- Time-optimized pulsed dynamic nuclear polarization
TOP-DNP is an innovative pulsed DNP method that efficiently enhances NMR signals with moderate microwave power at high fields.
- Resonant inelastic x-ray incarnation of Young’s double-slit experiment
RIXS interferometry is a promising new tool for studying the symmetry and character of excited states in complex materials.
- Battery-free, skin-interfaced microfluidic/electronic systems for simultaneous electrochemical, colorimetric, and volumetric analysis of sweat
Battery-free, wireless microfluidic/electronic system for multiparameter sweat analysis.
- Boosting contact sliding and wear protection via atomic intermixing and tailoring of nanoscale interfaces
Multiple mixed interfaces and a critical carbon thickness in sub-10-nm overcoats are essential for low wear and friction.
- Gate tuning from exciton superfluid to quantum anomalous Hall in van der Waals heterobilayer
Heterobilayers of 2D semiconductors can be gate tuned from exciton superfluid to quantum anomalous or quantum spin Hall insulator.
- Polymorphism of bulk boron nitride
High-level many-body ab initio calculations reveal a strong phase competition in boron nitride near-ambient conditions.
- Adaptive locomotion of artificial microswimmers
Artificial microswimmers display adaptive locomotion by autonomously morphing in response to physical changes in the environment.
- Laser-writable high-k dielectric for van der Waals nanoelectronics
2D material compatible, writable, and high-k multifunctional oxide facilitates next-generation flexible van der Waals electronics.
- Disentangling the size-dependent geometric and electronic effects of palladium nanocatalysts beyond selectivity
Site-selective blocking by ALD disentangles the geometric and electronic effects of catalysts beyond the selectivity volcano.
- High extinction risk for wild coffee species and implications for coffee sector sustainability
Extinction threatens at least 60% of wild coffee species, including those that are key to the future of the global coffee sector.
- Deterministic splicing of Dscam2 is regulated by Muscleblind
Alternative splicing of Drosophila Dscam2 is regulated by cell type–specific expression of the RNA binding protein Muscleblind.
- Acclimation of methane emissions from rice paddy fields to straw addition
The effects of straw incorporation on CH4 emissions from rice fields decrease over time, due to increased CH4 consumption in soil.
- Full in vivo characterization of carbonate chemistry at the site of calcification in corals
In vivo measurements of [Ca2+] and [CO32−] indicate biological control of carbonate chemistry at site of calcification in corals.
- Engineered botulinum neurotoxin B with improved binding to human receptors has enhanced efficacy in preclinical models
We report the preclinical characterization of two engineered botulinum neurotoxin serotype B proteins with significant therapeutic potential.
About The Cover
ONLINE COVER To determine how North Africa's climate has evolved over the past millions of years, experts have studied dust flux records from marine sediments. These long-term records are based largely on fluxes calculated using age model-based mass accumulation rates (MARs). However, this method suffers from many potential biases, including limited resolution. The paleoclimate community has recently diverted from the MAR approach and has started to use constant flux proxies, such as excess 230Th from seawater that can be used to determine sediment accumulation rates. Relying on 230Th from marine sediment cores to more reliably calculate fluxes, Skonieczny et al. present the first Saharan dust record than spans many glacial cycles. They discovered that in the Sahara Desert, dust emissions over the last 240,000 years have varied in accordance with Northern Hemisphere summer monsoons rather than glacial-interglacial changes as had been previously assumed. These results question the use of existing Pleistocene dust records to examine the connections between climate and hominid evolution. CREDIT: GIDEON MENDEL/CORBIS VIA GETTY IMAGES