Abstract:
:Understanding the remarkable excitonic effects and controlling the exciton binding energies in two-dimensional (2D) semiconductors are crucial in unlocking their full potential for use in future photonic and optoelectronic devices. Here, we demonstrate large excitonic effects and gate-tunable exciton binding energies in single-layer rhenium diselenide (ReSe2) on a back-gated graphene device. We used scanning tunneling spectroscopy and differential reflectance spectroscopy to measure the quasiparticle electronic and optical bandgap of single-layer ReSe2, respectively, yielding a large exciton binding energy of 520 meV. Further, we achieved continuous tuning of the electronic bandgap and exciton binding energy of monolayer ReSe2 by hundreds of milli-electron volts through electrostatic gating, attributed to tunable Coulomb interactions arising from the gate-controlled free carriers in graphene. Our findings open a new avenue for controlling the bandgap renormalization and exciton binding energies in 2D semiconductors for a wide range of technological applications.
journal_name
Sci Advjournal_title
Science advancesauthors
Qiu Z,Trushin M,Fang H,Verzhbitskiy I,Gao S,Laksono E,Yang M,Lyu P,Li J,Su J,Telychko M,Watanabe K,Taniguchi T,Wu J,Neto AHC,Yang L,Eda G,Adam S,Lu Jdoi
10.1126/sciadv.aaw2347subject
Has Abstractpub_date
2019-07-19 00:00:00pages
eaaw2347issue
7issn
2375-2548pii
aaw2347journal_volume
5pub_type
杂志文章相关文献
Science Advances文献大全abstract::Dual-comb spectroscopy allows for high-resolution spectra to be measured over broad bandwidths, but an essential requirement for coherent integration is the availability of a phase reference. Usually, this means that the combs' phase and timing errors must be measured and either minimized by stabilization or removed b...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1601227
更新日期:2016-11-11 00:00:00
abstract::Infants' remarkable learning abilities allow them to rapidly acquire many complex skills. It has been suggested that infants achieve this learning by optimally allocating their attention to relevant stimuli in the environment, but the underlying mechanisms remain poorly understood. Here, we modeled infants' looking be...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abb5053
更新日期:2020-09-23 00:00:00
abstract::Demonstration of ultralow energy switching mechanisms is imperative for continued improvements in computing devices. Ferroelectric (FE) and multiferroic (MF) order and their manipulation promise an ideal combination of state variables to reach attojoule range for logic and memory (i.e., ~30× lower switching energy tha...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aat4229
更新日期:2018-11-23 00:00:00
abstract::Prosocial behavior is paradoxical because it often entails a cost to one's own welfare to benefit others. Theoretical models suggest that prosociality is driven by several forms of reciprocity. Although we know a great deal about how each of these forms operates in isolation, they are rarely isolated in the real world...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aba0504
更新日期:2020-06-03 00:00:00
abstract::There have been increasing attempts to reverse habitat degradation through active restoration, but few large-scale successes are reported to guide these efforts. Here, we report outcomes from a unique and very successful seagrass restoration project: Since 1999, over 70 million seeds of a marine angiosperm, eelgrass (...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abc6434
更新日期:2020-10-07 00:00:00
abstract::Transplantation with donor corneas is the mainstay for treating corneal blindness, but a severe worldwide shortage necessitates the development of other treatment options. Corneal perforation from infection or inflammation is sealed with cyanoacrylate glue. However, the resulting cytotoxicity requires transplantation....
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aba2187
更新日期:2020-06-17 00:00:00
abstract::Organic carbonyl compounds represent a promising class of electrode materials for secondary batteries; however, the storage mechanism still remains unclear. We take Na2C6H2O4 as an example to unravel the mechanism. It consists of alternating Na-O octahedral inorganic layer and π-stacked benzene organic layer in spatia...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1500330
更新日期:2015-09-18 00:00:00
abstract::Changes in the Atlantic Meridional Overturning Circulation (AMOC) are moderate in most climate model projections under increasing greenhouse gas forcing. This intermodel consensus may be an artifact of common model biases that favor a stable AMOC. Observationally based freshwater budget analyses suggest that the AMOC ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1601666
更新日期:2017-01-04 00:00:00
abstract::Deforestation is the primary driver of carbon losses in tropical forests, but it does not operate alone. Forest fragmentation, a resulting feature of the deforestation process, promotes indirect carbon losses induced by edge effect. This process is not implicitly considered by policies for reducing carbon emissions in...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz8360
更新日期:2020-09-30 00:00:00
abstract::Nitrogen oxides (NO x ) emitted from human activities are believed to regulate the atmospheric oxidation capacity of the troposphere. However, observational evidence is limited for the low-to-median NO x concentrations prevalen...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aar2547
更新日期:2018-04-11 00:00:00
abstract::Half-filled Landau levels host an emergent Fermi liquid that displays instability toward pairing, culminating in a gapped even-denominator fractional quantum Hall ground state. While this pairing may be probed by tuning the polarization of carriers in competing orbital and spin degrees of freedom, sufficiently high qu...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aat8742
更新日期:2018-09-14 00:00:00
abstract::Electron interferometry via phase-contrast microscopy, holography, or picodiffraction can provide a direct visualization of the static electric and magnetic fields inside or around a material at subatomic precision, but understanding the electromagnetic origin of light-matter interaction requires time resolution as we...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abc8804
更新日期:2020-11-20 00:00:00
abstract::Over the past 5 years, parts of Oklahoma have experienced marked increases in the number of small- to moderate-sized earthquakes. In three study areas that encompass the vast majority of the recent seismicity, we show that the increases in seismicity follow 5- to 10-fold increases in the rates of saltwater disposal. A...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1500195
更新日期:2015-06-18 00:00:00
