Liquid Crystal Display Research Articles

RADAR MANAGEMENT SYSTEM USING AURDINO

This project presents a radar management system using Arduino, designed to monitor and manage radar data for various applications such as security, traffic monitoring, and environmental tracking. The system utilizes an Arduino microcontroller interfaced with a radar sensor, which detects and tracks objects within a specified range. The data collected from the radar sensor is processed by the Arduino, which then displays relevant information such as distance, speed, and direction of detected objects on an LCD screen or sends the data to a connected PC via serial communication for further analysis. The radar management system provides real-time monitoring and control through an intuitive interface, allowing users to set thresholds for object detection and initiate alerts for unusual movements. The modular nature of the design allows for scalability and integration with other sensors or systems for more advanced applications. This project demonstrates the capability of Arduino-based systems in managing radar data effectively for practical, low-cost solutions in various industries. KeyWords: Arduino, radar management system, object detection, radar sensor, real-time monitoring, distance measurement, speed tracking, direction tracking, LCD display.

Using Artifact Suppression OCT based on Polarization Multiplexing for Tomographic Imaging of LCD Screens

Using Artifact Suppression OCT based on Polarization Multiplexing for Tomographic Imaging of LCD Screens

A novel thermochromic bistable display device based on cholesteric liquid crystals and reversible thermochromic materials

ABSTRACT In this paper, a novel thermochromic bistable display device was designed based on the planar and focal conic texture characteristics of cholesteric liquid crystal maintained without electric field and the reversible discoloration of thermochromic materials with temperature changes, enriching the functions of traditional bistable displays. The feasibility of the novel thermochromic bistable display was verified by analysing and comparing the measured chromaticity coordinates and spectral curves. The contrast and other properties of this device were also studied. The device exhibits a good visual effect whether it is in the same display state at different temperatures, or in the different display states at same temperature. Therefore, it can be used in price tags, signs, industrial equipment, and other prompt scenarios to make up for the dullness of traditional monochrome bistable liquid crystal display.

Design of IoT-Based Digital Medical Record Devices in Medically Underserved Areas

Technological advancements have significantly impacted daily life, particularly in healthcare, where health monitoring devices play a crucial role. This device employs the MLX90614 sensor for measuring body temperature, an EKG sensor for heart rate monitoring, and the MAX30102 sensor for measuring blood oxygen levels. Data generated by these sensors are displayed on an LCD screen and managed using the Arduino Mega 2560 microcontroller. Test results show an impressive accuracy rate of 94.17%, indicating precise outcomes with relatively low error rates for each sensor: 1.05% for heart rate measurement, 2.0% for Spo2 errors with the MAX30102 sensor, and 2.78% for temperature errors with the MLX90614 sensor. With its enhanced capability for real-time and efficient health monitoring, this device has the potential to serve as a practical solution for routine health monitoring, offering significant benefits for maintaining overall health.

Effect of different 3D-printing systems on the flexural strength of provisional fixed dental prostheses: a systematic review and network meta-analysis of in vitro studies

ObjectivesThe aim of this systematic review and network meta-analysis was to compare the flexural strength of provisional fixed dental prostheses (PFDPs) fabricated using different 3D printing technologies, including digital light processing (DLP), stereolithography (SLA), liquid crystal display (LCD), selective laser sintering (SLS), Digital Light Synthesis (DLS), and fused deposition modeling (FDM).Materials and methodsA comprehensive literature search was conducted in databases including PubMed, Web of Science, Scopus, and Open Grey up to September 2024. Studies evaluating the flexural strength of PFDPs fabricated by 3D printing systems were included. A network meta-analysis was performed, using standardized mean differences (SMDs) and 95% confidence intervals (CIs) to assess the effects of each system on flexural strength.ResultsA total of 11 in vitro studies were included, with 9 studies contributing to the network meta-analysis. SLS (77.70%) and SLA (63.82%) systems ranked the highest in terms of flexural strength, while DLP ranked the lowest (23.40%). Significant differences were observed between SLS and multiple other systems, including DLP (-14.58, CI: -22.67 to -6.48), LCD (-14.65, CI: -25.54 to -3.59), FDM (-12.87, CI: -23.30 to -2.52), SLA (-11.41, CI: -18.74 to -4.01), and DLS (-10.89, CI: -21.23 to -0.67). Direct comparisons were limited, with DLP vs. SLA having the most data. Other comparisons were predominantly indirect.ConclusionsSLS and SLA systems exhibited superior flexural strength compared to other systems. However, the limited number of direct comparisons and reliance on indirect evidence suggest that further research is necessary to confirm these findings.

