Review of Scientific Instruments最新文献_第2页

Rapid depth estimation based on a key electrowetting liquid-lens with electrically adjusted imaging focus. 基于电调成像焦键式电润湿液体透镜的快速深度估计。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0225689

Chunyu Zhang, Yuxiang Xu, Xinyu Zhang

{"title":"Rapid depth estimation based on a key electrowetting liquid-lens with electrically adjusted imaging focus.","authors":"Chunyu Zhang, Yuxiang Xu, Xinyu Zhang","doi":"10.1063/5.0225689","DOIUrl":"https://doi.org/10.1063/5.0225689","url":null,"abstract":"An effective method for rapidly performing depth estimation using a type of electrowetting liquid-lens is proposed. The liquid-lens is architectured by directly coupling a cylindrical copper sidewall electrode and a top ITO electrode, leading to a dual-mode lens adjusted electrically, including a beam diverging mode and a beam converging mode, and also an intermedium phase retard state. By increasing the applied signal voltage from 0 to 120 V, the focus of the liquid-lens presents a wide dynamic range of (-∞, -128.6 mm) ∪ (45.6 mm, +∞). The key performances of the liquid-lens, such as the focus tunable electrically and an element response duration of less than 5 ms, are evaluated experimentally. By sweeping the signal voltage applied over the liquid-lens coupled with an arrayed CMOS sensor to form an imaging setup, a sequence of images leading to a focal stack is acquired. Considering the dual-mode character of the liquid-lens, the depth of field of the imaging equipment mainly based on the liquid-lens can be remarkably extended by further utilizing the phase retard effect in the transition region between the positive and negative focus. A rapid algorithm for aligning the focal stack and then eliminating the scene parallax is also achieved.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144014880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolytic carbon membranes enabling novel low-energy photon sources. 热解碳膜实现新型低能光子源。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0240264

Michael Bachmann, Felix Düsberg, Simon Edler, Natsuki Miyakawa, Andreas Schels, Andreas Pahlke, Florian Herdl, Georg S Duesberg, Maximilian Kueddelsmann, Erik Bunert, Max Kaschytza, Stefan Zimmermann

引用次数: 0

Square wave linear transformer driver based on the Blumlein-type pulse forming network and pseudospark switch. 基于blumlein型脉冲形成网络和伪火花开关的方波线性变压器驱动器。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0259175

Qi Yuan, Shengyu Tang, Weidong Ding, Kunhao Yu, Guoxiang Sun, Shaohao Nie, Haorui Xue, Yuchen Cheng, Penghui Li

{"title":"Square wave linear transformer driver based on the Blumlein-type pulse forming network and pseudospark switch.","authors":"Qi Yuan, Shengyu Tang, Weidong Ding, Kunhao Yu, Guoxiang Sun, Shaohao Nie, Haorui Xue, Yuchen Cheng, Penghui Li","doi":"10.1063/5.0259175","DOIUrl":"https://doi.org/10.1063/5.0259175","url":null,"abstract":"High-voltage square-wave pulses have significant potential in fields such as high power microwave and flash photography. It puts forward higher requirements on the pulse generator: fast front, flat-top, and a miniaturized, compact structure. To address these challenges, this paper presents a square-wave formation approach based on the combination of three advanced technologies: the multichannel pseudospark switch (MCPSS), which offers fast conduction, high power, and high frequency; the Blumlein-type pulse forming network (BPFN), known for its high voltage transfer efficiency, long electrical length, and ease of parameter adjustment; and the linear transformer driver (LTD), which features a modular structure and fast front. A single-stage LTD module is developed, and the waveform modulation techniques are discussed. Single-gap MCPSS, unequal-capacitance BPFN, and a magnetic switch are utilized to optimize output waveform. A square wave pulse with a voltage of 25.0 kV, a tf of 24.9 ns, a full width at half maximum of 94.3 ns, and a flat-top bottom width (tbw) of 77.8 ns (90% Umax ∼ 90% Umax) is achieved on a matched resistive load.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigations of optical aberration on quantum diamond microscopy toward high spatial resolution and sensitivity. 面向高空间分辨率和高灵敏度的量子金刚石显微镜光学像差研究。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0204566

