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| 1 | Ultrafast lasers—reliable tools for advanced materials processing显示文摘The unique characteristics of ultrafast lasers,such as picosecond and femtosecond lasers,have opened up new avenues in materials processing that employ ultrashort pulse widths and extremely high peak intensities.Thus,ultrafast lasers are currently used widely for both fundamental research and practical applications.This review describes the characteristics of ultrafast laser processing and the recent advancements and applications of both surface and volume processing.Surface processing includes micromachining,microand nanostructuring,and nanoablation,while volume processing includes two-photon polymerization and three-dimensional(3D)processing within transparent materials.Commercial and industrial applications of ultrafast laser processing are also introduced,and a summary of the technology with future outlooks are also given. | Koji Sugioka Ya Cheng | 2014 | Light(Science & Applications)2014，3，1： | 69 |
| 2 | Hierarchical microstructures with high spatial frequency laser induced periodic surface structures possessing different orientations created by femtosecond laser ablation of silicon in liquids显示文摘High spatial frequency laser induced periodic surface structures(HSFLs)on silicon substrates are often developed on flat surfaces at low fluences near ablation threshold of 0.1 J/cm2,seldom on microstructures or microgrooves at relatively higher fluences above 1 J/cm^2.This work aims to enrich the variety of HSFLs-containing hierarchical microstructures,by femtosecond laser(pulse duration:457 fs,wavelength:1045 nm,and repetition rate:100 kHz)in liquids(water and acetone)at laser fluence of 1.7 J/cm^2.The period of Si-HSFLs in the range of 110–200 nm is independent of the scanning speeds(0.1,0.5,1 and 2 mm/s),line intervals(5,15 and 20μm)of scanning lines and scanning directions(perpendicular or parallel to light polarization direction).It is interestingly found that besides normal HSFLs whose orientations are perpendicular to the direction of light polarization,both clockwise or anticlockwise randomly tilted HSFLs with a maximal deviation angle of 50°as compared to those of normal HSFLSs are found on the microstructures with height gradients.Raman spectra and SEM characterization jointly clarify that surface melting and nanocapillary waves play important roles in the formation of Si-HSFLs.The fact that no HSFLs are produced by laser ablation in air indicates that moderate melting facilitated with ultrafast liquid cooling is beneficial for the formation of HSFLs by LALs.On the basis of our findings and previous reports,a synergistic formation mechanism for HSFLs at high fluence was proposed and discussed,including thermal melting with the concomitance of ultrafast cooling in liquids,transformation of the molten layers into ripples and nanotips by surface plasmon polaritons(SPP)and second-harmonic generation(SHG),and modulation of Si-HSFLs direction by both nanocapillary waves and the localized electric field coming from the excited large Si particles. | Dongshi Zhang Koji Sugioka | 2019 | Opto-Electronic Advances2019，2，3： | 17 |
| 3 | In-channel integration of designable microoptical devices using flat scaffold-supported femtosecond-laser microfabrication for coupling-free optofluidic cell counting显示文摘The high-precision integration of three-dimensional(3D)microoptical components into microfluidics in a customizable manner is crucial for optical sensing,fluorescence analysis,and cell detection in optofluidic applications;however,it remains challenging for current microfabrication technologies.This paper reports the in-channel integration of flexible two-dimensional(2D)and 3D polymer microoptical devices into glass microfluidics by developing a novel technique:flat scaffold-supported hybrid femtosecond laser microfabrication(FSS-HFLM).The scaffold with an optimal thickness of 1–5 μm is fabricated on the lower internal surface of a microfluidic channel to improve the integration of high-precision microoptical devices on the scaffold by eliminating any undulated internal channel surface caused by wet etching.As a proof of demonstration,two types of typical microoptical devices,namely,2D Fresnel zone plates(FZPs)and 3D refractive microlens arrays(MLAs),are integrated.These devices exhibit multicolor focal spots,elongated(>three times)focal length and imaging of the characters‘RIKEN’in a liquid channel.The resulting optofluidic chips are further used for coupling-free white-light cell counting with a success rate as high as 93%.An optofluidic system with two MLAs and a W-filter is also designed and fabricated for more advanced cell filtering/counting applications. | Dong Wu Jian Xu Li-Gang Niu Si-Zhu Wu Katsumi Midorikawa Koji Sugioka | 2015 | Light(Science & Applications)2015，4，1： | 16 |
