Article
Chemistry, Multidisciplinary
Michael Erkelenz, Richard Kosinski, Oliver Sritharan, Helene Giesler, Barbara Sacca, Sebastian Schlucker
Summary: In this study, bare gold nanocubes and nanospheres of different sizes were incorporated into a rationally designed 3D DNA origami box. The encapsulated particles exhibit a gold surface that can be functionalized for specific applications in molecular plasmonics such as SERS or SEF.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jue Yin, Mo Xie, Junke Wang, Meirong Cui, Dan Zhu, Shao Su, Chunhai Fan, Jie Chao, Qian Li, Lianhui Wang
Summary: In this work, the authors report a simple and versatile one-pot strategy to fabricate DNA architectures with the assistance of spherical gold nanoparticles modified with thiolated oligonucleotide strands. The desired architectures are formed via the stochastic co-assembly of different modules.
Article
Chemistry, Multidisciplinary
Taixing Tan, Shun Zhang, Jie Wang, Yuqin Zheng, Haopeng Lai, Jialiang Liu, Fengqi Qin, Cheng Wang
Summary: The study on stacking fault structure (SFT) in Ag nanoplates revealed three basic stacking faults and their various combinations, providing insights into the anisotropic growth mechanism along the 2D direction. The generation of different lateral faces through SFT formation in Ag nanoplates leads to the anisotropic growth along the 2D direction.
Article
Nanoscience & Nanotechnology
Shuo Yang, Wenyan Liu, Yuwei Zhang, Risheng Wang
Summary: In this study, a new strategy utilizing DNA origami tiles and cation-controlled surface diffusion was employed to assemble gold nanorods into 1D and 2D arrays, with a novel pattern transfer method introduced for further manipulation. The results demonstrate the potential application of this approach in constructing complex superstructures with high yield and minor structural damage.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Viktorija Glembockyte, Lennart Grabenhorst, Kateryna Trofymchuk, Philip Tinnefeld
Summary: Enhancing fluorescence in the near-field of metal nanostructures through plasmonic effects has great potential, but challenges remain in placing single quantum emitters in nanoscale plasmonic hotspots. Over the past decade, breakthroughs have been made in studying DNA origami nanoantennas using the unique positioning ability of DNA nanotechnology.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Gongguo Zhang, Yanyun Ma, Wenjun Zhao, Yiqun Zheng
Summary: Seeded growth of gold nanoplates resulted in distinct morphologies resembling a lotus leaf and a donut, depending on the presence of Ag+ ions. The formed Au nano-lotus leaves showed absorbance in the near-infrared region and enhanced chemical activities in electrochemical measurements. This synthesis strategy could potentially be expanded to other noble metals and alloys.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Andreas Peil, Pengfei Zhan, Xiaoyang Duan, Roman Krahne, Denis Garoli, Luis M. Liz-Marzan, Na Liu
Summary: In this study, a transformable plasmonic helix system is demonstrated, where multiple gold nanoparticles (AuNPs) can be directly transported to target positions using DNA swingarms, resulting in tailored optical responses.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Huan Ge, Donglei Yang, Yimeng Li, Yongji Wei, Xinyuan Zhu, Pengfei Wang, Chuan Zhang
Summary: In this study, a reconfigurable nanophotonic heterostructure was constructed by integrating an upconversion nanoparticle (UCNP) and a gold nanorod (AuNR) on a DNA origami switch (DOS) template. The UCNP exhibited unique anti-Stokes luminescence in the near-infrared (NIR) region and could be excited by 980 laser light to generate visible light emission. The construction of this nanophotonic heterostructure expands the applications of DNA origami-based nanophotonic systems and holds potential in optical biosensing and imaging.
