Internal 3D temperature mapping in biological systems using ratiometric light-sheet imaging and lipid-coated upconversion nanothermometers

• Dannareli Barron-Ortiz,
• Enric Pérez-Parets,
• Rubén D. Cadena-Nava,
• Emilio J. Gualda,
• Jacob Licea-Rodríguez,
• Juan Hernández-Cordero,
• Pablo Loza-Álvarez and
• Israel Rocha-Mendoza

Beilstein J. Nanotechnol. 2025, 16, 2306–2316, doi:10.3762/bjnano.16.159

• photonic UC of multiple NIR photons into visible luminescence [38]. As an example, in the NaYF4:Er3+/Yb3+ composite (such as that used in this work), the NaYF4 crystal matrix is co-doped with Yb3+ acting as the sensitizer to enhance the NIR absorption cross section, whereas the Er3+ ion acts as the emitter

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• luminescence quantum yield at room temperature conditions [87][88]. Although nearly all lanthanide elements display photoluminescent capabilities, only two lanthanoid ions, Eu3+ and Tb3+, have intense visible luminescence in red and green, respectively. These two ions are the ones that are most frequently used

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

• Ioana Marica,
• Fran Nekvapil,
• Maria Ștefan,
• Cosmin Farcău and
• Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

• a long time. It was assumed that zinc vacancies, oxygen vacancies, and other defects are candidates for recombination centres involved in the visible luminescence [78]. Studies concerning the green luminescence of ZnO in the past few years assumed that the oxygen vacancies are the most likely

• candidates for recombination centres involved in the visible luminescence of ZnO [77][79]. Thus, the electrical and luminescence characteristics of zinc oxide could be changed by the number of oxygen vacancies or other point defects (vacancies, atom substitutions, and interstitial atoms). Moreover

High-yield synthesis of silver nanowires for transparent conducting PET films

• Gul Naz,
• Hafsa Asghar,
• Muhammad Ramzan,
• Muhammad Arshad,
• Rashid Ahmed,
• Muhammad Bilal Tahir,
• Bakhtiar Ul Haq,
• Nadeem Baig and
• Junaid Jalil

Beilstein J. Nanotechnol. 2021, 12, 624–632, doi:10.3762/bjnano.12.51

• optoelectronics. Keywords: silver nanowires; high yield; visible luminescence; PET film; transmittance; sheet resistance; Introduction Several optoelectronic devices, such as solar cells, touch screens, LC displays, organic EL panels, light-emitting diodes, and organic light emitting diodes, use transparent

Sub-wavelength waveguide properties of 1D and surface-functionalized SnO₂ nanostructures of various morphologies

• Venkataramana Bonu,
• Binaya Kumar Sahu,
• Arindam Das,
• Sankarakumar Amirthapandian,
• Sandip Dhara and
• Harish C. Barshilia

Beilstein J. Nanotechnol. 2019, 10, 379–388, doi:10.3762/bjnano.10.37

• belt-shaped NWs. Visible luminescence in SnO2 NWs was observed and attributed to the transitions between shallow donor states to an acceptor level, which is nearly ≈1 eV above the valence band. FESEM images of the (a) square-shaped NWs grown at 950 °C, (b) cylindrical- shaped NWs grown at 1000 °C

Room-temperature single-photon emitters in titanium dioxide optical defects

• Kelvin Chung,
• Yu H. Leung,
• Chap H. To,
• Aleksandra B. Djurišić and
• Snjezana Tomljenovic-Hanic

Beilstein J. Nanotechnol. 2018, 9, 1085–1094, doi:10.3762/bjnano.9.100

• again, works on defects in TiO2 have been scarce. While some works have associated visible luminescence with specific defects [67], the obtained emission spectra are very broad, covering the entire visible spectral range. At this stage, we cannot attribute a particular defect to the three bands observed

Tunable white light emission by variation of composition and defects of electrospun Al₂O₃–SiO₂ nanofibers

• Jinyuan Zhou,
• Gengzhi Sun,
• Hao Zhao,
• Xiaojun Pan,
• Zhenxing Zhang,
• Yujun Fu,
• Yanzhe Mao and
• Erqing Xie

Beilstein J. Nanotechnol. 2015, 6, 313–320, doi:10.3762/bjnano.6.29

• assigned to OH-related radiative emission centers formed in the samples [11]. Additionally, Yoldas also showed that the A12O3–SiO2 composites respond to UV light by emission of strong, visible luminescence (400–700 nm), which is due to the (≡Si–O¨O–Si≡) radiative centers [17]. Chen et al. reported a peapod