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RHK Testimonials Overview

Don’t just take our word for it — here’s what our customers are saying about RHK

Customer success is the driving reason RHK has been in business since 1981. Everyday, in university and government labs around the globe, RHK research platforms lead to new discoveries in nanotechnology. RHK Technology brings over 25 years of experience to the design and manufacture of advanced UHV SPM instruments.  Explore with Confidence.

The real time demo of atomic scale imaging of a topological insulator surface at the APS March meeting, in that essentially street level setting with the cryogenic compressor running is simply awesome.
All these physicists walking by and taping on it did not make any difference… It is very impressive! Having worked with an STM for a couple of years, I can clearly appreciate the magnitude of this fantastic accomplishment by RHK Technologies. I am totally confident in our choice.... a custom built mK STM/c-AFM from RHK, to be delivered to us soon ….
Jagadeesh Moodera Senior Scientist and Group Leader - Physics Department, MIT
I was really impressed by your PanScan Freedom working so smoothly in the noisy environment of the AVS exhibit!
The stability was superb and I loved
immensely the closed circuit of He gas. This is so cool and so great at a time when getting liquid He is not an easy thing (not to speak of the cost). I wish I had money right now to buy one!
Professor Miquel Salmeron
I am amazed by the quality of images that your new PanScan Freedom SPM can deliver in a noisy exhibition room.
The cryo-free feature makes it much more affordable than conventional cryogenic SPMs. This new microscope should be a dream platform for many customers who have a small budget but a high passion for quality SPM work.
An-Ping Li Senior Research Scientist, ORNL
The topographic images that you obtained on the first day you received my In doped Bi2Se3 sample were equal in quality to the published results that we obtained using our commercial bath cryostat STM.
It is amazing that such results could be obtained with a closed-cycle cryostat.   That you could get equally good results with the system running just sitting on the floor in the exhibition hall during the AVS conference is nothing short of remarkable!  Your system is definitely on my wish list for a future purchase.
Professor Vidya Madhavan
My experience with RHK has been very positive.  Working directly with an RHK engineer, I was able to customize an STM system for the types of experiments that I want to conduct.
I appreciate the flexibility on the part of RHK to work within the constraints of my start-up budget, allowing me to begin my experiments with a state-of-the-art STM system with the ability to add capabilities (e.g. vacuum system, cryogenics, etc.) at a later time as funding becomes available.

Everyone at RHK has been extremely responsive to questions I have had spanning from questions about software functions, the ability to customize measurements, electronics, hardware, and inquiries for new
system components and upgrades.  I have and will continue to highly recommend RHK to other researchers looking to construct a high-quality STM system and who would like to work with a company which is very responsive to their questions and needs.
Michael C. Boyer Assistant Professor, Chair of Physics Graduate Admissions - Department of Physics, Clark University
My new PanScan Freedom is working great.
We were very happy with the performance of our original PanScan microscope with the flow cryostat,  but the cost of liquid helium prevented us from cooling to helium temperatures on a regular basis.   Now that we have upgraded to the closed-cycle version,  we can stay at the base temperature all the time.   This is much more productive for our research.   We were very happy that we did not need to make any changes to our existing STM or preparation chambers and the upgrade only took a few days.   I would recommend the PanScan Freedom to anyone who wants low noise and high stability STM measurements.
Dan Killelea Asst. Professor - Department of Chemistry & Biochemistry, Loyola University Chicago
We really appreciate the strong flexibility of the R9.
Our microscopes require very different driving signals. The R9 can support those requirements easily by simply reorganizing the IHL file. There are so many high voltage output ports. The most important is that all of those outputs are independent. Even for very complicated operation, it is very easy to be realized.
Dr. Haibiao Zhou University of Science and Technology of China
The R9 is a very powerful digital SPM controller.
Very easy to use. When acquiringspectroscopy, a lot of fl exibilities with a very precise adjustment of the tunneling junctions.
Dr. Jindong Ren / Prof. Haiming Guo Institute of Physics, CAS
… the surprising flexibilities of the R9 IHDL software.
This makes the experiment very flexible. All the functions we need can be realized by slightly modifying the IHL file.
Dr. Kai Chang / Prof. Qikun Xue Department of Physics, Tsinghua University
The R9 controller is working great for us.
The internal lock-in has stability and resolution which is comparable to the industry standard SRS 830 and for us that is a big plus of R9. Another plus of R9 is the convenience of use.
Dr. Pratap Raychaudhuri Tata Institute of Fundamental Research