Design and Implementation of Portable Low-Cost Heart Rate Monitoring ECG System

Electrocardiogram is an important health parameter in the diagnosis of cardiovascular diseases, which are among the leading cause of death in the world including Nigeria. This research work “portable low-cost heart rate monitoring ECG system” is designed to assist patient with cardiovascular diseases to monitor their heart condition. It will also assist the medical personnel during the diagnosis of cardiovascular issues. We have used bottom-top software development approach to design an easy to use ECG system by interfacing AD8232 ECG sensor module with Arduino Nano as microcontroller to measure the electrical activity of the heart otherwise known as ‘electrocardiogram’ in BPM (Beat Per Minute) and display the digital reading on a 1602 LCD screen. The coding was done in Arduino IDE using C++ programming language. The system will eliminate the rigorous routine of medical trip and will go a long way to save life as most of the sickness has their root traced to the electrical impulses of the heart.

Design and Construction of A Non-Contact Thermometer with Environmental Calibration for Health Monitoring

Fever is a common symptom of many infections, keeping monitoring devices like thermometers in constant demand. Temperature is an important vital sign for assessing acutely unwell individuals, and is measured frequently in primary care. However, non-contact measurement of temperature can be very challenging as majority of the temperature measuring devices require physical contact. As most diseases spread through human contacts and touching of surfaces, it is therefore very necessary to come up with ways that general hygiene can be more enhanced. It was upon this conviction that we have proposed this system, “Design and Construction of a Non-Contact Thermometer with Environmental Calibration for Health Monitoring”. This we achieved by interfacing MLX90614 Non-Contact Temperature Sensor Module with Arduino Nano Development Board as a microcontroller. The reading of this thermometer was made to display on a 1602 LCD Module that serves as our screen. The coding was done in Arduino IDE using C++ programming language. The systems is powered by a 5 V rechargeable DC source and have reliability of over 98% when compared with the standard thermometer found in the hospital.

PROTOTYPE SISTEM KETERSEDIAAN DAN KAPASITAS TEMPAT PARKIR MOBIL BERBASIS ARDUINO UNO

The current parking system still uses a manual parking system, vehicle owners still have difficulty finding an empty parking space because they have to go around the parking area so it is less efficient and takes a long time. This study aims to help car drivers save time in finding parking locations and knowing the availability of parking spaces. In this study, there are two types of input used: infrared sensors, which function to measure the capacity of the parking space, and RFID sensors, which are used to detect cards. The data processing process is carried out using Arduino Uno, while the LCD is used to display the number of available parking slots and the location of the slot. In addition, the servo motor functions to open the barrier. This system operates in a way, when a car enters and attaches a registered card, the servo motor will open, and the number of parking slots will decrease. The driver then selects a parking slot, which will be automatically marked as "full" on the LCD screen. When the infrared sensor detects a car that wants to exit, the servo motor will open again, and the number of parking slots on the LCD will increase.

Environmental assessment of formal and informal waste treatment of liquid crystal display (LCD) monitors.

In Santiago, Chile, 315,000 liquid crystal display (LCD) monitors are discarded annually. Of this amount, the formal sector of refurbishment and recycling manages only 5%, creating the conditions for the emergence of informal management systems. This study provides the first comprehensive environmental and circularity assessment of monitor treatment across multiple impact categories, identifying trade-offs associated with formal and informal operations. For this, a life cycle assessment approach is utilised at both the product-level and the municipal management systems level, addressing the processes from the collection of the monitor to its end-of-life. At the product-level, two formal and two informal routes for managing an LCD monitor were evaluated. The results reveal that formal treatment companies have the best environmental performance in all the midpoint categories of ReCiPe, achieving benefits 42,000 times greater than formal disposal for marine eutrophication, and 25% better than informal flea market traders across all categories. The analysis of management processes attributes most environmental benefits to refurbishment, representing between 76% and 99% of the magnitude of the assessed environmental impacts. A sensitivity analysis shows that the environmental performance of an informal trader surpasses that of a formal treatment company when both offer the same expected lifespan for a refurbished monitor and maintain their respective refurbishment rates offered. The municipal-level analysis was carried out through the evaluation of three scenarios. The results indicate that the scenario in which the informal sector cooperates with the formal sector and exclusively dedicates to collecting monitors exhibits superior environmental performance, averaging environmental benefits that are ten times greater than the current scenario and achieving valorisation rates of 22%, the highest among the evaluated scenarios. The results of this research contribute to the discussion on formalisation and the promotion of the circular economy in the Global South.

