News & Events

On May 31, "How to accurately measure pore size?" held by the Magnetic Resonance Laboratory of Tsinghua University Analysis Center. The lecture series was officially opened, and Xia Pan, General Manager of State Instrument Precision Measurement, shared the report of "Key points of accurate determination of material pore size and analysis of testing examples", and nearly 60 researchers in related fields attended and exchanged in-depth exchanges offline and online.   Off-line venue of the seminar          Prof. Yang Haijun pointed out that the pore structure of materials directly affects the performance of materials, and the precise measurement of material pore size is widely used in many disciplines and industries. The lecture series will focus on the theme of "How to accurately measure pores" and invite experts in related fields to continue to share different methods of pore analysis.      Prof. Yang Haijun, Department of Chemistry, Tsinghua University          Xia Pan from CIQTEK said in his report that the principle of low-temperature nitrogen adsorption for specific surface area and pore size analysis is a commonly used test method in the international arena, with mature theoretical support and perfect standard guidance. In the actual testing process, the testing requirements are different for different types of materials and different pore size ranges. Combining with a variety of gas adsorption analysis instruments independently developed by CIQTEK, he explained in his report the analysis and testing for different types of ultramicroporous, microporous and mesoporous. In particular, he shared in detail about the pore size analysis of ultra-microporous and microporous materials, which are increasingly widely used, from the selection of instruments to the setting of parameters in the testing process, the selection of models for test data analysis and the interpretation of test results, especially the pore size analysis of ultra-microporous materials with pore size less than 0.7 nm.     CIQTEK General Manager Xia Pan          Recently, the  EASY-V 1440, a high-performance microporous analyzer, was officially delivered to Tsinghua University Analysis Center. Xia Pan introduced that this instrument focuses on the surface characterization of microporous materials. Based on the stainless steel pipeline, the device has a breakthrough design of VCR metal surface sealed sample tube, which improves the overall sealing during the flow of gas pipeline and has the advantages of long time vacuum retention, ultra-low partial pressure ratio, constant temperature control and multiple fluxes. It can be widely used in environmental protection, fuel cell, pharmaceutical and catalytic industries, and is especially suitable for researchers who have higher requirements for microporous and ultra-microporous analysis. After the presentation, Mr. Yang and Mr. X...

We are pleased to announce that the CIQTEK EPR spectroscopy has contributed to over 100 high-level research publications! (The list is shown below in Section #2) Section 1. One of the Selected Results    Vanadium-Catalyzed Dinitrogen Reduction to Ammonia via a [V]═NNH2 Intermediate.Journal of the American Chemical Society (2023) Wenshuang Huang, Ling-Ya Peng, Jiayu Zhang, Chenrui Liu, Guoyong Song, Ji-Hu Su, Wei-Hai Fang, Ganglong Cui, and Shaowei Hu   Abstract The Earth's atmosphere is rich in N2 (78%), but the activation and conversion of nitrogen have been challenging due to its chemical inertness. The ammonia industry uses high-temperature and high-pressure conditions to convert N2 and H2 to NH3 on the surface of solid catalysts. Under ambient conditions, certain microorganisms can bind and convert N2 to NH3 via Fe(Mo/V)-based nitrogen fixation enzymes. Although great progress has been made in the structure and intermediates of nitrogen fixation enzymes, the nature of N2 binding to the active site and the detailed mechanism of N2 reduction remains uncertain. Various studies on the activation of N2 with transition metal complexes have been carried out to better understand the reaction mechanism and to develop catalysts for ammonia synthesis under mild conditions. However, the catalytic conversion of N2 to NH3 by transition metal complexes remains challenging. Despite the crucial role of vanadium in biological nitrogen fixation, few well-defined vanadium complexes can catalyze the conversion of N2 to NH3. In particular, the V(NxHy) intermediates obtained from the proton/electron transfer reactions of ligated N2 remain unknown. Herein, this paper reports the vanadium metal complex-catalyzed reduction of nitrogen to ammonia and the first isolation and characterization of a neutral hydrazide complex intermediate ([V]=NNH2) from a nitrogen-activated system, with the cyclic conversion process simulated by the reduction of the protonated vanadium amino complex ([V]-NH2) to obtain a dinitrogen compound and release of ammonia. These findings provide unprecedented insights into the mechanism of N2 reduction associated with FeV nitrogen-fixing enzymes by combining theoretical calculations to elucidate the possible conversion of nitrogen to ammonia via the distal pathway in this catalytic system.   The group of Prof. Dr. Shaowei Hu at Beijing Normal University is dedicated to the development of transition metal complexes for the activation of inert small molecules. Recently, in collaboration with Prof. Dr. Ganglong Cui's group, we reported the reduction of nitrogen to ammonia catalyzed by vanadium metal complexes through a combination of theoretical calculations and experimental studies. The results of this study were published in the Journal of the American Chemical Society, and Wenshang Huang (M.S. student) and Lingya Peng (Ph. D. student) were the co-first authors of t...