Article
Chemistry, Multidisciplinary
Zhiwei Li, Jian Zhang, Jianbo Jin, Fan Yang, Rashed Aleisa, Yadong Yin
Summary: This study demonstrates the creation of surface concavity in Au nanorods through seed-mediated growth in confined spaces and their thermochromic responses to temperature changes. By templating against Fe3O4 nanorods, a unique surface concavity is created, allowing precise tuning of the nanorods' plasmonic properties through aging in different solvents.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Johannes M. Parikka, Heini Jarvinen, Karolina Sokolowska, Visa Ruokolainen, Nemanja Markesevic, Ashwin K. Natarajan, Maija Vihinen-Ranta, Anton Kuzyk, Kosti Tapio, J. Jussi Toppari
Summary: Bottom-up methods using molecules like DNA have gained attention for the fabrication of complex nanostructures due to their low cost, high resolution, and simplicity in the third dimension. In this study, plus-shaped Seeman tile (ST) origami formed elongated 2D lattices and rolled into 3D tubes under specific ionic conditions. Imaging and further studies revealed ribbon-like structures with single or double layers of the origami lattice. The assembly process of these 3D DNA origami tubes was found to be heavily dependent on the concentration of mono- and divalent cations, with nickel acting as a trigger for tubular formation in solution.
Article
Chemistry, Multidisciplinary
Yuxiang Dong, Jiliang Liu, Xuanzhao Lu, Jialin Duan, Liqi Zhou, Lizhi Dai, Min Ji, Ningning Ma, Yong Wang, Peng Wang, Jun-Jie Zhu, Qianhao Min, Oleg Gang, Ye Tian
Summary: Self-assembly processes are important for fabricating complexly organized nanomaterials, but often limited in creating structures with multiscale order. In this study, a two-stage assembly strategy is introduced to successfully form complexly organized nanoparticle crystals.
Article
Chemistry, Multidisciplinary
Ningning Ma, Lizhi Dai, Zhi Chen, Min Ji, Yong Wang, Ye Tian
Summary: The incorporation of rigid DNA rods into a DNA origami assembly system has led to the development of a cocrystallization pathway, allowing for mutually ordered bridging on a three-dimensional scale.
Article
Chemistry, Multidisciplinary
Grant A. Knappe, Eike-Christian Wamhoff, Benjamin J. Read, Darrell J. Irvine, Mark Bathe
Summary: Researchers have developed a versatile DNA origami functionalization and characterization platform for biomedical applications. By utilizing click chemistry, they achieved quantitative in situ conversion of various moieties. This platform allows for broader access to covalently functionalized DNA origami.
Article
Chemistry, Physical
Sui Mao, Jingyun Liu, Zhijun Zhu, Laurence A. Belfiore
Summary: In this study, the formation of nanoholes on quartz with the assistance of Cu nanoparticles was investigated. The evidence of Cu-Si alloy formation suggests that substrate decomposition can play a crucial role in nanohole fabrication.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Hue Do Thi, Lien Nghien Thi Ha, Ha Chu Viet
Summary: This method presents a successful seeded growth approach using formaldehyde as a reductant, which enables the preparation of uniform, smooth spherical gold nanoparticles with narrow size distributions in an aqueous solution without any stabilizer. Through multi-step seeding growth, the sizes of the gold nanoparticles can be precisely controlled.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Juanmei Duan, Phanish Chava, Mahdi Ghorbani-Asl, YangFan Lu, Denise Erb, Liang Hu, Ahmad Echresh, Lars Rebohle, Artur Erbe, Arkady Krasheninnikov, Manfred Helm, Yu-Jia Zeng, Shengqiang Zhou, Slawomir Prucnal
Summary: This study presents a high-performance and self-powered photodetector based on a MoSe2/FePS3 type-II n-p heterojunction. The photodetector operates at room temperature under zero bias and ambient conditions, exhibiting a wide working range and superior responsivity and quantum efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Mao Wang, Ye Yu, Slawomir Prucnal, Yonder Berencen, Mohd Saif Shaikh, Lars Rebohle, Muhammad Bilal Khan, Vitaly Zviagin, Rene Hubner, Alexej Pashkin, Artur Erbe, Yordan M. Georgiev, Marius Grundmann, Manfred Helm, Robert Kirchner, Shengqiang Zhou
Summary: The occurrence of mid-infrared localized surface plasmon resonances (LSPR) in thin Si films hyperdoped with tellurium (Te) is demonstrated in this study. By fabricating two-dimensional arrays of micrometer-sized antennas in a Te-hyperdoped Si chip, the mid-infrared LSPR can be further enhanced and extended to the far-infrared range. This finding opens up the possibility of integrating plasmonic sensors with the on-chip CMOS platform, greatly advancing the mass manufacturing potential of high-performance plasmonic sensing systems.