Leveraging Time Lag-Based Diffusion Models to Predict Innovation Adoption for Optimized Product Development

The suggested models for the spread of technical breakthroughs make use of a phase structure to illustrate the steps involved in becoming familiar with the problem and making a choice. For it to portray genuine adopting conduct, a time-lag factor is included into the dispersion process. Depicts a two-step dissemination process by taking into account the reliance of adopting on the informed group of potential purchasers. Assuming that a prospective customer first becomes intrigued by an upcoming the item's availability and then accepts the novel idea at an ulterior point, a method of analysis for sales functions that incorporates time delay is proposed. The efficient propagation method for invention is shown using the various lag factors. Applying nonlinear regression modelling to worldwide shipping data of Acer PCs and Samsung smartphones experimentally validates the suggested models for mathematics. Several comparison models are used to evaluate the predicting abilities of the suggested models. By integrating a distributed time delay function into the implementation manage, a theoretical intergenerational diffusion model is created. To measure how long it takes for innovation to be eventually accepted, the distributed time lag function that follows the Erlang distributions is used. This framework incorporates switch and substituting, two forms of pragmatist shift behaviour. Using real shipping data of LCD (Liquid Crystal Display) computer monitors from consecutive generations, the predicted effectiveness of the suggested methods is examined and contrasted with well-established research. Here is the total accuracy of the approaches that have been proposed: When contrasted with more conventional models, MGDM 1 achieves a 99.33% accuracy rate, MGDM 2 a 99.81% rate, and MGDM 3 a 99.91% accuracy rate.

Dynamic retinal vessel analysis with flicker light stimulation: Higher stimulation frequencies lead to higher vascular responses

Aims/Purpose: Dynamic retinal vessel analysis (DVA) with flicker light is an established method of retinal vessel analysis. Stimulation is generally performed according to a standard protocol at 12.5 Hz. Technologically, a full‐field shutter is used, which is located in the illumination path. In 2002, Polak et al. investigated the flicker‐induced vascular response at different frequencies (2–64Hz). This showed that from frequencies > 4Hz, smaller responses tend to result. However, current developments in light stimulation are moving towards spatio‐temporal stimulators. We therefore used a spatial light modulator (SLM) in a DVA setup. In this work, we investigated vascular responses at a lower and higher stimulation frequency compared to 12.5Hz. The dilation maxima were determined and compared.Methods: We studied 12 subjects (7w, 5m, 26.6 ± 3.7yr, 1 eye). We measured two primary vessels each: a superior temporal artery and a vein. All subjects were free of ocular and systemic diseases. A high‐power LED (515nm) and a transmissive liquid crystal display (Sony LCX017AL) were connected to a mydriatic fundus camera. The SLM was controlled via standard graphics card and a customized software. The field of view was set to 30°. Each subject was measured two times. One measurement was carried out at 3.75Hz and one at 30Hz flicker frequency, randomized among the subjects. As in Polak et al. (2002), measurements were taken with 60s baseline, 60s flicker stimulation. Decay measurement was 120s. The pause time between two measurements was 15min. The mean value and standard deviation were calculated for each stimulation frequency and vessel type. The differences were tested for normal distribution and either the paired t‐test or the Wilcoxon signed‐rank test was performed.Results: All subjects were able to successfully complete the study (n = 12). Arteries showed a mean maximum dilatation of 2.8 ± 1.2% at 3.75Hz and 4.0 ± 1.6% at 30Hz (p = 0.023, Cohen's d = 0.765). Veins showed 2.8 ± 1.7% at 3.75Hz and 4.4 ± 2.5% at 30Hz (p = 0.005, Cohen's d = 1.015).Conclusions: We successfully performed a study on the generation of different flicker frequencies using a transmissive liquid crystal display. The results are contrary to those of Polak et al. (2002). Other parameters need to be compared in further studies.

