Parkwalk Advisors

Proxisense specializes in developing advanced proximity sensors and fluid contamination monitoring systems, utilizing eddy current technology to enhance the performance of complex rotating equipment. Their proximity sensors are particularly effective in real-time health monitoring of turbine blades, which can prolong component lifespans and minimize maintenance and downtime costs. The company primarily targets the power and aerospace industries, collaborating with major original equipment manufacturers to address critical challenges. Additionally, Proxisense's fluid contamination systems offer reliable, real-time monitoring of fuels and lubricants, which is essential for transportation assets operating in diverse environments. By detecting contamination early, Proxisense helps reduce damage to components, maintain optimal operating conditions, and prevent potential system failures.

Zomp is a provider of consumer electronics.

Paragraf Ltd. is a UK-based company specializing in the development of graphene technology and the production of two-dimensional materials. Established in 2015, Paragraf focuses on creating graphene-based electronic devices, including magnetic sensors and biosensors, that are designed to enhance technological performance in various sectors such as electronics, energy, research, automation, and healthcare. The company employs contamination-free technology to ensure the production of high-purity graphene products that meet commercial quality standards. Paragraf's innovations aim to optimize process control, improve quality assurance, and facilitate monitoring of environmental and health conditions, thereby contributing to advancements in green energy generation and other critical applications.

Bramble Energy Ltd. is a London-based company that specializes in the design, development, and manufacture of printed circuit board (PCB) fuel cells, specifically proton exchange membrane fuel cells (PEMFCs). Incorporated in 2015, it leverages the capabilities of the global PCB industry to produce high-performance, cost-effective fuel cell stacks. The company's product lineup includes modular PCBFC stacks, ranging from 20 W to 5 kW, as well as custom-designed solutions. Bramble Energy serves various sectors, including stationary, portable, and automotive applications, aiming to provide gigawatts of fuel cell hardware. By utilizing innovative manufacturing methods and materials, the company enables clients to reduce energy consumption and lower their carbon footprints.

Paragraf Ltd. is a UK-based company specializing in the development of graphene technology and the production of two-dimensional materials. Established in 2015, Paragraf focuses on creating graphene-based electronic devices, including magnetic sensors and biosensors, that are designed to enhance technological performance in various sectors such as electronics, energy, research, automation, and healthcare. The company employs contamination-free technology to ensure the production of high-purity graphene products that meet commercial quality standards. Paragraf's innovations aim to optimize process control, improve quality assurance, and facilitate monitoring of environmental and health conditions, thereby contributing to advancements in green energy generation and other critical applications.

Porotech is a spin-out from the University of Cambridge that specializes in the development of gallium nitride (GaN) semiconductor technologies. Co-founded by Dr. Tongtong Zhu, Dr. Yingjun Liu, and Prof. Rachel Oliver, the company focuses on creating energy-efficient wide-bandgap semiconductors through advanced material technologies. By harnessing the potential of GaN, Porotech aims to enhance the efficiency of light-emitting diodes and various electronic devices, thereby contributing to innovations in the electronics industry.

Cambridge GaN Devices specializes in the development and commercialization of gallium nitride (GaN) power devices aimed at improving energy efficiency in electronic applications. The company offers a variety of GaN-based semiconductor products that enhance power conversion and minimize energy loss across different systems. These advanced devices find applications in sectors such as renewable energy, electric vehicles, and consumer electronics, supporting the shift towards more sustainable technologies. Cambridge GaN Devices focuses on creating transistors that are faster, more compact, and more efficient than traditional silicon alternatives, thereby enabling industries to utilize tailored semiconductors for critical applications. The company collaborates with industry partners to promote innovation and facilitate the integration of its technology into the power semiconductor market.

Bramble Energy Ltd. is a London-based company that specializes in the design, development, and manufacture of printed circuit board (PCB) fuel cells, specifically proton exchange membrane fuel cells (PEMFCs). Incorporated in 2015, it leverages the capabilities of the global PCB industry to produce high-performance, cost-effective fuel cell stacks. The company's product lineup includes modular PCBFC stacks, ranging from 20 W to 5 kW, as well as custom-designed solutions. Bramble Energy serves various sectors, including stationary, portable, and automotive applications, aiming to provide gigawatts of fuel cell hardware. By utilizing innovative manufacturing methods and materials, the company enables clients to reduce energy consumption and lower their carbon footprints.