| 4 | Underwater persistent bubble-assisted femtosecond laser ablation for hierarchical micro/nanostructuring显示文摘In this study,we demonstrate a technique termed underwater persistent bubble assisted femtosecond laser ablation in liquids(UPB-fs-LAL)that can greatly expand the boundaries of surface micro/nanostructuring through laser ablation because of its capability to create concentric circular macrostructures with millimeter-scale tails on silicon substrates.Long-tailed macrostructures are composed of layered fan-shaped(central angles of 45°–141°)hierarchical micro/nanostructures,which are produced by fan-shaped beams refracted at the mobile bubble interface(.50°light tilt,referred to as the vertical incident direction)during UPB-fs-LAL line-by-line scanning.Marangoni flow generated during UPB-fs-LAL induces bubble movements.Fast scanning(e.g.1mms−1)allows a long bubble movement(as long as 2mm),while slow scanning(e.g.0.1mms−1)prevents bubble movements.When persistent bubbles grow considerably(e.g.hundreds of microns in diameter)due to incubation effects,they become sticky and can cause both gas-phase and liquidphase laser ablation in the central and peripheral regions of the persistent bubbles.This generates low/high/ultrahigh spatial frequency laser-induced periodic surface structures(LSFLs/HSFLs/UHSFLs)with periods of 550–900,100–200,40–100 nm,which produce complex hierarchical surface structures.A period of 40 nm,less than 1/25th of the laser wavelength(1030 nm),is the finest laser-induced periodic surface structures(LIPSS)ever created on silicon.The NIR-MIR reflectance/transmittance of fan-shaped hierarchical structures obtained by UPB-fs-LAL at a small line interval(5μm versus 10μm)is extremely low,due to both their extremely high light trapping capacity and absorbance characteristics,which are results of the structures’additional layers and much finer HSFLs.In the absence of persistent bubbles,only grooves covered with HSFLs with periods larger than 100 nm are produced,illustrating the unique attenuation abilities of laser properties(e.g.repetition rate,energy,incident angle,etc)by persistent bubbles with different curvatures.This research represents a straightforward and cost-effective approach to diversifying the achievable hierarchical micro/nanostructures for a multitude of applications. | Dongshi Zhang Bikas Ranjan Takuo Tanaka Koji Sugioka | 2020 | International Journal of Extreme Manufacturing2020，2，1： | 11 |
| 5 | Femtosecond laser shockwave peening ablation in liquids for hierarchical micro/nanostructuring of brittle silicon and its biological application显示文摘This paper presents a new technique,termed femtosecond laser shock peening ablation in liquids(fs-LSPAL),which can realize simultaneous crack micro/nanomanufacturing and hierarchical micro/nanolaser ablation,giving rise to the formation of diverse multiscale hierarchical structures,such as macroporous ratcheted structures and enéchelon microfringes decorated with parabolic nanoripples.Through analysis of surface morphologies,many phenomena have been confirmed to take place during fs-LSPAL,including enéchelon cracks,nanostriation,ripple densification,crack branching,and selective formation of high spatial frequency laser-induced periodic surface structures of 100–200 nm in period.At a high laser power of 700 mW,fs-LSPAL at scanning speeds of 0.2 mm s^-1 and 1 mm s^-1 enables the generation of height-fluctuated and height-homogeneous hierarchical structures,respectively.The height-fluctuated structures can be used to induce‘colony’aggregates of embryonic EB3 stem cells.At 200 mW,fs-LSPAL at 1 mm s^-1 is capable of producing homogeneous tilt macroporous structures with cracked structures interleaved among them,which are the synergistic effects of bubble-induced light refraction/reflection ablation and cracks.As shown in this paper,the conventional laser ablation technique integrated with its self-driven unconventional cracking under extreme conditions expands the horizons of extreme manufacturing and offers more opportunities for complex surface structuring,which can potentially be used for biological applications. | Dongshi Zhang Liang-Chun Wu Masashi Ueki Yoshihiro Ito Koji Sugioka | 2020 | International Journal of Extreme Manufacturing2020，2，4： | 7 |
