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A high performance hollow gold nanoparticles (HGNs) decorated one-dimensional (1-D) Bi2S3 nanoribbon (NR) photodetector was fabricated for green light detection (560 nm). The single crystal 1-D Bi2S3 NRs with growth orientation along [001] were synthesized by a simple solvothermal approach. Optoelectronic analysis reveals that the performance of the plasmonic photodetector was greatly enhanced after decoration with HGNs. For example, the responsivity increases from 1.4 × 102 to 1.09 × 103 AW−1, the conductivity gain from 2.68 × 102 to 2.31 × 103, and the detectivity from 2.45 × 1012 to 2.78 × 1013, respectively. Such performance enhancement was attributed to the localized surface plasmon resonance (LSPR) effect caused by the HGNs according to both experiment and theoretical simulation. This study is believed to open up new opportunities for managing light and enhancing the device performance of other 1-D semiconductor nanostructures based optoelectronic devices and systems.

A high performance hollow gold nanoparticles (HGNs) decorated one-dimensional (1-D) Bi2S3 nanoribbon (NR) photodetector was fabricated for green light detection (560 nm). The single crystal 1-D Bi2S3 NRs with growth orientation along [001] were synthesized by a simple solvothermal approach. Optoelectronic analysis reveals that the performance of the plasmonic photodetector was greatly enhanced after decoration with HGNs. For example, the responsivity increases from 1.4 × 102 to 1.09 × 103 AW−1, the conductivity gain from 2.68 × 102 to 2.31 × 103, and the detectivity from 2.45 × 1012 to 2.78 × 1013, respectively. Such performance enhancement was attributed to the localized surface plasmon resonance (LSPR) effect caused by the HGNs according to both experiment and theoretical simulation. This study is believed to open up new opportunities for managing light and enhancing the device performance of other 1-D semiconductor nanostructures based optoelectronic devices and systems. [ABSTRACT FROM AUTHOR]

Here we report a 67-year-old Chinese male carrying an unstable novel hemoglobin (Hb) variant in compound heterozygosity with the – –SEA (Southeast Asian) α-thalassemia (α-thal) deletion. Hemoglobin analysis by capillary electrophoresis (CE) revealed a rapid degradation feature of the variant. Sanger sequencing of the Hb gene revealed a novel homozygous mutation in exon 2 of the α1-globin gene [α52(E1)Ser→Cys (TCT>TGT); HBA1: c.158C>G]. We named this novel variant Hb Dongguan for the place of origin of the proband. Additionally, gap-polymerase chain reaction (gap-PCR) indicated the presence of the heterozygous – –SEA α-thal deletion. [ABSTRACT FROM AUTHOR]

Different nutrient media experimentally were N, P and Fe-limited conditions and a serial of diluted BG11 media. The cell change of morphology and life history, cell number, cell color and cell area of Microcystis were analyzed quantitatively. First, the effects of nitrogen, phosphorus and iron depletion were distinctively different. Phosphorus and iron depletion caused more special division cells, slowly growth increasing, the easier change of bigger cell area. Second, the nitrogen and iron depletion could make the color of alga from green to brown. Finally, according to the resource competition and Monod equation, Microcystis kinetics of phosphorus and iron were also examined. K_s and μ_{max} of phosphorus absorption were 0.0352 μmol/L, 0.493 d^{-1} respectively; iron absorption: 0.00323 μmol/L, 0.483 d^{-1}. In a word, some evidences of the Microcystis bloom privilege in certain nutrient conditions were indicated in the experiments. The privileges were determined as the reviving under the adverse circumstances through the special division, the various nitrogen resources, and the lower kinetics of phosphorus and iron than that of most of other algae. The conclusions provided the scientific basis for preventing and managing Microcystis bloom in freshwater. [ABSTRACT FROM AUTHOR]

Discovering new deep ultraviolet (DUV) nonlinear optical (NLO) materials is the current research hotspot. However, how to perfectly integrate several stringent performances into a crystal is a great challenge because of the natural incompatibility among them, particularly wide band gap and large NLO coefficient. To tackle the challenge, a boron-rich closed-loop strategy is supposed, based on which a new barium borate, Ba 4 B 14 O 25 , is designed and synthesized successfully via the high-temperature solid-state melting method. It features a highly polymeric 3D geometry with the closed-loop anionic framework [B 14 O 25 ] 8- constructed by the fundamental building blocks [B 14 O 33 ] 24- . The high-density π-conjugated [BO 3 ] 3- groups and the fully closed-loop B-O-B connections make Ba 4 B 14 O 25 possess excellent NLO properties, including short UV cutoff edge (<200 nm), large second harmonic generation response (3.0 × KDP) and phase-matching capability, being a promising DUV-transparent NLO candidate material. The work provides a creative design strategy for the exploration of DUV NLO crystals., (© 2023 Wiley‐VCH GmbH.)