Shunsuke Nishimura, Moeta Tsukamoto, Kento Sasaki, Kensuke Kobayashi

{"title":"Investigations of optical aberration on quantum diamond microscopy toward high spatial resolution and sensitivity.","authors":"Shunsuke Nishimura, Moeta Tsukamoto, Kento Sasaki, Kensuke Kobayashi","doi":"10.1063/5.0204566","DOIUrl":"https://doi.org/10.1063/5.0204566","url":null,"abstract":"Quantum diamond microscopy (QDM), which employs nitrogen-vacancy (NV) center ensembles, is a promising approach to quantitatively imaging magnetic fields with both high resolution that approaches the diffraction limit and a wide field of view. The commonly adopted setups of QDM capture the photoluminescence through transparent diamonds, which inevitably entail aberrations-optical errors that degrade the optical resolution and contrast of the obtainable image. In this study, we delve into the impact of optical aberrations, focusing on their dependence on diamond thickness. We first introduce a rigorous model [B. Richards et al., Proc. R. Soc. London, Ser. A 253, 358-379 (1959) and J. Braat et al., J. Opt. Soc. Am. A 20, 2281-2292 (2003)] of diffraction that incorporates aberrations, producing the NV center optical image. We confirm that this model accurately reproduces the confocal images of single NV centers obtained at various depths in diamonds. Extending this model to a wide-field microscope, we find that the model also accurately reproduces the USAF 1951 resolution test chart obtained through diamonds of various thicknesses. Based on these investigations, we quantitatively assess the consequent resolution constraints and propose thinning the diamond as a viable solution. We present a robust method to quantitatively ascertain resolution in optical systems influenced by aberrations caused by ray transmission through diamonds. For instance, for a typical microscope with an objective lens of NA = 0.7, the diffraction limit is achievable through diamonds that are 30 μm thick, and a resolution of 1 μm is obtained through diamonds that are 100 μm thick. Those results open up avenues for enhanced performance in QDM.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144079904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active stabilization of laser diode injection using a polarization-spectroscopy technique. 利用偏振光谱技术实现激光二极管注入的主动稳定。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0249681

Luka Milanovic, Greg Ferrero, Robin Oswald, Thomas Kinder, Julian Schmidt, Cornelius Hempel

引用次数: 0

Electrical conductivity measurements of aqueous fluids under crustal conditions in multi-anvil apparatus. 多砧仪器中地壳条件下含水流体的电导率测量。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0231628

Jinyan Wu, Haiying Hu, Lidong Dai, Ziming Hu, Song Luo

{"title":"Electrical conductivity measurements of aqueous fluids under crustal conditions in multi-anvil apparatus.","authors":"Jinyan Wu, Haiying Hu, Lidong Dai, Ziming Hu, Song Luo","doi":"10.1063/5.0231628","DOIUrl":"https://doi.org/10.1063/5.0231628","url":null,"abstract":"The electrical conductivity of aqueous fluids is critical for interpreting the electrical anomalies observed by magnetotellurics in the Earth's crust. Conductivity measurements of fluids at high temperature and pressure were mainly conducted in cold-sealed pressure vessels, hydrothermal diamond anvil cells, and piston-cylinder apparatus, by using precious metals, such as Pt-Rh or Au-Pd as sample capsules. However, this research has never been performed in a multi-anvil apparatus. In addition, metal capsules employed in previous studies were costly and difficult to manufacture mechanically in the laboratory. In this study, we designed a novel, economical, chemical inertness, and tractable sample capsule made of polytetrafluoroethylene (PTFE), and by using this capsule, we successfully measured the conductivity of NaCl solutions in a multi-anvil apparatus under conditions of 323-598 K and 0.5-1.0 GPa. Our results are consistent with those from diamond anvil cells and piston-cylinder apparatus. Besides being used in conductivity measurement, the new and low-cost method has potential applications for investigating other physicochemical properties, such as rock-water interactions and fluid sound velocity under shallow crustal conditions. Furthermore, higher temperature and pressure can be realized by replacing the PTFE components with metallic materials, enabling more extensive exploration of fluid behavior in the Earth's deep interior.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143981055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Zero kinetic energy spectroscopy of photofragment based on ion velocity map imaging. 基于离子速度图成像的光片零动能谱。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0260546