Superaerophobic polymer objects prototyped via liquid crystal display (LCD)-based 3D printing: one-step post-surface-treatment and application in underwater bubble manipulation

ABSTRACT Underwater superaerophobic surface is of great significance for controllable manipulation of gas bubbles in scientific research and practical applications. However, the fabrication of arbitrary-shaped superaerophobic solid surfaces through a simple and low-cost approach is still hard. Herein, superaerophobic 3D objects were manufactured via liquid crystal display (LCD)-based 3D printing (vat photopolymerisation-based additive manufacturing) combined with one-step post-surface-treatment in sodium hydroxide (NaOH) solution. The influences of NaOH concentration, reaction temperature and time on the wettability of the polymer surface were systematically investigated. After a suitable alkali-treatment, the object surface obtained a bubble contact angle of 159° with extremely low bubble adhesion, featuring the underwater superaerophobicity. Morphology and composition characterisation demonstrated that a hydrophilic gel layer was produced on the printed sheet after the alkali-treatment, which is explained as the main mechanism of the superwetting transition from aerophobicity to superaerophobicity. Interestingly, spontaneously formed surface microgrids (size in xy direction: ∼50 μm) during 3D printing accelerated the alkali-treatment. Further, a superaerophobic 3D tweezer was designed, fabricated, and successfully applied in a toxic nitric oxide (NO) bubble reaction underwater for gas purity detection. The one-step post-surface-treatment method is also suitable for other commercial photosensitive resins and digital-light-processing (DLP) 3D printing.

To Study the Mechanical Properties of Concrete Using Coconut Fibre Ash & CRT Powder with Addition of Asbestos Fiber

One of the ongoing issues with global sustainability in the twenty-first century is concrete. Cement has the highest carbon dioxide emissions and energy consumption of all the components used in concrete, which include water, fine aggregates, cement additives, and cement itself. Cathode-Ray Tube (CRT) technology has fallen behind as new technologies like Liquid Crystal Displays (LCD) and LED Display Panels are constantly replacing it. As a result, there are more CRTs that need to be disposed of annually worldwide. It can modify the physical property of concrete. Use and Recycling of CRT Tube also reduce environmental hazard. Coconut coir fiber ash in concrete construction is an alternative of cement, coconut fiber ash has a good tendency when uses as a partial replacement for cement. Cement being costly material, so if partially replaced by coconut fiber ash can reduces the cost of concrete. The heat of hydration is decreased, which help in improving the drying, shrinkage and facilitate durability of the concrete mix. Coconut Fiber Ash has a tendency to increase Compressive, tensile, and flexural strength. Asbestos fibers were historically used as an additive in concrete to enhance its properties, primarily its tensile strength and resistance to cracking. The mechanical qualities of concrete, such as its tensile strength, durability, and fire resistance, were successfully improved with asbestos fibers. Because of this, asbestos-reinforced concrete gained popularity in the middle of the 20th century for a variety of building uses. This project's aim is to stop environmental damage caused by inappropriate disposal by employing it as an additional material in specially developed by Coconut Fiber Ash and CRT. The 11% of Coconut Fiber Ash and CRT powder replace with cement and with addition of 0.8% Asbestos fibers. Fiber were used as reinforcement. The compression strength test, flexural strength test, and split tensile strength test were used to determine the maximum proportion of replacement

DESIGN AND DEVELOPMENT OF AN ARTIFICIAL INTELLIGENCE-BASED ALCOHOL DETECTOR SYSTEM FOR VEHICLE ACCIDENT PREVENTION AS A REPLACEMENT FOR THE MANUAL SOUTH-SMELLING TECHNIQUE

