Article
Chemistry, Multidisciplinary
Sihai Luo, Andrea Mancini, Rodrigo Berte, Bard H. Hoff, Stefan A. Maier, John C. de Mello
Summary: The reported technique allows for tuning the gap-width from more than 30 nm to less than 3 nm, enabling the fabrication of molecular rectifiers. It also describes a method for fabricating massively parallel nanogap arrays with nanometric size control over large areas, which exhibit strong plasmonic resonances and act as high-performance substrates for surface-enhanced Raman spectroscopy. These methods extend the range of metallic nanostructures that can be fabricated over large areas and have potential applications in molecular electronics, plasmonics, and biosensing.
ADVANCED MATERIALS
(2021)
Article
Optics
Rakesh Arul, David-Benjamin Grys, Rohit Chikkaraddy, Niclas S. Mueller, Angelos Xomalis, Ermanno Miele, Tijmen G. Euser, Jeremy J. Baumberg
Summary: This study demonstrates a self-assembled gold nanoparticle multilayer that supports tunable collective plasmon-polariton resonances in the visible and infrared spectrum. The structure exhibits high stability and efficient light coupling, making it suitable for nanoscale Raman and infrared sensing applications.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiaojun Song, Yueliang Wang, Yan Hao, Qingqing Zhu, Yanjuan Li, Lei Song, Zhaoxiang Deng
Summary: This study successfully built a series of homo/heterodimeric plasmonic nanomolecules with prescribed compositions using DNA-guided, solvo-driven Ag ion soldering method. Strong in-solution electric-dipole coupling was achieved for materials with strong (Au, Ag) or damped (Pt, Pd) plasmonic responses.
Article
Chemistry, Multidisciplinary
Wei Zhang, Bin Ai, Panpan Gu, Yuduo Guan, Zengyao Wang, Zifan Xiao, Gang Zhang
Summary: Sub-10 nm nanogaps with tailored chiroptical responses were fabricated between two nanocrescents through nanoskiving, breaking mirror symmetry with subsequent deposition. Strong plasmonic coupling excited in the gaps and at the tips lead to circular dichroism activity. The chiral nanogaps can recognize specific cysteine enantiomers and show potential in various chiral applications.
Article
Multidisciplinary Sciences
Nan Qin, Zhi-Gang Qian, Chengzhe Zhou, Xiao-Xia Xia, Tiger H. Tao
Summary: Electron beam lithography (EBL) is known for its fabrication resolution at deep nanometer scales, but its limitation in arbitrary 3D nanofabrication has been addressed by the authors through the development of voltage-regulated 3D EBL technique for manufacturing functional 3D nanostructures at sub-15 nm resolution.
NATURE COMMUNICATIONS
(2021)
Article
Optics
Dandan Han, Yayi Wei
Summary: This study presents a special hybrid plasmonic waveguide (HPW) patterning system that addresses issues such as non-uniformity and shallow pattern depth in plasmonic lithography. By exciting specific plasmonic waves and waveguide modes, the system improves the production of uniform periodic patterns with sub-20 nm features and high aspect ratio, and achieves high spatial frequency selection by controlling thickness and gap size.
Article
Engineering, Electrical & Electronic
Sang-Kon Kim
Summary: This paper discusses the use of BCP self-assembly and metal-deposition method to produce Au NP arrays with narrow gaps. Simulation results show that both the diameter of the cylinder post and gap size increase with the polymerization degree (N), while decrease with the increase of the Flory-Huggins interaction parameter x.
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS
(2021)
Article
Optics
Huaxin LI, Yatao Ren, Yang LI, Mingjian He, Baohai Gao, Hong Qi
Summary: This study investigates a sub-wavelength particle manipulation technique based on plasmonic optical tweezers, which utilizes local plasmonic resonance to generate strong gradient force for particle sorting. The results show that the sorting device can effectively sort particles of different diameters and refractive indices.
Article
Physics, Applied
Zhaohui Tang, Jun Zhao, Xiao Deng, Guangxu Xiao, Zhijun Yin, Yanqing Wu, Renzhong Tai, Xinbin Cheng, Tongbao Li
Summary: This paper proposes a 2D nanoscale reference grating manufactured by combining laser-focused atomic deposition (LFAD) and extreme ultraviolet interference lithography for performance verification and calibration of microscopes and 2D stages. The grating has a high precision and natural orthogonality.