A novel barium zinc borate contains π-conjugated [B 3 O 6 ] 3- anions and [B 6 O 12 ] 6- anion with edge-sharing BO 4 tetrahedra, Ba 6 Zn 6 (B 3 O 6 ) 6 (B 6 O 12 ), has been successfully synthesized via a high-temperature solution reaction. In its structure, the isolated planar π-conjugated B 3 O 6 groups are interconnected by ZnO 4 tetrahedra via corner sharing to construct a [Zn 3 (B 3 O 6 ) 3 ] 3- single layer parallel to the ab plane with the large Zn 3 B 6 9-member rings. Two adjacent [Zn 3 (B 3 O 6 ) 3 ] 3- single layers are interconnected by [B 6 O 12 ] 6- anions into a two-dimensional [Zn 6 (B 3 O 6 ) 6 (B 6 O 12 )] 12- double layer with 1D tunnels of Zn 4 B 8 12-member rings along the a -axis. Neighboring such double layers are packed in an A-B-A-B... fashion along the c axis, and the Ba 2+ ions act as counterbalance cations filling in the voids of double layers. All of the planar π-conjugated [B 3 O 6 ] 3- groups in Ba 6 Zn 6 (B 3 O 6 ) 6 (B 6 O 12 ) are in approximately parallel arrangement, producing large optical anisotropy and birefringence. The UV-vis-NIR absorption spectrum manifests that the UV cutoff edge for the title compound is below 200 nm. Ba 6 Zn 6 (B 3 O 6 ) 6 (B 6 O 12 ) possesses the largest birefringence (0.115@1064 nm) among the zincoborates reported. Its thermal stability, infrared spectrum, and theoretical calculations were also performed.

Two new borogermanate/borosilicate fluorides, namely, NaBa 3 [M 2 B 7 O 16 (OH) 2 ]F 2 (M = Ge, Si), have been successfully synthesized through a conventional mild hydrothermal method. They represent the first examples of mixed alkali and alkaline-earth borogermanate/borosilicate fluorides. NaBa 3 [M 2 B 7 O 16 (OH) 2 ]F 2 (M = Ge, Si) crystallize in the space group of C 2/ c , and their structures feature a unique 3D anionic framework composed of [B 7 O 16 (OH) 2 ] 13- polyanions corner-sharing with SiO 4 or GeO 4 tetrahedra, forming 1D 10-membered-ring tunnels along the b axis, which are filled by Na + , Ba 2+ , and F - ions. UV-vis-near-IR absorption spectra identify the title compounds possessing short deep-ultraviolet absorption edges (below 200 nm), while their birefringences were calculated to be 0.021 and 0.016 at 1064 nm, respectively. Optical property, thermal stability, and theoretical calculations have also been conducted on NaBa 3 [M 2 B 7 O 16 (OH) 2 ]F 2 (M = Ge, Si).

Explorations of new types of borates are important because of their promising application in diverse fields. A new bismuth-containing boroselenite, Bi 2 [B 2 (SeO 3 ) 6 ], has been obtained through high-temperature solid-state reaction in a closed system. Bi 2 [B 2 (SeO 3 ) 6 ] possesses a zero-dimensional [B 2 (SeO 3 ) 6 ] 6- anionic group that does not belong to any types of reported boroselenites. Besides, Bi 2 [B 2 (SeO 3 ) 6 ] is the first boroselenite with lone-pair electrons containing a metal ion as the countercation. More interestingly, on the basis of the first-principles calculations, this compound displays a large birefringence (0.090) at 1064 nm.

Here we report a 67-year-old Chinese male carrying an unstable novel hemoglobin (Hb) variant in compound heterozygosity with the - - SEA (Southeast Asian) α-thalassemia (α-thal) deletion. Hemoglobin analysis by capillary electrophoresis (CE) revealed a rapid degradation feature of the variant. Sanger sequencing of the Hb gene revealed a novel homozygous mutation in exon 2 of the α1-globin gene [α52(E1)Ser→Cys (T C T>T G T); HBA1 : c.158C>G]. We named this novel variant Hb Dongguan for the place of origin of the proband. Additionally, gap-polymerase chain reaction (gap-PCR) indicated the presence of the heterozygous - - SEA α-thal deletion.

The emission spectra of pure oxygen in dielectric barrier discharge at atmospheric pressure were observed. Comparison between experimental and fitting spectra of oxygen A band (b 1Sigmag(+) --> X 3Sigmag(-)) (0, 0) was used to determine the gas temperature, and the electronic temperature was calculated from O I lines. The causation of oxygen A band in atmospheric dielectric barrier discharge was discussed by means of analysis of producing and quenching approaches. The result showed that the electronic temperature, (11,800+/-400) K, was much higher than the gas temperature, (650+/-20) K. The emission from a 1Deltag or A 3Sigmau(+) was not been observed, but atmospheric band with its resoluble rotational structure was measured.