A5016336967- Geology and Paleoclimatology Research
- Geological and Geophysical Studies
- Coral and Marine Ecosystems Studies
- Pleistocene-Era Hominins and Archaeology
- Geological formations and processes
- Archaeology and ancient environmental studies
- Isotope Analysis in Ecology
- Geochemistry and Elemental Analysis
- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Karst Systems and Hydrogeology
- Pacific and Southeast Asian Studies
- Paleontology and Stratigraphy of Fossils
- Maritime and Coastal Archaeology
- Archaeological and Geological Studies
- Geomagnetism and Paleomagnetism Studies
- Climate variability and models
- Ocean Acidification Effects and Responses
- Organic Light-Emitting Diodes Research
- Marine and fisheries research
- Organic Electronics and Photovoltaics
- Geochemistry and Geologic Mapping
- Coastal wetland ecosystem dynamics
- Marine and coastal plant biology
- Oceanographic and Atmospheric Processes
ETH Zurich
2016-2024
Nanjing Normal University
2022-2024
National Taiwan University
2013-2022
East Asia School of Theology
2021
The University of Tokyo
2021
Board of the Swiss Federal Institutes of Technology
2020
Indonesian Institute of Sciences
2016
Ter(9,9‐diarylfluorene)s (TDAFs) exhibit many intriguing properties promising for blue light‐emitting devices, such as high thin‐film photoluminescence quantum yields (∼ 90 %), glass‐transition temperatures (> 200 °C), and an unusual ambipolar carrier‐transport capability. Successful implementation of a double‐ heterostructure device configuration that provides effective confinement both carriers excitons in TDAFs results electroluminescence performance (5.3 % external efficiency)...
Understanding tissue biodistribution and clearance of zinc oxide nanoparticles (ZnO-NPs) is necessary for its risk assessment. Both fed intraperitoneally injected ZnO-NPs (2.5 g/kg) were absorbed into circulation (within 30 min post-dosing), then biodistributed to the liver, spleen, kidney. Intraperitoneally remained in serum 72 h could more effectively spread heart, lung, testes, whereas began 6 after oral administration. Compared with microparticles (ZnO-MPs), exhibited much higher...
A series of novel materials based on bi(9,9-diaryfluorene)s are the first examples pure aromatic hydrocarbons as potential UV emitters in organic light-emitting devices (OLEDs). The Figure, photographed a normal lighting environment, shows strong red, green, and blue emission from corresponding fluorescent dye solutions pumped by OLED this work, demonstrating OLED, its pumping capability.
Abstract Highly efficient orange and green emission from single‐layered solid‐state light‐emitting electrochemical cells based on cationic transition‐metal complexes [Ir(ppy) 2 sb]PF 6 [Ir(dFppy) (where ppy is 2‐phenylpyridine, dFppy 2‐(2,4‐difluorophenyl)pyridine, sb 4,5‐diaza‐9,9′‐spirobifluorene) reported. Photoluminescence measurements show highly retained quantum yields for in neat films (compared with of these dispersed m ‐bis( N ‐carbazolyl)benzene films). The spiroconfigured ligands...
Abstract The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on Earth. Few direct long-term records, especially in Pacific, limit our understanding of natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from Southern Hemisphere covering past 282,000 years, inferred marine sedimentary sequence collected off eastern coast Papua New Guinea. Unlike precession paradigm expressed its East Asian counterpart, shows that...
Significance We present a high-resolution, replicated speleothem δ 18 O record from Klang Cave in southern Thailand that characterizes rainfall variation NCIP over the past 2,700 y. This reveals notable dry climate conditions during current and warm periods, similar to observations SCIP, which resemble enhanced El Niño-like conditions. Using newly developed ITCZ shift index, we find southward shifted early MWP CWP. Our results suggest detecting changes due anthropogenic forcing still remains...
Abstract Over at least the past millennium, Mentawai segment of Sunda megathrust has failed in sequences closely timed events rather than single end‐to‐end ruptures—each culmination an earthquake “supercycle.” Here we synthesize sixteenth‐ and seventeenth‐century coral microatoll records into a chronology interseismic coseismic vertical deformation. We identify five discrete uplift about 1597, 1613, 1631, 1658, 1703 that likely correspond to large ruptures. This sequence contrasts with...
Fossil coral microatolls from fringing reefs above the great (MW 8.6) megathrust rupture of 2005 record uplift during historically reported earthquake 1861. Such evidence spans nearly entire 400-km strike length rupture, which was previously shown to be bounded by two persistent barriers seismic rupture. Moreover, at sites where we have constrained 1861 amplitude, it is comparable in 2005. Thus and ruptures appear similar both extent magnitude. At one site an around AD 1422 also appears...
Abstract We refer to periods of subduction strain accumulation beneath the Mentawai Islands, Sumatra, as “supercycles,” because each culminates in a series partial ruptures megathrust its final decades. The finale previous supercycle comprised two giant earthquakes 1797 and 1833 whatever happened between. This behavior between great has implications for how will behave more recent failure, during M w 8.4 earthquake 2007, subsequent large ruptures. synthesize previously published coral...