Artificial intelligence (AI), sometimes called machine, device or system intelligence, is intelligence demonstrated by machines, in contrast to the natural intelligence displayed by humans and other animals. In other words, it is an area of computer science that emphasizes the creation of intelligent machines that work and react like humans. Until recently, computers could do only what we already programmed them to do. But now, they can learn it themselves and can show us the result that we have never told them before. The alcohol detector system works like human to detect by itself the presence of alcohol in a drunken driver. There was no technology to check the driver either drinks alcohol or not by sensing the alcohol consumption by the driver, which was considered to be the main cause of the accidents on our roads. There was manual checking after particular distance on the roads or the highways but still these checks were not sufficient to stop the happening of the mishaps. Besides, it also involves smelling the mouth of the suspected driver, which is capable of spreading the deadly virus and this can expose our dear law enforcement agents to great risk. Hence, the manual methods must be discouraged as we face the reality of covid19 new normal. So, to avoid these problems, alcohol detector system is developed. This system is developed by integrating the alcohol sensor with the microcontroller 16F877A. The alcohol sensor used in this work is MQ-3 which is to detect the alcohol content in human breath, liquid crystal display (LCD) helps to display information about the device and buzzer sounds to indicate presence of alcohol. When the device remains silent, it means no alcohol but when buzzer sounds, it means there is alcohol detected. The main purpose behind this work is “Drunk driving detection”. Now a day, many accidents are happening because of the alcohol consumption of the driver or the person who is driving the vehicle. The work aims at designing a system that detects alcohol leakage and alerts the subscriber through alarm and status display besides turning off the alcohol supply valve as a primary safety measure, to enable real-time alcohol detection with minimal latency, to provide immediate alerts or notifications when alcohol is detected above predefined thresholds, to seamlessly integrate with advanced sensors (e.g., breathalyzers, infrared, or gas sensors), to collect and analyze data, to support multi-sensor data fusion for improved detection accuracy, incorporate AI algorithms to distinguish between genuine alcohol consumption and incidental exposure (e.g, from hand sanitizers or cleaning agents) and adapt detection sensitivity based on user profiles or situational contexts. The system is an intelligent system, as it does not create nuisance by continuously sounding alarm but the alarm stops beeping once the concentration of the alcohol in the atmosphere after leakage goes below the set point. This work will minimize losses occasioned by explosions, accident while driving due to alcohol leakages and improve safety of life. Alcohol leakage detector system consists of buzzer, which warns by sounding. The suggested system uses sensor technology and machine learning techniques to detect alcohol intake in a non-invasive, accurate, and dependable manner. The system is a reliable and efficient tool for a range of applications, such as law enforcement, healthcare, and transportation, because of its capacity to learn from data and adjust to novel situations. The design and development of the AI-based alcohol detector should serve as a basis for further research and development. For instance, more research and development should be done to further enhance the system's sensitivity, specificity, and accuracy. Additionally, conduct thorough field testing and validation, for instance, to ensure the system's dependability and effectiveness in real-world scenarios.

Food Spoilage Detection Monitoring and Alerting System

Tackling Food safety measures and mitigating spoilage are critical Challenges in public health. In the present work, robust solution for the continuous monitoring and management of perishable food products is observed. By incorporating temperature and gas sensors, Food Spoilage Detection and Alerting System using IoT is designed to detect early signs of spoilage, enabling timely intervention to prevent food waste and its safety. The temperature sensor monitors the surrounding environment, emphasizing the crucial role of temperature in accelerating the spoilage of sensitive foods such as dairy and meat. In tandem the gas sensor detects specific volatile compounds such as Ethylene, Ammonia, Methane, Nitrogen Dioxide, and Carbon Dioxide that act as indicators of food degradation, allowing for the identification of spoilage risks before they become significant. NODEMCU microcontroller is central to the system's operation which is an efficient and compact IoT platform that gathers and processes data from the sensors. It uses predefined thresholds to evaluate environmental conditions, ensuring accurate spoilage detection. Real-time data is displayed on an LCD screen, giving users immediate access to food storage conditions. If gas levels exceed the predefined thresholds, the system triggers an alert message, notifying users of potential spoilage. Alerts are generated through the UBIDOTS app and delivered via email or registered mobile number, providing timely notifications that enable users to take prompt action in maintaining food quality.

ILLUMINATION PROPERTIES AND GADGET EFFICIENCY STEADINESS OF WLEDS BASED ON QUANTUM DOTS

The recent improvements in picture quality have led to the need for new methods to create displays that meet more rigorous standards. While the screen market is mainly dominated by liquid crystal display (LCD) and light emitting diode (LED) technology, these technologies have downsides solvable via creating augmented electroluminescent screens. Utilizing sticky quantum dots (QDs) in the form of down transmuters facilitates creating screens featuring highly improved chroma clarity as well as range. As such, sticky nanocrystals prove a promising option when it comes to creating electroluminescent devices, providing a simple way to build high-quality displays. The QDs that emit light featuring significant fluorescent quantum output along with chroma clarity covering the entire visible spectrum, as well as significantly-bright singular-chroma LED apparatuses featuring extrinsic quantum proficiencies reaching 1.30%, 0.39%, 1.04%, and 2.10% respectively in the case of blue, red, orange, and green hues, saw the prospect of development. Additionally, white LEDs were created by combining QDs, achieving a color temperature of 5,300 K and over 80% color rendering index. The LED performance is also extensively evaluated, including color stability, and device efficiency, providing crucial data for the advancement of high-quality electroluminescent displays.

Creating Tunable Micro-Optical Components via Photopolymerization 3D Printing Combined with Polymer-Dispersed Liquid Crystals.

