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| 1 | 飞秒激光诱导金属钨表面周期性自组织结构的研究显示文摘飞秒激光诱导金属表面周期性自组织微纳米条纹结构,在调控热辐射源、摩擦、超亲水性、超疏水性和打标等方面具有广泛的应用前景.研究了800nm飞秒激光诱导金属钨表面周期性自组织结构的形成规律和形成机理.采用Sipe干涉模型和有限时域差分法,仿真了第1个飞秒激光脉冲刻蚀后随机粗糙表面引起的激光电磁场能量表面分布和第20个脉冲后低空间频率条纹结构引起的激光电磁场能量表面分布.揭示了低空间频率条纹与高空间频率条纹的形成机理,考察了表面微观形貌的演化和条纹周期随着脉冲增多而递减的现象. | 李晨 程光华 Stoian Razvan | 2016 | 光学学报2016，36，5： | 10 |
| 2 | 飞秒激光光刻波导偏振器显示文摘飞秒激光诱导折射率变化提供了一种灵活的三维光子器件制作手段.飞秒激光光刻的II类波导具有偏振导光特性,可以作为波导偏振器,但是对于要保留的偏振分量损耗太大.本文阐述了一种利用飞秒激光在熔融石英中制作的新型低损耗波导偏振器.它由中间的一根I类波导及两侧的两根II类纳米光栅轨迹构成.基于飞秒激光诱导的纳米光栅的偏振依赖散射特性,II类纳米光栅轨迹能够对I类波导的倏逝场进行调制.偏振方向垂直于纳米光栅的模式相对于偏振方向平行于纳米光栅的模式有更大的散射损耗,因此导通的是偏振方向平行于纳米光栅的模式.研究了消光比随I类波导与II类纳米光栅轨迹之间的间距的变化关系,选择一个最佳间距来进一步研究消光比随II类纳米光栅轨迹长度的变化关系.在间距6μm,II类纳米光栅轨迹扫描长度6 mm处实现了最大15.91 dB的消光比.通过增加II类轨迹的长度或者数量,很容易得到更高的消光比. | 林灵 杨小君 白晶 龙学文 吕百达 Razvan Stoian 惠荣庆 程光华 | 2011 | 光子学报2011，40，6： | 8 |
| 3 | 超短脉冲激光诱导周期性表面结构(英文)显示文摘激光诱导周期性表面结构(Laser-induced periodic surface structures,LIPSS)具有纳米尺度的特征结构和自重复的微观尺度的排列图案,因此,LIPSS在传感器、太阳能发电、光催化等方面具有广泛的应用前景。本文首先介绍LIPSS形成过程中超快激光与物质相互作用的复杂过程,强调瞬态光学性质和表面结构变化的作用。然后综述几种具有代表性的LIPSS形成机理,并且讨论了各自的优缺点。接着介绍了LIPSS形成过程中材料的变化,主要包括材料化学成分、晶体结构和表面微观结构的变化。最后综述了LIPSS在材料表面处理、光学和机械等方面的应用。 | 李晨 STOIAN Razvan 程光华 | 2018 | 中国光学2018，11，1： | 8 |
| 4 | Influence of hepatitis viruses on clinico-pathological profiles and long-term outcome in patients undergoing surgery for hepatocellular carcinoma显示文摘BACKGROUND: The global risk of hepatocellular carcinoma(HCC) is largely due to hepatitis B virus (HBV) and hepatitis C virus (HCV) infections. In recent years, however, an increased prevalence of non-viral HCC has been noted. The clinical impact of the presence/absence of viral infections in HCC remains controversial. The present study aimed to assess the effect of hepatitis viruses on demographics, clinical and pathological features and long-term outcome in a large cohort of Romanian patients who underwent surgery for HCC. METHODS: The study included 404 patients with HCC who had undergone resection, transplantation or radiofrequency ablation at a single institution between 2001 and 2010. The patients were divided into four groups: 85 patients with hepatitis B virus infection (HBV group), 164 patients with hepatitis C virus infection (HCV group), 39 patients with hepatitis B and C virus co-infection (HBCV group), and 116 patients without viral infection (non-BC group). RESULTS: The patients of both HBV (56.0±11.3 years) and HBCV groups (56.0±9.9 years) were significantly younger than those of the HCV (61.0±8.5 years, P=0.001) and non-BC groups(61.0±13.0 years, P=0.002). Interestingly, the prevalence of liver cirrhosis was significantly lower in the non-BC group (47%)than in any other subsets (72%-90%, P<0.002). Furthermore, the non-BC patients were more advanced according to the Barcelona Clinic Liver Cancer stages than the patients of the HCV or HBCV groups (P<0.020); accordingly, they were more frequently assessed beyond the Milan criteria than any other groups (P=0.001). No significant differences in the disease-free or overall survival rates were observed among these groups. CONCLUSIONS: Patients with non-viral HCC are diagnosed at advanced ages and stages, a situation plausibly due to the poor effectiveness of cancer surveillance in community practice. The presence of viral infections does not appear to impair the longterm prognosis after surgical treatment in patients with HCC; however, there is a trend for worse disease-free survival rates in HBCV patients, though statistical significance was not reached. | Anna-Maria Tanase Traian Dumitrascu Simona Dima Razvan Grigorie Agnes Marchio Pascal Pineau Irinel Popescu | 2014 | Hepatobiliary & Pancreatic Diseases International2014，13，2： | 7 |