Bramble Energy Ltd. is a London-based company that specializes in the design, development, and manufacture of printed circuit board (PCB) fuel cells, specifically proton exchange membrane fuel cells (PEMFCs). Incorporated in 2015, it leverages the capabilities of the global PCB industry to produce high-performance, cost-effective fuel cell stacks. The company's product lineup includes modular PCBFC stacks, ranging from 20 W to 5 kW, as well as custom-designed solutions. Bramble Energy serves various sectors, including stationary, portable, and automotive applications, aiming to provide gigawatts of fuel cell hardware. By utilizing innovative manufacturing methods and materials, the company enables clients to reduce energy consumption and lower their carbon footprints.

Sorex Sensors Limited specializes in the design and manufacture of film bulk acoustic resonator (FBAR) technology-based micro-electro-mechanical system (MEMS) mass sensors for various industrial and consumer applications. Founded in 2017 and headquartered in the United Kingdom, the company fabricates its devices on silicon wafers, utilizing a thin film of piezoelectric material that resonates to detect mass changes accurately. These sensors are capable of measuring mass down to the femtogram range and can simultaneously monitor temperature with a resolution of 0.2 °C. Their small size and low power consumption make them suitable for diverse applications, including thin film metrology, particulate monitoring, and gas detection. Additionally, the surface of the sensors can be functionalized to selectively detect specific targets, enhancing their versatility in detecting harmful compounds in various environments, such as homes and workplaces.

Paragraf Ltd. is a UK-based company specializing in the development of graphene technology and the production of two-dimensional materials. Established in 2015, Paragraf focuses on creating graphene-based electronic devices, including magnetic sensors and biosensors, that are designed to enhance technological performance in various sectors such as electronics, energy, research, automation, and healthcare. The company employs contamination-free technology to ensure the production of high-purity graphene products that meet commercial quality standards. Paragraf's innovations aim to optimize process control, improve quality assurance, and facilitate monitoring of environmental and health conditions, thereby contributing to advancements in green energy generation and other critical applications.

Porotech is a spin-out from the University of Cambridge that specializes in the development of gallium nitride (GaN) semiconductor technologies. Co-founded by Dr. Tongtong Zhu, Dr. Yingjun Liu, and Prof. Rachel Oliver, the company focuses on creating energy-efficient wide-bandgap semiconductors through advanced material technologies. By harnessing the potential of GaN, Porotech aims to enhance the efficiency of light-emitting diodes and various electronic devices, thereby contributing to innovations in the electronics industry.

Inflowmatix is a spin-out company from the InfraSense Labs at the Department of Civil and Environmental Engineering of Imperial College London. Inflowmatix builds upon the unique cross-disciplinary expertise from sensing to advanced modelling and optimization and the active research collaborations with water utilities and IT system integrators. Inflowmatix creates innovative and customer tailored solutions for the steady-state, resilient and energy efficient operation of water supply networks by continuously monitoring and analyzing the fluid dynamics in complex networks. This allows operators to continuously gain unique insight and proactively optimize the dynamic network performance in order to extend the service life of infrastructure assets. Our expertise in modelling the steady and unsteady-state hydraulics of water distribution networks, combined with knowledge and experience in the design and implementation of embedded electronic systems, yield compelling returns on investment for our customers. Many cities in the world face the problem of ageing infrastructure, increasing population demand and climate change. This combined with increasing regulatory and financial pressure means water utilities are actively seeking novel, integrated and optimized operational strategies for managing leakage, demand and energy efficiency in order to deliver high-quality of service to customers within cost constraints. Water companies and operators are facing unparalleled challenges to meet increasing demand with limited water and financial resources. By successfully applying the technologies and analytics developed by Inflowmatix to water supply networks, we significantly improve the management of leakage, demand, energy and operational incidents, thus providing multiple operational benefits for network operators.

YASA was founded on the principle that small, light electric motors would play a growing role in meeting both the strict emissions targets being set globally in a wide range of industries and the requirement for greater efficiency through electrification. The Company was incorporated in 2009 based on a unique patented motor technology invented by the Company’s founder and CTO Dr Tim Woolmer whilst studying for his DPhil at Oxford University. The unique YASA motor technology is ideal for a range of mobile applications such as hydraulics replacement, power generation, traction and propulsion and hybridisation. YASA Motors manufactures a range of standard electric motors and generators based on our unique motor topology at our factory and Company Headquarters in Abingdon, Oxfordshire. The YASA-750, YASA-250 and YASA-400 products have been designed to be integrated into customers’ products in a range of markets and industries with minimal application engineering. In addition to our standard products, YASA has a design and development team dedicated to making bespoke motors for customers for medium-high volume applications.