On January 18, CIQTEK annual year-end party 2023 was successfully held. The main venue in Hefei and all the CIQTEK team in the five sub-venues across China reviewed the exciting 2022 and looked forward to the new 2023.         ↓ Watch the video to check the highlights of CIQTEK Annual Year-end Party 2023 ↓    Looking back on 2022, CIQTEK CEO Dr. Yu He presented a series of bright results and detailed case studies. He said, "Helping customers achieve value" is our reason for existence, and "helping peers achieve value" is our fundamental approach.   In 2022, CIQTEK released the Diamond Microscope, a precision measurement instrument, the SEM3300, which redefines the tungsten filament scanning electron microscope, and the new gas adsorption series, which leads the industry benchmark, and other high-end scientific instruments.   In 2022, CIQTEK's measurement and control products were delivered to over 500 customers, and the application center measured samples for customers more than 8,000 times. Meanwhile, It successfully held the first "Science and Technology Festival", "CIQTEK Forum" and other innovative activities.   In 2022, CIQTEK won the first batch of the National Innovation Base of Metrology Culture and Science Education, the first prize in the Science and Technology Progress Award of Anhui Province, and the first prize of the Postdoctoral Research Station of Anhui Province, and other 16 qualification awards.   In 2023, we will be fearless and going forward! In 2023, we will live up to every choice and bring good products, good service, and a good platform to every fellow traveler!    

On January 4, Wu Jinsong and other experts from Anhui Provincial Department of Science and Technology visited CIQTEK, and CIQTEK CEO Dr. Yu He welcomed them warmly.  Dr. Yu He introduced the company to the visiting experts at the CIQTEK exhibition hall   In the CIQTEK exhibition hall, Dr. Yu He introduced the development of the company and its self-developed core instruments and equipment such as the Scanning NV Microscope (SNVM), atomic magnetometer, scanning electron microscope, electron paramagnetic resonance spectrometer, and measurement control series products, specific surface and pore size analyzer.   In the subsequent symposium, Dr. He Yu listed the latest progress of some of CIQTEK's major research projects and made suggestions for the development of technology scientific instruments, scenario applications, and talent needs.   The expert delegation of the provincial science and technology department expressed recognition of CIQTEK's achievements and also said that the provincial science and technology department will focus on the concerns of enterprises, keep an eye on their needs, do a good job of service work, and provide strong support for the prosperous development of industry in Anhui Province.   High-end scientific instruments are the cornerstone of science and technology innovation and the first station for the transformation of scientific research results. CIQTEK will adhere to the original intention, continue to make efforts in the key core technology, continuously improve the development and application of high-end scientific instruments, and contribute to the technology development.  

Manufacturing is the mainstay of the real economy, and the importance of manufacturing is being emphasized globally. Scanning electron microscope (SEM) as a powerful analytical instrument, will have a great role in improving manufacturing product innovation and product quality.   However, in practice, there are often concerns that the SEM is easily damaged, complicated to use, and takes a long time to get started, resulting in high hidden costs.   CIQTEK SEM R&D team to address this pain point, with the goal of "everyone can use" to create an "easy but not simple" tungsten filament SEM2000.  CIQTEK tungsten filament scanning electron microscope SEM2000     Easy But Not Simple   SEM2000 operation interface is simple, easy to get started, durable, low failure rate and even beginners can easily use it. SEM2000's high degree of automation, key imaging, automatic focus, automatic dispersion, and automatic contrast function, greatly simplify the steps of debugging parameters. SEM2000 has a complete anti-collision process, which can completely avoid the sample from touching the objective lens polar shoe, secondary electronic detector, and other parts.   Below are pictures taken by a beginner using SEM2000 after a short training period. Clear image, good contrast, and a large depth of field.      If you want to reduce the cost of use and increase the efficiency of operation.If you have never used an electron microscope before and want to try SEM for the first time.If you want the tool to be simpler.Then SEM2000 will be your best choice!     