APPLIED PHYSICS EXPRESS
(2023)
Article
Multidisciplinary Sciences
Zhiyuan Qu, Peng Zhou, Fanyi Min, Shengnan Chen, Mengmeng Guo, Zhandong Huang, Shiyang Ji, Yongli Yan, Xiaodong Yin, Hanqiu Jiang, Yubin Ke, Yong Sheng Zhao, Xuehai Yan, Yali Qiao, Yanlin Song
Summary: We propose a bubble-template molecular printing concept that utilizes ultrathin liquid films to confine the self-assembly of molecules, achieving high-precision assembly at the molecular scale.
Article
Nanoscience & Nanotechnology
Zhihao Wang, Jinping Chen, Tianjun Yu, Yi Zeng, Xudong Guo, Shuangqing Wang, Timothee Allenet, Michaela Vockenhuber, Yasin Ekinci, Guoqiang Yang, Yi Li
Summary: Nonchemically amplified resists based on polystyrene modified with triphenyl sulfonium triflate groups were prepared. The level of sulfonium groups could be controlled by changing the feed ratio of raw materials, resulting in two different resists with sulfonium ratios of 50% and 70%. The PSTS0.7 resist exhibited a better resolution (18 nm half-pitch) compared to the PSTS0.5 resist (20 nm half-pitch) under the same developing conditions for electron beam lithography.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Nikolaos Farmakidis, Jacob L. Swett, Nathan Youngblood, Xuan Li, Charalambos Evangeli, Samarth Aggarwal, Jan A. Mol, Harish Bhaskaran
Summary: Nanocalligraphy scanning probe lithography (nc-SPL) overcomes the limitations of conventional scanning probe lithography by achieving real-time adjustment of structures at the micron to nanometer scales, improving throughput, tip longevity, and reliability, and can be applied in both positive and negative tone patterning modes.
MICROSYSTEMS & NANOENGINEERING
(2021)
Review
Materials Science, Multidisciplinary
Mengmeng Guo, Zhiyuan Qu, Fanyi Min, Zheng Li, Yali Qiao, Yanlin Song
Summary: This review discusses unconventional techniques for sub-100 nm nanopatterning, including template-replica, template-induced, and template-free techniques. It also summarizes the unique properties of multi-dimensional nanostructures. Furthermore, the challenges and opportunities for large-scale patterning, device performance improvement, biocompatible multi-dimensional nanostructures, molecular-scale patterning, and carbon footprint requirements for future nanofabrication processes are discussed.
Article
Chemistry, Multidisciplinary
Yang Yang, Zhenyong Wu, Laurie Wang, Kaifeng Zhou, Kai Xia, Qiancheng Xiong, Longfei Liu, Zhao Zhang, Edwin R. Chapman, Yong Xiong, Thomas J. Melia, Erdem Karatekin, Hongzhou Gu, Chenxiang Lin
Summary: A new sorting technique using cholesterol-modified DNA is reported, which can separate liposomes into six to eight homogeneous populations. These uniform and leak-resistant liposomes are ideal for studying how membrane curvature affects membrane protein activities, benefiting research in membrane biology and the development of liposomal drug-delivery systems.
Article
Nanoscience & Nanotechnology
Yake Wang, Jinping Chen, Yi Zeng, Tianjun Yu, Shuangqing Wang, Xudong Guo, Rui Hu, Peng Tian, Michaela Vockenhuber, Dimitrios Kazazis, Yasin Ekinci, Yanqing Wu, Shumin Yang, Jun Zhao, Guoqiang Yang, Yi Li
Summary: In this study, a series of molecular resists based on a bis(4-butoxyphenyl) sulfone core attached to a varying number of radiation-sensitive triphenylsulfonium units were designed and synthesized. These resists showed high resolution and low line edge roughness in both e-beam and EUV lithography. The exposure mechanisms and outgassing behavior of the resists were investigated, and they exhibited high etch resistance and accurate pattern transfer capabilities. The results highlight the potential of these resists for practical applications in high-resolution lithography.
ACS APPLIED NANO MATERIALS
(2023)