Article
Multidisciplinary Sciences
Vera M. Kissling, Giordano Reginato, Eliana Bianco, Kristina Kasaciunaite, Janny Tilma, Gea Cereghetti, Natalie Schindler, Sung Sik Lee, Raphael Guerois, Brian Luke, Ralf Seidel, Petr Cejka, Matthias Peter
Summary: This study reveals the oligomerization mechanism of the Mre11-Rad50 complex and its functional significance in DNA damage repair. The results show that Rad50 mediates the oligomerization of the Mre11-Rad50 complex, and its mutations may be linked to hereditary cancer predisposition.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
Michael Hollenbach, Nagesh S. Jagtap, Ciaran Fowley, Juan Baratech, Veronica Guardia-Arce, Ulrich Kentsch, Anna Eichler-Volf, Nikolay V. Abrosimov, Artur Erbe, ChaeHo Shin, Hakseong Kim, Manfred Helm, Woo Lee, Georgy V. Astakhov, Yonder Berencen
Summary: This study successfully integrates a group of telecom photon emitters in a two-dimensional array of silicon nanopillars and discovers a waveguiding effect and higher brightness along individual pillars. These results provide a clear pathway for monolithic integration of single-photon emitters in quantum photonic circuits.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Juliette Bucci, Patrick Irmisch, Erica Del Grosso, Ralf Seidel, Francesco Ricci
Summary: In this study, a strategy for programmable delayed onset of toehold-mediated DNA strand displacement reactions (SDRs) is demonstrated. The strategy involves the use of blocker strands to inhibit strand displacement initially, followed by enzymatic degradation of the blocker strand to enable SDR. The kinetics of the blocker enzymatic degradation controls the timing of SDR initiation. The strategy is versatile and can be orthogonally controlled by different enzymes targeting specific blocker strands.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Himani Arora, Zahra Fekri, Yagnika Nandlal Vekariya, Phanish Chava, Kenji Watanabe, Takashi Taniguchi, Manfred Helm, Artur Erbe
Summary: In this study, a fully-encapsulated BP-based field-effect transistor (FET) scheme is employed using a lithography-free via-encapsulation method. The electrical properties of the via-encapsulated BP FETs are found to be significantly improved compared to unencapsulated devices. The results demonstrate that the via-contacting scheme leads to superior performance in terms of higher mobility, lower hysteresis, and long-term ambient stability in BP FETs.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Olha Aftenieva, Julius Brunner, Mohammad Adnan, Swagato Sarkar, Andreas Fery, Yana Vaynzof, Tobias A. F. Koenig
Summary: We use a simple grating configuration to direct and amplify the omnidirectional emission of perovskite nanocrystals. By using a soft lithographic printing process, we can reliably structure perovskite nanocrystals into light-emitting metasurfaces with high contrast on a large area. Our self-assembly process allows for scalable fabrication of gratings with predefined periodicities and tunable optical properties.
