21 papers · ranked by Valyu relevance
Banghe Zhu, Henry Jonathan, Agata Szłapa-Kula, Sławomir Kula
To translate near-infrared (NIR) and shortwave infrared (SWIR) fluorescence imaging into the clinic, the paired imaging device needs to detect trace doses of fluorescent imaging agents. Except for the filtration scheme and excitation light source, the image sensor used will finally determine the detection limitations…
Changhan Yoon, Changho Lee
Recent advances in sensor technology have allowed us to develop many interesting applications and enhance the quality of human life. In particular, imaging sensors have been regarded as critical elements in achieving high-level imaging methods such as laser-based imaging, ultrasound imaging, and X-ray imaging, as well…
B. Walasek-Hoehne, K. H. Hoehne, Rajiv Kumar Singh
Cameras are used to observe and store information transmitted by light. The intensity of the observed light is proportional to the impinging number of photons in it, and the photons energy is given by its wavelength (E = hc/λ). Cameras constitute of optics elements to generate an image of a distant object onto a…
Md Rahatul Islam Udoy, Shamiul Alam, Md Mazharul Islam, Akhilesh Jaiswal + 1 more
'Akhilesh Jaiswal' 'Ahmedullah Aziz'] Abstract— Digital pixel sensor (DPS) has evolved as a pivotal component in modern imaging systems and has the potential to revolutionize various fields such as medical imaging, astronomy, surveillance, IoT devices, etc. Compared to analog pixel sensors, the DPS offers high speed…
Reza Abbasi, Xinyue Hu, Alain Zhang, Isabelle Dummer + 3 more
Optical biosensors have emerged as a powerful tool in analytical biochemistry, offering high sensitivity and specificity in the detection of various biomolecules. This article explores the advancements in the integration of optical biosensors with microfluidic technologies, creating lab-on-a-chip (LOC) platforms that…
Azar Yadegari, Mohammad Azim Karami, Mohammad Reza Daliri
Implantable image sensors have several biomedical applications due to their miniature size, light weight, and low power consumption achieved through sub-micron standard CMOS (Complementary Metal Oxide Semiconductor) technologies. The main applications are in specific cell labeling, neural activity detection, and…
Henrik Andreasson, Giorgio Grisetti, Todor Stoyanov, Alberto Pretto
A sensor is a device that converts a physical parameter or an environmental characteristic (e.g., temperature, distance, speed, etc.) into a signal that can be digitally measured and processed to perform specific tasks. Mobile robots need sensors to measure properties of their environment, thus allowing for safe…
Susrutha Babu Sukhavasi, Suparshya Babu Sukhavasi, Khaled Elleithy, Shakour Abuzneid + 1 more
'Shakour Abuzneid' 'Abdelrahman Elleithy'] Recent technology advances in CMOS image sensors (CIS) enable their utilization in the most demanding of surveillance fields, especially visual surveillance and intrusion detection in intelligent surveillance systems, aerial surveillance in war zones, Earth environmental…
Ganghun Kim, Kyle J. Isaacson, Rachael Palmer, Rajesh Menon
Photography usually requires optics in conjunction with a recording device (an image sensor). Eliminating the optics could lead to new form factors for cameras. Here, we report a simple demonstration of imaging using a bare CMOS sensor that utilizes computation. The technique relies on the space variant point-spread…
Jimin Lee, Sang-Hwan Kim, Hyeunwoo Kwen, Juneyoung Jang + 4 more
'Seunghyuk Chang' 'JongHo Park' 'Sang-Jin Lee' 'Jang-Kyoo Shin'] This paper presents a CMOS depth image sensor with offset pixel aperture (OPA) using a back-side illumination structure to improve disparity. The OPA method is an efficient way to obtain depth information with a single image sensor without additional…
Gang Huang, Hong Jiang, Kim Matthews, Paul A. Wilford
In this paper, we propose a lensless compressive imaging architecture. The architecture consists of two components, an aperture assembly and a sensor. No lens is used. The aperture assembly consists of a two dimensional array of aperture elements. The transmittance of each aperture element is independently…
Zihan Yin, Md Abdullah-Al Kaiser, Lamine Ousmane Camara, Mark Camarena + 4 more
Neuromorphic image sensors draw inspiration from the biological retina to implement visual computations in electronic hardware. Gain control in phototransduction and temporal differentiation at the first retinal synapse inspired the first generation of neuromorphic sensors, but processing in downstream retinal…
Gang Huang, Hong Jiang, Kim Matthews, Paul A. Wilford
—In this paper, we propose a lensless compressive sensing imaging architecture. The architecture consists of two components, an aperture assembly and a sensor. No lens is used. The aperture assembly consists of a two dimensional array of aperture elements. The transmittance of each aperture element is independently…
Kangping Hu, Christopher E. Arcadia, Jacob K. Rosenstein
This paper presents a 100 × 100 super-resolution integrated sensor array for microscale electrochemical impedance spectroscopy (EIS) imaging. The system is implemented in 180 nm CMOS with 10 μm × 10 μm pixels. Rather than treating each electrode independently, the sensor is designed to measure the mutual capacitance…
Ole Franz, Heikki Häkkänen, Salla Kovanen, Kati Heikkilä-Huhta + 2 more
A variety of costly research-grade imaging devices are available for the detection of spectroscopic features. Here we present an affordable, open-source and versatile device, suitable for a range of applications. We provide the files to print the imaging chamber with commonly available 3D printers and instructions to…
John M. Branning, Kealy A. Faughnan, Austin A. Tomson, Grant J. Bell + 15 more
The widespread availability and diversity of open-source microcontrollers paired with off-the-shelf electronics and 3D printed technology has led to the creation of a wide range of low-cost scientific instruments, including microscopes, spectrometers, sensors, data loggers, and other tools that can be used for…
Christopher E. Arcadia, Kangping Hu, Slava Epstein, Meni Wanunu + 2 more
Microorganisms account for most of the biodiversity on earth. Yet while there are increasingly powerful tools for studying microbial genetic diversity, there are fewer tools for studying microorganisms in their natural environments. In this paper, we present recent advances in CMOS electrochemical imaging arrays for…
Authors not listed
Battery research increasingly relies on advanced imaging, yet open access to such data remains rare, scattered across various sources, and difficult to find. The Battery Imaging Library (BIL) is the first open, curated collection of multi-modal and multi-length scale battery imaging datasets, accompanied by a…
Gaurav Bahuguna, Fernando Patolsky
Electrochemical reactions are the unrivaled backbone of next generation energy storage, energy conversion and healthcare devices. However, the in-situ real-time visualization of electrochemical reactions, which can shed light on various critical unknown insights on the electrochemical processes, still remains the…
Kanda Borgognoni, Bradley Guilliams, Rachel Cohen, Christopher Ackerson
A cloneable NanoParticle (cNP) is an inorganic nanoparticle that is synthesized by a protein. The protein determines the elemental composition, size, morphology, and other properties of the nanoparticle. Here, we describe the use of a cloneable Selenium NanoParticle (cSeNP) as a cloneable imaging contrast agent in…
Rananjaya Gamage, Bradley Smith
Indocyanine Blue (ICB) is the deep-red, pentamethine analogue of the widely used clinical near-infrared heptamethine cyanine dye, Indocyanine Green (ICG). The two fluorophores have the same number of functional groups and molecular charge and vary only by a single vinylene unit in the polymethine chain which produces a…