Article
Engineering, Electrical & Electronic
Kyojiro Morikawa, Po-yin Chen, Hai Linh Tran, Yutaka Kazoe, Chihchen Chen, Takehiko Kitamori
Summary: Channel fabrication technology is essential for microfluidic and nanofluidic devices. Glass channels are attractive due to their stability, transparency, and ease of modification. This study developed a microchannel fabrication method with high etching selectivity and smooth surface.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Article
Optics
Youwang Hu, Yalong Wang, Xianshan Dong, Xiang Xi, Chao Long, Haoning Zheng, Yao Wang, Xiaoyan Sun, Ji'an Duan
Summary: With the development of technology, fused silica has been widely used in various industrial fields. This paper proposes a method that combines femtosecond laser modification processing and chemical etching technology to cut fused silica. The processing parameters of femtosecond laser modification are explored, and high-quality cutting of millimeter-thick fused silica is achieved.
Article
Optics
Xiaolong Li, Jian Xu, Aodong Zhang, Huaiyu Peng, Jie Zhang, Yucen Li, Ming Hu, Zijie Lin, Yunpeng Song, Wei Chu, Zhenhua Wang, Ya Cheng
Summary: Utilizing a combination of femtosecond laser-assisted chemical etching, electroless plating, and mechanical polishing, a technique has been proposed for fabricating embedded metallic microheaters, microheater arrays, and microthermal sensors. This technique enables uniform and controllable temperature distributions, flexible manipulation of localized temperature, and precise calibration of microheaters. The integration of microheaters also allows for precise control of temperature in glass channels and acceleration of chemical reactions in microfluidics, showing potential for developing multifunctional thermal-control microfluidic devices through laser manufacturing.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Gabriel Agnello, Cody Cushman, Andrew C. Antony, Nicholas Smith, Joy Banerjee, Hyun-hang Park, David Cabrera, Melanie Geiger, Cortney Simons, He Jing, Wanda Walczak
Summary: Acids have been commonly used to treat glass surfaces for functional advantage, but detailed studies on the subtle changes in glass surface properties after treatment are rare. This study investigated the intrinsic surface properties of an alkaline-earth boroaluminosilicate glass immediately after exposure to different chemical formulations. The results showed that the properties of the topmost surface of the treated glass are highly dependent on the type and strength of the formulation used.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Rajasimha Kurnoothala, Krishna Chaitanya Vishnubhatla, Shailesh Srivastava
Summary: By utilizing a novel femtosecond laser irradiation geometry and chemical etching with KOH, record lengths of truly rectangular buried microchannels in fused silica have been achieved in a relatively short period of time. This method offers an alternative to the hazardous HF based etching and results in microchannels with low surface roughness and excellent imaging capabilities.
Article
Materials Science, Multidisciplinary
Remo N. Widmer, David Bischof, Jakub Jurczyk, Markus Michler, Jakob Schwiedrzik, Johann Michler
Summary: Recent progress in manufacturing now allows for efficient fabrication of complex oxide-glass components at the micrometer- to sub-micrometer scale, benefiting both industry and fundamental research due to numerous applications of miniature glass parts. Research shows that fused silica micro-pillars fabricated by laser-assisted etching are almost ten times stronger than their bulk-sized counterparts.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Pawel Maniewski, Fredrik Laurell, Michael Fokine
Summary: This study presents the additive manufacturing of high-quality macroscopic fused silica glass structures, achieving high deposition rates and offering broad application potential. By using three co-axial nozzles to avoid the quill effect, homogeneous and crack-free printing was achieved using cluster-free sub-mu m powders and CO2 laser-induced melt pool. Laser post-processing was utilized to enhance surface quality.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Engineering, Electrical & Electronic
Changhong Wang, Youhuan Ning, Wenyue Ning, Guoxing Yi, Yan Huo
Summary: This paper proposes a cyclic chemical etching method to improve the surface morphology of hemispherical resonators, significantly improving the Q factor. The developed loss model can screen hemispherical resonators with different performances according to the change of the Q factor during the etching process, which is essential for bulk fabricating high-quality factor hemispherical resonators.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Optics
Simon Schwarz, Stefan Rung, Cemal Esen, Ralf Hellmann
Summary: Rectangular microchannels with vertical sidewalls in fused silica are fabricated using femtosecond laser backside ablation, allowing for control of channel depth and width through applied fluence and number of scans, with focal position adjustment enabling extension of channel depth. The flexibility of the direct writing process is demonstrated by ablating concentric rings.
Article
Optics
Yichi Han, Xiaocong Peng, Songlin Wan, Chaoyang Wei, Jianda Shao
Summary: In this article, a three-dimensional multi-physics thermomechanical model was developed to reveal the evolution mechanism of surface morphology and thermal stress formation during laser ablation. The simulated results were validated through experiments. This study contributes to a profound understanding of the laser ablation process and establishes a theoretical foundation for achieving high surface quality and non-thermal stress laser ablation.