| 6 | fFabrication of three-dimensional proteinaceous micro- and nano-structures by femtosecond laser cross-linking显示文摘 | Daniela Serien Koji Sugioka | 2018 | Opto-Electronic Advances2018，1，4： | 5 |
| 7 | Hybrid femtosecond laser three-dimensional micro-and nanoprocessing:a review显示文摘The extremely high peak intensity associated with ultrashort pulse width of femtosecond(fs)lasers enabled inducing nonlinear multiphoton absorption in materials that are transparent to the laser wavelength.More importantly,focusing the fs laser beam inside the transparent materials confined the nonlinear interaction to within the focal volume only,realizing three-dimensional(3D)micro/nanofabrication.This 3D capability offers three different processing schemes for use in fabrication:undeformative,subtractive,and additive.Furthermore,a hybrid approach of different schemes can create much more complex 3D structures and thereby promises to enhance the functionality of the structures created.Thus,hybrid fs laser 3D microprocessing opens a new door for material processing.This paper comprehensively reviews different types of hybrid fs laser 3D micro/nanoprocessing for diverse applications including fabrication of functional micro/nanodevices. | Koji Sugioka | 2019 | International Journal of Extreme Manufacturing2019，1，1： | 4 |
| 8 | Surgery and chemotherapy for intrahepatic cholangiocarcinoma显示文摘Cholangiocarcinoma, arising from bile duct epithelium, is categorized into intrahepatic cholangiocarcinoma (ICC) and extrahepatic cholangiocarcinoma (ECC), including hilarcholangiocarcinoma. Recently, there has been a worldwide increase in the incidence and mortality from ICC. Complete surgical resection is the only approach to cure the patients with ICC. However, locoregional extension of these tumors is usually advanced with intrahepatic and lymph-node metastases at the time of diagnosis. Resectability rates are quite low and variable (18%-70%). The five-year survival rate after surgical resection was reported to be 20%-40%. Median survival time after ICC resection was 12-37.4 mo. Only a small number of ICC cases, accompanied with ECC, gall bladder carcinoma, and ampullary carcinoma, have been reported in the studies of chemotherapy due to the rarity of the disease. However, in some reports, significant anti-cancer effects were achieved with a response rate of up to 40% and a median survival ofone year. Although recurrence rate after hepatectomy is high for the patients with ICC, the residual liver and the lung are the main sites of recurrence after tentative curative surgical resection. Several patients in our study had a long-term survival with repeated surgery and chemotherapy. Repeated surgery, combined with new effective regimens of chemotherapy, could benef it the survival of ICC patients. | Zenichi Morise Atsushi Sugioka Takamasa Tokoro Yoshinao Tanahashi Yasuhiro Okabe Tadashi Kagawa Chinatsu Takeura | 2010 | World Journal of Hepatology2010，2，2： | 4 |
| 9 | Recent Advances in the Fabrication of Highly Sensitive Surface-Enhanced Raman Scattering Substrates:Nanomolar to Attomolar Level Sensing显示文摘Surface-enhanced Raman scattering(SERS)techniques have rapidly advanced over the last two decades,permitting multidisciplinary trace analyses and the potential detection of single molecules.This paper provides a comprehensive review of recent progress in strategies for the fabrication of highly sensitive SERS substrates,as a means of achieving sensing on the attomolar scale.The review examines widely used performance criteria,such as enhancement factors.In addition,femtosecond laser-based techniques are discussed as a versatile tool for the fabrication of SERS substrates.Several approaches for enhancing the performance of SERS sensing devices are also introduced,including photo-induced,transient,and liquid-interface assisted strategies.Finally,substrates for real-time sensing and biological applications are also reviewed to demonstrate the powerful analytical capabilities of these methods and the significant progress in SERS research. | Shi Bai Koji Sugioka | 2021 | Light(Advanced Manufacturing)2021，2，2： | 4 |
