3 research outputs found
research data for Song and Liu et al..xlsx
zinc isotope, iron isotope and element data from carbonate in the Gaoyuzhuang Formation at the mid-proterozoic.</p
Photonic-Structure Colored Radiative Coolers for Daytime Subambient Cooling
Daytime
subambient radiative cooling provides a powerful strategy
for realizing sustainable thermal management without any external
energy consumption. However, in practical situations a dazzling white
or silver appearance is undesirable for aesthetic and functional reasons.
Therefore, developing colored radiative cooling materials is greatly
significant for more potential applications but remains a big challenge
so far. Here, we reported a flexible colored radiative cooler based
on interferometric retroreflection-induced structural color, which
resolves the conflict between a colorful appearance for aesthetics
and high solar reflection for cooling. All colored radiative coolers
achieve subambient cooling of 4 K even under sunshine stronger than
1000 W/m2, while the same color commercial paints are 9–27
K higher than the ambient. Such a flexible, scalable, and low cost
colored radiative cooler is expected to replace commercial paint in
a practical scenario with aesthetic and cooling requirements, enabling
substantial reduction in carbon emission and energy consumption
Heavy Metal-Induced Assembly of DNA Network Biosensor from Double-Loop Hairpin Probes for Ultrasensitive Detection of UO<sub>2</sub><sup>2+</sup> in Water and Soil Samples
The uranyl ion (UO22+) is the most
stable form of uranium, which exhibits high toxicity and bioavailability
posing a severe risk to human health. The construction of ultrasensitive,
reliable, and robust sensing techniques for UO22+ detection in water and soil samples remains a challenge. Herein,
a DNA network biosensor was fabricated for UO22+ detection using DNAzyme as the heavy metal recognition element and
double-loop hairpin probes as DNA assembly materials. UO22+-activated specific cleavage of the DNAzyme will liberate
the triggered DNA fragment, which can be utilized to launch a double-loop
hairpin probe assembly among Hab, Hbc, and Hca. Through multiple cyclic cross-hybridization reactions,
hexagonal DNA duplex nanostructures (n[Hab•Hbc•Hca]) were formed. This
DNA network sensing system generates a high fluorescence response
for UO22+ monitoring. The biosensor is ultrasensitive,
with a detection limit of 2 pM. This sensing system also displays
an excellent selectivity and robustness, enabling the DNA network
biosensor to work even in complex water and soil samples with excellent
accuracy and reliability. With the advantages of enzyme-free operation,
outstanding specificity, and high sensitivity, our proposed DNA network
biosensor provides a reliable, simple, and robust method for trace
levels of UO22+ detection in environmental samples