abstract::A key problem in the study of the senses is to describe how sense organs extract perceptual information from the physics of the environment. We previously observed that dynamic touch elicits mechanical waves that propagate throughout the hand. Here, we show that these waves produce an efficient encoding of tactile inf...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz1158
更新日期:2020-04-15 00:00:00
abstract::Microsupercapacitors (MSCs) have garnered considerable attention as a promising power source for microelectronics and miniaturized portable/wearable devices. However, their practical application has been hindered by the manufacturing complexity and dimensional limits. Here, we develop a new class of ultrahigh areal nu...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz1692
更新日期:2020-03-06 00:00:00
abstract::One of the most plausible scenarios of the origin of life assumes the preceding prebiotic autotrophic metabolism in sulfide-rich hydrothermal vent environments. However, geochemical mechanisms to harness the reductive power provided by hydrothermal systems remain to be elucidated. Here, we show that, under a geoelectr...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aav7848
更新日期:2019-06-19 00:00:00
abstract::Hydroxyapatite (HA) has been widely applied in bone repair because of its superior biocompatibility. Recently, a proliferation-suppressive effect of HA nanoparticles (n-HA) against various cancer cells was reported. This study was aimed at assessing the translational value of n-HA both as a bone-regenerating material ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aax6946
更新日期:2019-08-02 00:00:00
abstract::Although electromagnetic brain stimulation is a promising treatment in neurology and psychiatry, clinical outcomes are variable, and underlying mechanisms are ill-defined, which impedes the development of new effective stimulation protocols. Here, we show, in vivo and ex vivo, that repetitive transcranial magnetic sti...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aav9847
更新日期:2019-10-30 00:00:00
abstract::The degradation of cadmium sulfide (CdS)-based oil paints is a phenomenon potentially threatening the iconic painting The Scream (ca. 1910) by Edvard Munch (Munch Museum, Oslo) that is still poorly understood. Here, we provide evidence for the presence of cadmium sulfate and sulfites as alteration products of the orig...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aay3514
更新日期:2020-05-15 00:00:00
abstract::Improved constraints on lower-mantle composition are fundamental to understand the accretion, differentiation, and thermochemical evolution of our planet. Cosmochemical arguments indicate that lower-mantle rocks may be enriched in Si relative to upper-mantle pyrolite, whereas seismic tomography images suggest whole-ma...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1500815
更新日期:2015-12-10 00:00:00
abstract::A large body of previous neuroimaging studies suggests that multiple languages are processed and organized in a single neuroanatomical system in the bilingual brain, although differential activation may be seen in some studies because of different proficiency levels and/or age of acquisition of the two languages. Howe...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1603309
更新日期:2017-07-12 00:00:00
abstract::Since its domestication in the Fertile Crescent ~8000 to 10,000 years ago, wheat has undergone a complex history of spread, adaptation, and selection. To get better insights into the wheat phylogeography and genetic diversity, we describe allele distribution through time using a set of 4506 landraces and cultivars ori...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aav0536
更新日期:2019-05-29 00:00:00
abstract::The design of single-molecule photoswitchable emitters was the first milestone toward the advent of single-molecule localization microscopy, setting a new paradigm in the field of optical imaging. Several photoswitchable emitters have been developed, but they all fluoresce in the visible or far-red ranges, missing the...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aax1166
更新日期:2019-09-27 00:00:00
abstract::The discovery of high-temperature superconductivity in cuprates ranks among the major scientific milestones of the past half century, yet pivotal questions regarding the complex phase diagram of these materials remain unanswered. Generally thought of as doped charge-transfer insulators, these complex oxides exhibit ps...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aau4538
更新日期:2019-01-25 00:00:00
abstract::Immune regulatory metabolites are key features of the tumor microenvironment (TME), yet with a few exceptions, their identities remain largely unknown. Here, we profiled tumor and T cells from tumor and ascites of patients with high-grade serous carcinoma (HGSC) to uncover the metabolomes of these distinct TME compart...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abe1174
更新日期:2021-01-20 00:00:00
abstract::Using theory and experiments, we study the interface between two immiscible domains in a colloidal membrane composed of rigid rods of different lengths. Geometric considerations of rigid rod packing imply that a domain of sufficiently short rods in a background membrane of long rods is more susceptible to twist than t...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aba2331
更新日期:2020-07-29 00:00:00
abstract::Adoptive cell transfers have emerged as a disruptive approach to treat disease in a manner that is more specific than using small-molecule drugs; however, unlike traditional drugs, cells are living entities that can alter their function in response to environmental cues. In the present study, we report an engineered p...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz6579
更新日期:2020-04-29 00:00:00
abstract::We report a negative resistance, namely, a voltage drop along the opposite direction of a current flow, in the superconducting gap of NbSe2 thin films under the irradiation of surface acoustic waves (SAWs). The amplitude of the negative resistance becomes larger by increasing the SAW power and decreasing temperature. ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aba1377
更新日期:2020-08-21 00:00:00
abstract::Fibrosis, characterized by aberrant tissue scarring from activated myofibroblasts, is often untreatable. Although the extracellular matrix becomes increasingly stiff and fibrous during disease progression, how these physical cues affect myofibroblast differentiation in 3D is poorly understood. Here, we describe a mult...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abb5069
更新日期:2020-09-09 00:00:00
abstract::A novel, thin-film platform that preserves live viruses, bacteria, antibodies, and enzymes without refrigeration for extended periods of time is described. Studies with recombinant adenovirus in an optimized formulation that supports recovery of live virus through 16 freeze-thaw cycles revealed that production of an a...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aau4819
更新日期:2020-03-04 00:00:00