract and ARC in a Chinese population. Meanwhile, we performed the replication study for previous identified risk genes for ARC.
View Article and Find Full Text PDFA novel dual-function material was synthesized by anchoring a molecularly imprinted polymer (MIP) layer on CdTe/ZnS quantum dots (QDs) using a sol-gel with surface imprinting. The material exhibited highly selective and sensitive determination of ractopamine (RAC) through spectrofluorometry and solid-phase extraction (SPE) coupled with high performance liquid chromatography (HPLC). A series of adsorption experiments revealed that the material showed high selectivity, good adsorption capacity and a fast mass transfer rate.
View Article and Find Full Text PDFPurpose: The aim of this study was to identify glucocorticoid induced cataracts (GIC)-specific modified water insoluble-urea soluble (WI-US) crystallins and related changes after rat lens were exposed to dexamethasone (Dex).
Methods: We separated WI-US lens proteins by two-dimensional electrophoresis (2-DE). The crystallins were then analyzed with matrix assisted laser desorption/ionization time-of-flight tandem mass spectrometry (MALDI-TOF-MS/MS).