Based on additive manufacturing via photopolymerization, this study combines polymer-dispersed liquid crystal (PDLC) technology with 3D printing technology to produce tunable micro-optical components with switchable diffraction or focusing characteristics. The diffraction grating and Fresnel zone plate are the research targets. Their structures are designed and simulated to achieve expected optical functions. A liquid crystal display (LCD) 3D printer is used to produce structures on transparent conductive substrates. The printed structures are filled with PDLCs and covered with transparent conductive substrates to achieve tunable functions. The proposed configurations are implemented and verified. The experimental results show that the diffraction efficiency of the 0th order increases from 15% to 50% for the diffraction grating and the focusing spot intensity decreases from 74% to 12% after the application of an electric field. These results demonstrate the feasibility of the proposed tunable optical component configurations.

Enhanced Circularly Polarized Luminescence Modulation Using Dichroic Conjugated Polymer in Cholesteric Liquid Crystals

AbstractNegative dichroic dyes are crucial for enhancing the brightness of liquid crystal displays (LCDs) and modulating circularly polarized luminescence (CPL) in cholesteric liquid crystals (CLCs) through supramolecular co‐assembly. However, the majority of fluorescent molecules exhibit positive dichroism, and there is a limited understanding of designing negative dichroic molecules. In this paper, a novel design principle is proposed to construct the negative dichroic polymer by introducing through space charge transfer (TSCT) side chain structure to the polymer backbone. Specifically, two conjugated polymers (P1, P2) are synthesized using the Suzuki coupling reaction of two donor‐acceptor (D‐A) type monomers (V‐type M1 and I‐type M2) with fluorenyl monomer. P1 exhibits negative dichroism, and its orientational order parameter (SF) is up to SFP1 = –0.18. On the contrary, P2 is positive dichroism (SFP2 = + 0.27). This variation arises from the differing orientations of the rigidly functional side chains (SFM1 = + 0.07; SFM2 = + 0.31), which affect the alignment (parallel or perpendicular) of the polymer backbone toward CLCs molecules. This phenomenon facilitates controllable dichroism and precisely modulates the handedness of CPL signals, thereby facilitating the successful implementation of multidimensional information encryption systems in CLCs.

Automation of I-V curve measurement for photovoltaic modules: a practical approach

A photovoltaic (PV) module's efficiency is influenced by factors such as environmental conditions (Solar light intensity, temperature) and the load. These modules can encounter various problems that significantly impact their power output, leading to poor overall system performance. The Current-Voltage (I-V) curve is a graphical representation that illustrates the characteristics of a PV module (MPV). Measuring this curve in real-time is essential for diagnosing faults and analyzing PV installations. It offers a quick way to test modules and identify issues like shading, mismatching... This paper presents an experimental system designed to measure the I-V curve of a PV module under real operating conditions. The measurement process is automated and serves to assess the module’s health, degradation, and overall performance. An Arduino card is used to control the measurements, which are conducted in situ, in real time. The effectiveness of this method is validated through experimental data collected from a PV module. The developed system provides a visual display of the module's electrical characteristics and shows solar solar light intensity and temperature in real time on an LCD screen. All results are also displayed on PC. Experimental results are presented.

Light-guided dynamic phantom to mimic microvasculature for biomedical applications: an exploration for pulse oximeter.

Dynamic phantoms capable of changing optical properties by control are essential for standardizing and calibrating spectroscopy systems such as the pulse oximeter. However, current liquid dynamic phantoms containing human blood have a short shelf life and require complex experimental setups. Some solid dynamic phantoms are influenced by the angular-dependent performance of the liquid crystal display (LCD), some have a low spatial resolution, and some have slow control of optical properties. We aimed to develop a solid dynamic phantom, which can overcome these obstacles by changing the optical properties rapidly and generating dynamic biological signals. The absorption properties of the phantom can be controlled in real time by modulating an LCD. A light guide was employed to avoid the angular-dependent performance of the LCD by isolating the scattering top-layer tissue-mimicking silicone phantom from the LCD. The dynamic phantom was characterized at 940, 660, 530, and 455nm to create a lookup table. Photoplethysmography signals of different heart rates from 80 to 120 beats per minute were synthesized, and oxygen saturation levels at 86%, 90%, 95%, and 100% were generated at multiple wavelengths. The design, characterization, and potential applications of the dynamic phantom have been presented. This dynamic phantom can simulate various biological signals by applying corresponding modulation signals and has the potential to calibrate and validate pulse oximeter, imaging, and spectroscopy systems.