Science - USA (2020-05-22)

and fig. S17), and <5% of inner nanotrenches were unoccupied by CNTs (fig. S25). In liquid-mode atomic force microscopy (AFM) ...

deposition–grown or polymer-wrapped CNT arrays in a follow-up study ( 32 ). Additionally, using purer semiconducting CNTs may fu ...

DEVICE TECHNOLOGY DNA-directed nanofabrication of high-performance carbon nanotube field-effect transistors Mengyu Zhao^1 , Yaho ...

current density divided by off-state current density,Ion/Ioff, exceeded 10^3 ; fig. S7). The other seven devices exhibitedIon/Io ...

(including crossing CNTs) ( 5 ) raise the sub- threshold swing ( 4 ). We observed a wide di- ameter distribution of the DNA-wrap ...

REFERENCES AND NOTES “2013 International Technology Roadmap for Semiconductors (ITRS)”(Semiconductor Industry Association, 2013 ...

POLLINATORS Bumble bees damage plant leaves and accelerate flower production when pollen is scarce Foteini G. Pashalidou1,2, Har ...

adjacent to a patch of 36 flowerless plants (from six different species; see supplemen- tary materials for details). The colony ...

is also exhibited by wild bees. Indeed, some B. terrestrisworkers observed damaging plants mayalsohavecomefromwildcolonies,al- t ...

queenright colonies and tracked damage by multiple replicate colonies that were simul- taneously exposed to environments differi ...

CHEMICAL PHYSICS Simultaneous observation of nuclear and electronic dynamics by ultrafast electron diffraction Jie Yang1,2†, Xia ...

access inelastic scattering at small angles, we intentionally set the main electron beam off- center from the hole of the detect ...

To further show this correlation, we simulated the PDsimTotalsignal for S 0 and S 1 states over all trajectories (Fig. 3B). We f ...

materials) ( 33 ). Three fitted structural parameters— dihedral anglea, interior angleb,andaverage bond length of the ringDr—are ...

J. H. Wang, A. N. Tripathi, V. H. Smith Jr.,J. Chem. Phys. 101 , 4842 – 4854 (1994). Y.Sasaki,H.Takeuchi,S.Konaka,M.Kimura,Int. ...

METROLOGY Coherent optical clock down-conversion for microwave frequencies with 10 − 18 instability Takuma Nakamura1,2, Josue Da ...

respective repetition rates of 208 and 156 MHz. These OFCs were engineered for long-term, phase-slip-free operation and contribu ...

outputs, a direct optical comparison of the clocks was made. This was performed by com- bining the optical clock signals onto a ...

are several known techniques for improving optical clock performance beyond that which is demonstrated here—such as real-time bl ...

STRUCTURAL BIOLOGY Ion transport and regulation in a synaptic vesicle glutamate transporter Fei Li1,2, Jacob Eriksen^2 , Janet F ...