Article
Multidisciplinary Sciences
Marius Rutkauskas, Inga Songailiene, Patrick Irmisch, Felix E. Kemmerich, Tomas Sinkunas, Virginijus Siksnys, Ralf Seidel
Summary: In this study, the target recognition dynamics of the Cascade surveillance complex on a set of mismatched DNA targets were analyzed in detail using single-molecule supercoiling experiments. The observed dynamics were found to be quantitatively modeled as a random walk over the length of the crRNA-DNA hybrid, providing an important basis for quantitative off-target predictions. The study also revealed that the seed length for target recognition initiation is controlled by DNA supercoiling rather than the Cascade structure.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Olha Aftenieva, Markas Sudzius, Anatol Prudnikau, Mohammad Adnan, Swagato Sarkar, Vladimir Lesnyak, Karl Leo, Andreas Fery, Tobias A. F. Koenig
Summary: Miniaturized laser sources with low threshold power can be achieved by using photostable core/shell nanocrystals as gain material and directly patterning them as distributed feedback (DFB) lasers. The subwavelength pattern resolution required for DFB lasers is achieved through soft lithography based on template-assisted colloidal self-assembly. The combination with the directional Langmuir-Blodgett arrangement allows for control of the waveguide layer thickness.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Anik Kumar Ghosh, Swagato Sarkar, Takuya Tsuda, Soosang Chae, Andre Knapp, Mirko Nitschke, Amit Das, Sven Wiessner, Tobias A. F. Koenig, Andreas Fery
Summary: Metal-semiconductor nanostructures are widely used in photodetection, photocatalysis, and photovoltaics. In photodetection, the resistance typically decreases with the generation of charge carriers upon illumination, but an opposite response, an increase in resistance, is observed in interconnected metal-semiconductor gratings. This study presents a fabrication method using wrinkle structuring and oblique angle material deposition to create photoresistors with large-area periodic structures and cracks that serve as connections for two-point contact measurements. It is also found that an additional deposition of an amorphous titania layer further enhances the current reduction on photoexcitation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Andriy Horechyy, Olha Aftenieva, Mona Mittal, Sunita Sanwaria, Rajiv K. Srivastava, Tobias A. F. Koenig, Andreas Fery, Sajan Singh, Labeesh Kumar, Bhanu Nandan
Summary: In this study, well-defined core-satellite nanostructures consisting of block copolymer micelles with a single gold nanoparticle in the core and multiple photoluminescent cadmium selenide quantum dots attached to the micelle's coronal chains were fabricated and characterized. The use of different alcoholic solvents during the development of these nanostructures allowed for solvent-selective swelling, which tuned the distance between the quantum dots and gold nanoparticles and modulated their Förster resonance energy transfer behavior. These core-satellite nanostructures hold promising potential in photonics, optoelectronics, and sensors that utilize the Förster resonance energy transfer process.
Article
Polymer Science
Muskan Kularia, Olha Aftenieva, Swagato Sarkar, Anja M. Steiner, Vaibhav Gupta, Andreas Fery, Joby Joseph, Markus A. Schmidt, Tobias A. F. Koenig
Summary: Due to low losses, optical fibers are excellent waveguides, but manipulating the wavefront below the diffraction limit while keeping fabrication costs down is a challenge. We present a coating method using gold nanoparticles to achieve plasmonic gratings on rough surfaces, enabling the fabrication of low-cost fiber-based sensors with low optical losses.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Ahmad Echresh, Slawomir Prucnal, Zichao Li, Rene Huebner, Fabian Ganss, Oliver Steuer, Florian Baerwolf, Shima Jazavandi Ghamsari, Manfred Helm, Shengqiang Zhou, Artur Erbe, Lars Rebohle, Yordan M. Georgiev
Summary: Accurate control of doping and fabrication of metal contacts on n-type germanium nanowires (GeNWs) remain challenging in germanium-based nanoelectronics. This study presents a combined approach involving phosphorus implantation, flash lamp annealing, electron beam lithography, reactive ion etching, and nickel deposition to fabricate Ohmic contacts on n-type doped GeNWs. The resulting devices showed linear Ohmic behavior in current-voltage measurements, and the electrical characteristics were found to be affected by carrier scattering and reduction of the effective NW cross-section.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Vaibhav Gupta, Olha Aftenieva, Patrick T. Probst, Swagato Sarkar, Anja M. Steiner, Nicolas Vogel, Andreas Fery, Tobias A. F. Koenig
Summary: This study focuses on the rational design and dispersion engineering of plasmonic colloid gratings for refractive index sensing. A 1D colloidal plasmonic lattice composed of nanoparticle dimer chains is fabricated using interference lithography, soft molding, and colloidal self-assembly. The lattice exhibits special out-of-plane lattice resonance (OPLR) under oblique illumination with transverse magnetic polarization, leading to enhanced sensitivity. Experimental results show narrow spectral linewidth and high-quality factor for these resonances compared to single particles. The study also demonstrates the potential application of this platform in asymmetric refractive index environments using a glycerol-water mixture as a model system.
ADVANCED PHOTONICS RESEARCH
(2022)