| 5 | Ultrashort Bessel beam photoinscription of Bragg grating waveguides and their application as temperature sensors显示文摘Ultrashort pulsed Bessel beams with intrinsic nondiffractive character and potential strong excitation confinement down to 100nm can show a series of advantages over Gaussian beams in fabricating efficient Bragg grating waveguides(BGWs).In this work, we focus on parameter management for the inscription of efficient BGWs using the point-by-point method employing Bessel beams.Due to their high aspect ratio, the resulting one-dimensional void-like structures can section the waveguides and interact efficiently with the optical modes. Effective first-order BGWs with low birefringence can then be fabricated in bulk fused silica. By controlling the size and the relative location of grating voids via the Bessel pulse energy and scan velocities, the resonant behaviors of BGWs can be well regulated.A high value of 34 dB for 8 mm length is achieved.A simple predictive model for BGWs is proposed for analyzing the influences of processing parameters on the performance of BGWs. The technique permits multiplexing several gratings in the same waveguide.Up to eight grating traces were straightforwarcliy inscribed into the waveguide in a parallel-serial combined mode, forming the multiplex BGWs.As an application, the multiplex BGW sensor with two resonant peaks is proposed and fabricated for improving the reliability of temperature detection. | Guodong Zhang Guanghua Cheng Manoj K.Bhuyan Ciro D'Amico Yishan Wang Razvan Stoian | 2019 | Photonics Research2019，7，7： | 6 |
| 6 | High-energy hybrid femtosecond laser system demonstrating 2×10 PW capability显示文摘We report on a two-arm hybrid high-power laser system(HPLS)able to deliver 2×10 PW femtosecond pulses,developed at the Bucharest-Magurele Extreme Light Infrastructure Nuclear Physics(ELI-NP)Facility.A hybrid frontend(FE)based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate(BBO)crystals,with a cross-polarized wave(XPW)filter in between,has been developed.It delivers 10 mJ laser pulses,at 10 Hz repetition rate,with more than 70 nm spectral bandwidth and high-intensity contrast,in the range of 1013:1.The high-energy Ti:sapphire amplifier stages of both arms were seeded from this common FE.The final high-energy amplifier,equipped with a 200 mm diameter Ti:sapphire crystal,has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers,at 1 pulse/min repetition rate.More than 300 J output pulse energy has been obtained by pumping with only 80%of the whole 600 J available pump energy.The compressor has a transmission efficiency of 74%and an output pulse duration of 22.7 fs was measured,thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond pulses.The reported results represent the cornerstone of the ELI-NP 2×10 PW femtosecond laser facility,devoted to fundamental and applied nuclear physics research. | François Lureau Guillaume Matras Olivier Chalus Christophe Derycke Thomas Morbieu Christophe Radier Olivier Casagrande Sébastien Laux Sandrine Ricaud Gilles Rey Alain Pellegrina Caroline Richard Laurent Boudjemaa Christophe Simon-Boisson Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Bertrand De Boisdeffre Petru Ghenuche Andrei Naziru Georgios Kolliopoulos Liviu Neagu Razvan Dabu Ioan Dancus Daniel Ursescu | 2020 | High Power Laser Science and Engineering2020，8，4： | 4 |