The association between solar activity and Asian monsoon (AM) remains unclear. Here we evaluate the possible connection them based on a precisely-dated, high-resolution speleothem oxygen isotope record from Dongge Cave, southwest China during past 4.2 thousand years (ka). Without being adjusted chronologically to signal, our shows distinct peak-to-peak correlation with cosmogenic nuclide (14)C, total irradiance (TSI), sunspot number (SN) at multi-decadal centennial timescales. Further...
The first "Out of Africa" migrations represent a seminal event in the history humankind. At gates Europe, appearance Hominins is recorded Georgia, 1.8 million years ago (Ma); however, picture migration across continent remains incomplete. Vallonnet Cave (France) Lower Paleolithic prehistoric site with traces hominin activities including lithic and cut-marks on mammal bones. Here, we apply uranium-lead (U-Pb) methods to two flowstones date intervening archaeological levels. U-Pb data, coupled...
Abstract The variability of the northern westerlies has been considered as one key elements for modern and past climate evolution. Their multiscale behavior underlying control mechanisms, however, are incompletely understood, owing to complex dynamics Atlantic sea-level pressures. Here, we present a multi-annually resolved record westerly drift over 6,500 years from Italy. In combination with more than 20 other westerly-sensitive records, our results depict non-stationary westerly-affected...
Modern acidification by the uptake of anthropogenic CO2 can profoundly affect physiology marine organisms and structure ocean ecosystems. Centennial-scale global regional influences remain largely unknown due to limited instrumental pH records. Here we present coral boron isotope-inferred records for two periods from South China Sea: AD 1048-1079 1838-2001. There are no significant differences between first period at Medieval Warm Period 1830-1870. However, find anomalous unprecedented...
Speleothem inclusion-water isotope compositions are a promising new climatic proxy, but their applicability is limited by low content in water and analytical challenges. We have developed precise accurate isotopic technique that based on cavity ring-down spectroscopy (CRDS). This method features newly crushing apparatus, refined sample extraction line, careful evaluation of the water/carbonate adsorption effect. After chipped speleothem newly-developed device, released inclusion purified...
Refined radio-isotopic dating techniques have been applied to Orgnac 3, a Late Acheulean and Early Middle Palaeolithic site in France. Evidence of Levallois core technology appeared level 4b the middle sequence, became predominant upper horizons, was best represented uppermost 1, making one oldest examples technology. In our study, fourteen speleothem samples from levels 7, 6 5b, were U/Th-dated. Four pure calcite PL1 (levels 6) yield ages between 265 ± 4 (PL1-3) 312 15 (PL1-6) thousand...
The interpretation of trace element/calcium ratios speleothems as indicators local hydroclimatic variability in the vicinity caves has led to controversy reconstructing evolution moisture conditions arid central Asia (ACA) during Holocene. Here we present records Mg/Ca, Sr/Ca, Ba/Ca, and U/Ca from precisely dated stalagmites Baluk cave Xinjiang (northwest China), spanning past 9370 years. co-variations element ratios, together with slopes regression lines corresponding logarithmically...
Abstract. Sea surface temperature (SST) variability in the south-eastern tropical Indian Ocean is crucial for rainfall rim countries. A large body of literature has focused on zonal associated with Dipole (IOD) which peaks austral spring. In today's climate, northward shifts Tropical Convergence Zone (TCZ) co-vary IOD, and it unclear whether these may also occur independently. We have developed a new monthly resolved Sr/Ca record from sub-fossil coral cored at Enggano Island (Sumatra,...
ABSTRACT A flowstone from the central European Abaliget Cave (Mecsek Mts, Hungary) provides a record of uninterrupted calcite deposition between ∼160 and ∼124 ka, covering most Marine Isotope Stage (MIS) 6 part 5e. δ 18 O values three lateral drill cores show synchronous high‐frequency (millennial‐scale) variability during MIS 6, interpreted as stadials interstadials, 3.4‰ rise at 6/5e boundary. The interstadials are mostly symmetrical in shape consistently lower than formed rises...
Polarity reversals of the geomagnetic field have occurred through billions years Earth history and were first revealed in early 20th century. Almost a century later, details transitional behavior during excursions remain poorly known. Here, we present multidecadally resolved excursion record from radioisotopically dated Chinese stalagmite at 107-91 thousand before with age precision several decades. The duration directional oscillations ranged centuries 106-103 to millennia 98-92 present,...
Abstract Histories of vertical crustal motions at convergent margins offer fundamental insights into the relationship between interplate slip and permanent deformation. Moreover, past abrupt are proxies for potential tsunamigenic earthquakes benefit hazard assessment. Well-dated records required to understand Holocene Here we measure elevations 230 Th ages in situ corals raised above sea level western Solomon Islands build an uplift event history overlying seismogenic zone, extremely close...