Gaoming Hu, Youqing Li, Hongxiang Lu, Zhenzhen Li, Yang Chen, Dongfeng Zhao

{"title":"Zero kinetic energy spectroscopy of photofragment based on ion velocity map imaging.","authors":"Gaoming Hu, Youqing Li, Hongxiang Lu, Zhenzhen Li, Yang Chen, Dongfeng Zhao","doi":"10.1063/5.0260546","DOIUrl":"https://doi.org/10.1063/5.0260546","url":null,"abstract":"We present the Zero Kinetic Energy spectroscopy of photoFragment (ZKEF) to determine the dissociation energy and product quantum state distributions in unimolecular photodissociation dynamics involving significant internal state excitation of photofragments. This method is based on the ion velocity map imaging (VMI) technique, by recording the photofragment signals with nearly zero kinetic energy as a function of photoexcitation energy, and thus benefits from the highest achievable energy resolution of VMI. The ZKEF spectrum directly relates to the internal energy levels of photofragments and the difference between the photoexcitation energy and the dissociation energy. Application experiments using ZKEF on the photodissociation dynamics of KrO2+ have yielded a determination of the dissociation energy of D0(Kr - O2+) = 0.222 eV, with an unprecedented accuracy of ∼1 meV. Based on this parameter, the rotational state distributions of photofragmented O2 have also been determined, demonstrating the potentials of ZKEF for high resolution characterization of photofragment quantum state distributions in photodissociation reactions.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144021483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact in situ probe for magnetotransport measurements of 2D materials under variable tensile strain. 用于测量可变拉伸应变下二维材料磁输运的紧凑原位探头。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0254677

Bai Yang Wang, Xin Wei, Yijun Yu, Aviv Simchony, Harold Y Hwang

{"title":"Compact in situ probe for magnetotransport measurements of 2D materials under variable tensile strain.","authors":"Bai Yang Wang, Xin Wei, Yijun Yu, Aviv Simchony, Harold Y Hwang","doi":"10.1063/5.0254677","DOIUrl":"https://doi.org/10.1063/5.0254677","url":null,"abstract":"The recent development of freestanding oxide membranes has opened new opportunities for strain engineering of transition metal oxides beyond values accessible in bulk samples. While a number of studies have been performed with fixed strain, the ability to dynamically control the strain state during measurement would be greatly enabling. To this end, we present an in situ uniaxial strain probe optimized for transport measurements of tensile-strained 2D or quasi-2D materials down to 2 K. Utilizing a flexible polyimide substrate as the stress transfer medium, our platform simplifies the sample preparation process and allows precise alignment of strain fields relative to the crystalline axes. An in situ optical microscope monitors the macroscopic strain state operando and makes it possible to complete an entire magnetotransport study at cryogenic temperatures under continuous strain variations. We demonstrate the capabilities of the probe on a freestanding LaNiO3 membrane, where we induce tensile strain up to 8% and observe a corresponding strong transport anisotropy. In view of the rapid developments in low-dimensional materials synthesis and the plethora of novel quantum phenomena they exhibit, this strain probe provides general instrumentation for examining and controlling these properties via strain.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143981392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vacuum chamber for deposition of gradient thin films: Toward high-throughput structure-property correlative studies. 梯度薄膜沉积的真空室：迈向高通量结构-性能相关研究。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0251290

Dmitry Lapkin, Roody Nasro, Jakub Hagara, Bernd Hofferberth, Alexander Hinderhofer, Alexander Gerlach, Frank Schreiber

{"title":"Vacuum chamber for deposition of gradient thin films: Toward high-throughput structure-property correlative studies.","authors":"Dmitry Lapkin, Roody Nasro, Jakub Hagara, Bernd Hofferberth, Alexander Hinderhofer, Alexander Gerlach, Frank Schreiber","doi":"10.1063/5.0251290","DOIUrl":"https://doi.org/10.1063/5.0251290","url":null,"abstract":"The advancement of materials science and application in complex multi-component systems is increasingly dependent on high-throughput studies that can efficiently explore the vast compositional space of materials. However, traditional sample preparation methods often struggle to keep pace with modern characterization techniques and data analysis capabilities. To address this challenge, we present a vacuum deposition chamber designed to produce gradient thin films. This chamber enables the deposition of single-component films with thickness gradients or multi-component films with continuous compositional gradients in a single experimental run. Our approach features a custom-designed moving shutter mechanism, which allows precise control over the deposition process and eliminates the need for multiple samples with discrete compositions. This significantly reduces research time and minimizes inconsistencies associated with the production of several individual samples. As a proof of concept, we deposited single-component gradient films of pentacene and diindenoperylene, which are widely studied in thin films for organic optoelectronic applications, and their corresponding binary gradient film. X-ray reflectivity measurements confirm the linear thickness gradients in the former and the linear compositional gradient in the latter samples.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 5","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144014924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trapezoidal toothed log-periodic UHF antenna for partial discharge detection. 用于局部放电检测的梯形齿状对数周期超高频天线。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-05-01 DOI: 10.1063/5.0267600

Chen Chen, Yutong Zhang, Mengwei Zhang, Chenbin Jin, Peng Liu, Qingyu Wang, Zongren Peng

引用次数: 0