| 7 | 10 PW peak power femtosecond laser pulses at ELI-NP显示文摘We report on the generation and delivery of 10.2 PW peak power laser pulses,using the High Power Laser System at the Extreme Laser Infrastructure–Nuclear Physics facility.In this work we demonstrate for the first time,to the best of our knowledge,the compression and propagation of full energy,full aperture,laser pulses that reach a power level of more than 10 PW. | Christophe Radier Olivier Chalus Mathilde Charbonneau Shanjuhan Thambirajah Guillaume Deschamps Stephane David Julien Barbe Eric Etter Guillaume Matras Sandrine Ricaud Vincent Leroux Caroline Richard François Lureau Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Cristian Capiteanu Andrei Naziru Bogdan Diaconescu Vicentiu Iancu Razvan Dabu Daniel Ursescu Ioan Dancus Calin Alexandru Ur Kazuo ATanaka Nicolae Victor Zamfir | 2022 | High Power Laser Science and Engineering2022，10，3： | 2 |
| 8 | Adenomatous polyposis coli - mediated control of β - catenin is essential for both chondrogenic and osteogenic differentiation of skeletal precursors 显示文摘 | Razvan LM Marcel K Cathy A J | 2009 | BMC Der Biol2009，9，： | 1 |
| 9 | The Application of Infrared Spectroscopy to the Study of Atmospheric Rust Systems-I Standard Spectra and Illustrative Applications to Identify Rust Phases in Natural Atmospheric Corrosion Products 显示文摘 | Raman A Kuban B Razvan A | 1991 | Corros Sci1991，32，： | 1 |
| 10 | The Application of Infrared Spectroscopy to the study of Atmospheric Rust Systems 显示文摘 | A Raman B E Kuban A Razvan | 1991 | Corrosion Science1991，，12： | 1 |
| 11 | The protein kinase complement of the human genome显示文摘 | Gary L Johnson Razvan Lapadat | 2002 | Science2002，296，6： | 1 |
| 12 | Conventional fiberoptic flexible uretemscope versus fourth generation digital flexible ureteroseope:a critical comparison显示文摘 | Razvan M Bogdan G Dragos G et a1 | 2010 | Journal of Endoumlogy2010，21，1： | 1 |
| 13 | Bipolar Plasma Vaporization vs Monopolar and Bipolar TURP–A Prospective, Randomized, Long-term Comparison显示文摘 | Bogdan Geavlete Dragos Georgescu Razvan Multescu Florin Stanescu Marian Jecu Petrisor Geavlete | 2011 | Urology2011，，4： | 1 |
| 14 | The protein kinase complement of the human genome显示文摘 | Gary L Johnson Razvan Lapadat | 2002 | Science2002，296，6： | 1 |
| 15 | Deliberate external pancreatic fistula after pancreaticoduodenectomy performed in the setting of acute pancreatitis, and its internalization through fistula-jejunostomy显示文摘To the Editor:Many patients with tumors of the pancreatic head or of the ampulla of Vater require endoscopic manipulation of the duodenal papilla in order to achieve tumor biopsy or for common bile duct stenting.These interventional endoscopy approaches may lead to acute pancreatitis.The iatrogenic acute pancreatitis will influence the surgical strategy in patients scheduled for pancreaticoduodenectomy(PD).Due to the small number of cases,the surgical strategy in patients who require PD in the context of acute pancreatitis has not been standardized. | Sorin T Alexandrescu Andrei C Zlate Razvan T Grigorie Mihnea Ionescu Irinel Popescu | 2020 | Hepatobiliary & Pancreatic Diseases International2020，19，1： | 1 |
| 16 | Large-area back-contact back-junction solar cell with effi- ciency exceeding 21% 显示文摘 | GIUSEPPE G VALENTIN D RAZVAN R | 2013 | IEEE Journal of Photovol- taics2013，3，1： | 1 |
| 17 | Application of transmission line matrix method to antenna synthesis 显示文摘 | RAZVAN C NATHAN I | 2003 | IEEE Antennas and Progagation Society AP-S International Symposium2003，，3： | 1 |
| 18 | The application of infrared spectroscopy to the study of atmospheric rust systems 显示文摘 | Raman A Kuban B Razvan A | 1991 | Corros Sci1991，32，12： | 1 |
| 19 | Vibrational Spectroscopy of Highly Iron Doped B2O3-Bi2O3 Glass Systems显示文摘 | Lucian Baia Razvan Stefan Jurgen Popp | 2003 | Non-crystalline Solids2003，，324： | 1 |
| 20 | Conventional fi- beroptic flexible ureteroscope versus fourth generation digital flexible ureteroscope: a critical comparison显示文摘 | RAZVAN M BOGDAN G DRAGOS G | 2010 | J Endourol2010，21，1： | 1 |
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