| 10 | Evaluation of the Risk of Instrumentation as a Foreign Body in Spinal Tuberculosis: Clinical and Biologic Study显示文摘 | Masayoshi Oga Takeshi Arizono Mituhiro Takasita Yoichi Sugioka | 1993 | Spine1993，，13： | 3 |
| 11 | Laparoscopic total gastrectomy with distal pancreatosplenectomy and D2 lymphadenectomy for advanced gastric cancer显示文摘 | Ichiro Uyama Atsushi Sugioka Junko Fujita Yoshiyuki Komori Hideo Matsui Akitake Hasumi | 1999 | Gastric Cancer1999，，4： | 3 |
| 12 | Liquid vortexes and flows induced by femtosecond laser ablation in liquid governing formation of circular and crisscross LIPSS显示文摘Orientations of laser induced periodic surface structures(LIPSS)are usually considered to be governed by the laser polarization state.In this work,we unveil that fluid dynamics induced by femtosecond(fs)laser ablation in liquid(fs-LAL)can easily break this polarization restriction to produce irregular circular-LIPSS(CLIPPS)and crisscross-LIPSS(CCLIPSS).Fs laser ablation of silicon in water shows formation of diverse LIPSS depending on ablation conditions.At a high power of 700 mW(repetition rate of 100 kHz,pulse duration of 457 fs and wavelength of 1045 nm),single/twin CLIPSS are produced at the bottom of macropores of several microns in diameter due to the formation of strong liquid vortexes and occurrence of the vortex shedding effect.Theoretical simulations validate our speculation about the formation of liquid vortex with an ultrahigh static pressure,which can induce the microstructure trenches and cracks at the sidewalls for fs-LAL of Si and tungsten(W)in water,respectively.At a low power of 50 mW,weak liquid vortexes are produced,which only give birth to curved LIPSS in the valleys of grooves.Consequently,it is deduced that liquid vortex plays a crucial role in the formation of macropores.Mountain-like microstructures induce complex fluid dynamics which can cause the formation of CCLIPSS on them.It is believed that liquid vortexes and fluid dynamics presented in this work open up new possibilities to diversify the morphologies of LIPSS formed by fs-LAL. | Dongshi Zhang Xinzhuo Li Yao Fu Qinghe Yao Zhuguo Li Koji Sugioka | 2022 | Opto-Electronic Advances2022，5，2： | 2 |
| 13 | Laparoscopic D2 lymph node dissection for advanced gastric cancer located in the middle or lower third portion of the stomach显示文摘 | Ichiro Uyama Atsushi Sugioka Hideo Matsui Junko Fujita Yoshiyuki Komori Akitake Hasumi | 2000 | Gastric Cancer2000，，1： | 2 |
| 14 | The use of autologous blood in the surgical treatment of spinal disorders 显示文摘 | Oga M Ikuta H Sugioka Y | 1992 | Spine1992，17，13： | 1 |
| 15 | Laparoscopic local gastrectomy with distal pancreatosplenectomy and D2 lymph adenectomy for advanced gastric cancer 显示文摘 | Uyama I Sugioka Matsui H | 1999 | Gastric Cancer1999，2，3： | 1 |
| 16 | Laparoscopic total gastrectomy with distal pancreatosplenectomy and D2 lymphadenectomy for advanced gastric cancer显示文摘 | Uyama I Sugioka A Fujita J | 1999 | Gastric Cancer1999，2，： | 1 |
| 17 | Aluminum compoundsenhance lipid peroxidation in liposomes:insight intocellular damage caused by oxidative stress显示文摘 | Kaneko N Sugioka T Sakurai H | 2007 | J InorgBiochem2007，101，6： | 1 |
| 18 | Abiocompatible interface for the geometrical guidance of central neurons in vitro显示文摘 | MASTSUZAWA M KAZUTOSHI K SUGIOKA K | 1998 | J Colloid and Interface Sci1998，202，： | 1 |
| 19 | New hydrodesulfurization catalysts: noble metals supported on USY zeolite 显示文摘 | Sugioka M Sado F Matsumoto Y | 1996 | Catal Today1996，29，： | 1 |
| 20 | Influence of alcohol intake,cigarette smoking,and occupational status on idiopathic osteonecrosis of the femoral head显示文摘 | Matsuo K Hirohata T Sugioka Y | | 0，，09： | 1 |
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