Article
Materials Science, Multidisciplinary
Bo Li, Wenfeng Sun, Xia Xiang, Xiaolong Jiang, Wei Liao, Haijun Wang, Xiaodong Yuan, Xiaodong Jiang, Xiaotao Zu
Summary: A two-step physical-chemical etching method using large incident angle ion beam etching followed by HF etching is proposed to remove damage precursors in fused silica surface, resulting in good surface quality and enhanced laser damage resistance. The large incident angle ion beam etching removes metal impurities and subsurface defects, reducing the amount of subsequent HF etching and preventing the replication and expansion of subsurface defects. HF etching is then used to remove atomic-scale damaged layer and improve surface shape. Compared to single etching methods, the two-step etching method achieves better laser damage performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Peiqi Jiao, Qiang Xin, Bin Fan, Yongqian Wu, Xiang Wu
Summary: This study focuses on the nondestructive machining and surface/subsurface damage smoothing of optical components. By using atmospheric pressure plasma jet and Level Set Method simulation, the crack change during smoothing is analyzed. The results demonstrate that plasma jet processing can effectively smooth the subsurface damage of fused silica optical components, and the simulation verifies the dominant etching mechanism in handling cracks.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Xiang He, Chao Cai, Heng Zhao, Gang Wang, Liang Lv, Dingyao Yan, Ping Ma
Summary: Ion beam etching through physical sputtering is a promising method for improving the laser-induced damage threshold of fused silica optics, by partially removing surface scratches and reducing surface roughness. However, due to the lack of a sacrificial layer, it has much lower efficiency in removing surface structural defects, especially deep structural defects.
Article
Materials Science, Multidisciplinary
Ting Shao, Zhaohua Shi, Qingzhi Li, Weihua Li, Xin Ye, Laixi Sun, Liming Yang, Wanguo Zheng
Summary: A new method combining IBE and DCE is proposed to improve the laser-induced damage resistance of fused silica optics. The results show that the SSD layer can be tracelessly removed with IBE treatment, but secondary defects are introduced. DCE treatment effectively removes these defects and achieves high-quality surface.
Article
Chemistry, Multidisciplinary
Markus Mader, Leonhard Hambitzer, Phillip Schlautmann, Sophie Jenne, Christian Greiner, Florian Hirth, Dorothea Helmer, Frederik Kotz-Helmer, Bastian E. Rapp
Summary: This paper introduces a method of additive manufacturing of transparent fused silica using melt-extrusion and fused feedstock deposition, allowing previously inaccessible glass structures to be printed.
Article
Biology
Daniel A. Wagenaar
JOURNAL OF EXPERIMENTAL BIOLOGY
(2015)
Article
Neurosciences
Pieter Laurens Baljon, Daniel A. Wagenaar
JOURNAL OF NEUROSCIENCE
(2015)
Article
Neurosciences
John M. Nagarah, Annette Stowasser, Rell L. Parker, Hiroki Asari, Daniel A. Wagenaar
FRONTIERS IN NEUROSCIENCE
(2015)
Article
Biology
Andrew M. Lehmkuhl, Arunkumar Muthusamy, Daniel A. Wagenaar
JOURNAL OF EXPERIMENTAL BIOLOGY
(2018)
Article
Chemistry, Multidisciplinary
Ehsan Arbabi, Jiaqi Li, Romanus J. Hutchins, Seyedeh Mahsa Kamali, Amir Arbabi, Yu Horie, Pol Van Dorpe, Viviana Gradinaru, Daniel A. Wagenaar, Andrei Faraon
Article
Neurosciences
Sergii Romanenko, Peter H. Siegel, Daniel A. Wagenaar, Victor Pikov
JOURNAL OF NEUROPHYSIOLOGY
(2014)
Article
Biology
Annette Stowasser, Aaron Stahl, Joshua B. Benoit, Daniel A. Wagenaar
JOURNAL OF EXPERIMENTAL BIOLOGY
(2019)
Article
Multidisciplinary Sciences
Ann Kennedy, Prabhat S. Kunwar, Ling-yun Li, Stefanos Stagkourakis, Daniel A. Wagenaar, David J. Anderson
Article
Neurosciences
Jounhong Ryan Cho, Xinhong Chen, Anat Kahan, J. Elliott Robinson, Daniel A. Wagenaar, Viviana Gradinaru
Summary: The activity of dopamine neurons in the dorsal raphe nucleus plays an important role in recognizing motivationally salient events and adapting to them. The neurons show dynamic responses to reward-predicting cues and unexpected outcomes, with modulation by internal states and behavioral context. Overall, these results suggest that DRNDA neurons encode motivational salience, dependent on internal and external factors.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Biology
Maria Ashaber, Yusuke Tomina, Pegah Kassraian, Eric A. Bushong, William B. Kristan, Mark H. Ellisman, Daniel A. Wagenaar
Summary: In the medicinal leech, the dorsal excitor motor neuron DE-3 can play distinct dynamical roles in various behaviors, with important input synapses widely distributed over its branches, but functional clusters being different in different behaviors.
Article
Biochemical Research Methods
Yun He, Junhui Shi, Miguel A. Pleitez, Konstantin Maslov, Daniel A. Wagenaar, Lihong Wang
JOURNAL OF BIOMEDICAL OPTICS
(2020)
Article
Biology
Yusuke Tomina, Daniel A. Wagenaar
Review
Mathematical & Computational Biology
Daniel A. Wagenaar
SOURCE CODE FOR BIOLOGY AND MEDICINE
(2014)
Article
Cell Biology
Anat Kahan, Alon Greenbaum, Min J. Jang, J. Elliott Robinson, Jounhong Ryan Cho, Xinhong Chen, Pegah Kassraian, Daniel A. Wagenaar, Viviana Gradinaru
Summary: The LiGS method preserves tissue structure around implants and aids in investigating the interface between the optical implants and tissue, providing spatial information on optical fibers and GRIN lenses.
Article
Biology
Yusuke Tomina, Daniel A. Wagenaar