Tungsten filament Scanning Electron Microscopy (SEM) is cost-effective, easy to maintain, relatively simple to operate, and requires less space, making it easy to use by the general public. However, for a long time, the resolution of tungsten filament SEM has been at a standstill, making it difficult to achieve the user's pursuit of higher resolution.   CIQTEK recently introduced the SEM3300, a tungsten filament scanning electron microscope that has successfully increased its 20 kV resolution to 2.5 nm, a 16% improvement over ordinary tungsten filament electron microscopes!3 kV resolution of 4 nm, a 2-fold improvement!1 kV resolution of 5 nm, a 3-fold improvement!  It redefines the industry standard of tungsten filament scanning electron microscopy by significantly outperforming ordinary tungsten filament electron microscopy in all voltage bands!   CIQTEK SEM3300   The following three pictures are real pictures of standard gold particles at different voltages, each particle size is around 300nm, with sharp edges, rich details, and distinct heights.    Images of standard gold particles at different voltages taken with SEM3300    It is well known that the diaphragm material in lithium batteries has poor electrical conductivity and tiny pores, and a low-voltage, high-resolution field emission electron microscope must be used to capture better images. Figure a shows the effect of conventional tungsten filament SEM, the details are blurred and unclear. SEM3300 accomplishes this difficult task effortlessly, the septum pores are clearly visible at 1 kV, and the edges of the pores are sharp enough for septum inspection (Figure b).    Figure a: Lithium battery septum photographed by conventional tungsten filament SEM, with blurred and unclear details    Figure b: SEM3300 photographed lithium battery diaphragm, diaphragm pores clearly visible, the sharp edge of the hole     How the CIQTEK SEM3300 is redefining tungsten filament SEM?   The CIQTEK SEM R&D team analyzed the main factors limiting the resolution of tungsten filament SEM: The tungsten filament emission structure is a 3-electrode structure with a cathode, gate, and anode. At low acceleration voltage, the filament brightness will be significantly reduced by the space charge effect and electron source aberration. At low landing energy, the chromatic and diffraction aberrations caused by energy dispersion are large, resulting in a large beam spot. In order to ensure the collection efficiency of the lateral secondary electron detector, the working distance is relatively large and the objective magnification is not large enough.   In response to these problems, CIQTEK added a 10 kV high voltage tube from the anode directly to the objective lens pole shoe inside the mirror barrel, which we figuratively call a high voltage tunnel. Here is an example of 1 kV landing energy.     At the upper end of the high-volta...

Recently, China Central Television (CCTV) News interviewed and reported on CIQTEK's scanning electron microscope.     "This is a commercial tungsten filament scanning electron microscope with a resolution of 2.5 nm (CIQTEK Tungsten Filament Scanning Electron Microscope SEM3300), which was just released at the end of November."    Image source: CCTV NEWS   CIQTEK Tungsten Filament Scanning Electron Microscope SEM3300   "In order to be able to move the key core technology from the laboratory to various industries and achieve mass production, a precision measurement technology as the core of the scientific instrumentation industrialization base - Science Instrument Valley (CIQTEK Headquarters Base) is stepping up construction. "   Image source: CCTV NEWS    Image source: CCTV NEWS

Recently, CIQTEK was invited by Xinhua News Agency to record a video interview on "Exploring Precision Measurement". CIQTEK is very honored and happy to have this opportunity to spread this technology and information to the public.      In the interview, Frank Chen, Overseas Business Development Manager, CIQTEK, demonstrated and introduced the self-developed precision measurement instruments such as the Scanning NV Microscope (SNVM) and Electron Paramagnetic Resonance (EPR or ESR) spectrometer.   The following is from Xinhua News Agency (or check the news here):  "A precision measurement instrument called Scanning NV Microscope can achieve nanoscale high spatial resolution and single spin ultra-high detection sensitivity. Explore more about it with a Bangladeshi PhD student in China's Anhui.   Produced by Xinhua Global Service "