Paragraf Ltd. is a UK-based company specializing in the development of graphene technology and the production of two-dimensional materials. Established in 2015, Paragraf focuses on creating graphene-based electronic devices, including magnetic sensors and biosensors, that are designed to enhance technological performance in various sectors such as electronics, energy, research, automation, and healthcare. The company employs contamination-free technology to ensure the production of high-purity graphene products that meet commercial quality standards. Paragraf's innovations aim to optimize process control, improve quality assurance, and facilitate monitoring of environmental and health conditions, thereby contributing to advancements in green energy generation and other critical applications.

Cambridge GaN Devices specializes in the development and commercialization of gallium nitride (GaN) power devices aimed at improving energy efficiency in electronic applications. The company offers a variety of GaN-based semiconductor products that enhance power conversion and minimize energy loss across different systems. These advanced devices find applications in sectors such as renewable energy, electric vehicles, and consumer electronics, supporting the shift towards more sustainable technologies. Cambridge GaN Devices focuses on creating transistors that are faster, more compact, and more efficient than traditional silicon alternatives, thereby enabling industries to utilize tailored semiconductors for critical applications. The company collaborates with industry partners to promote innovation and facilitate the integration of its technology into the power semiconductor market.

Inductosense Ltd specializes in the manufacture of wireless, battery-free sensors that detect cracks, corrosion, and defects in various structures and products. Founded in 2015 and based in Bristol, United Kingdom, the company has developed the Wireless And Non Destructive (WAND) Evaluation System, which includes a handheld measurement probe and a set of sensors that can be permanently attached to surfaces. These sensors operate under coatings, insulation, or repairs, allowing for efficient and non-invasive inspections. Additionally, Inductosense offers TRND systems designed for monitoring internal corrosion and erosion in pipework and vessels. Their technology facilitates fast, repeatable inspections and enables clients to gather consistent data on structural integrity over time, making it valuable for applications in large structures and composite repairs.

Perpetuum Ltd. specializes in the engineering, manufacturing, and commercialization of electromagnetic vibration harvesting micro generators. Founded in 2004 and based in Southampton, United Kingdom, the company focuses on creating battery-free vibration energy harvesters and wireless sensor nodes for various applications, including rail, oil and gas, chemicals, power generation, and water treatment. Perpetuum's technology converts mechanical vibrations into electrical energy, enabling autonomous, maintenance-free wireless sensors that monitor equipment conditions and processes. This innovative approach enhances efficiency and safety in fleet management and services, particularly within the rail industry. As a technology spin-off from the University of Southampton, Perpetuum has established itself as a leader in vibration energy harvesting, providing practical solutions for wireless automation.

Proxisense specializes in developing advanced proximity sensors and fluid contamination monitoring systems, utilizing eddy current technology to enhance the performance of complex rotating equipment. Their proximity sensors are particularly effective in real-time health monitoring of turbine blades, which can prolong component lifespans and minimize maintenance and downtime costs. The company primarily targets the power and aerospace industries, collaborating with major original equipment manufacturers to address critical challenges. Additionally, Proxisense's fluid contamination systems offer reliable, real-time monitoring of fuels and lubricants, which is essential for transportation assets operating in diverse environments. By detecting contamination early, Proxisense helps reduce damage to components, maintain optimal operating conditions, and prevent potential system failures.

Bramble Energy Ltd. is a London-based company that specializes in the design, development, and manufacture of printed circuit board (PCB) fuel cells, specifically proton exchange membrane fuel cells (PEMFCs). Incorporated in 2015, it leverages the capabilities of the global PCB industry to produce high-performance, cost-effective fuel cell stacks. The company's product lineup includes modular PCBFC stacks, ranging from 20 W to 5 kW, as well as custom-designed solutions. Bramble Energy serves various sectors, including stationary, portable, and automotive applications, aiming to provide gigawatts of fuel cell hardware. By utilizing innovative manufacturing methods and materials, the company enables clients to reduce energy consumption and lower their carbon footprints.

Paragraf Ltd. is a UK-based company specializing in the development of graphene technology and the production of two-dimensional materials. Established in 2015, Paragraf focuses on creating graphene-based electronic devices, including magnetic sensors and biosensors, that are designed to enhance technological performance in various sectors such as electronics, energy, research, automation, and healthcare. The company employs contamination-free technology to ensure the production of high-purity graphene products that meet commercial quality standards. Paragraf's innovations aim to optimize process control, improve quality assurance, and facilitate monitoring of environmental and health conditions, thereby contributing to advancements in green energy generation and other critical applications.

YASA was founded on the principle that small, light electric motors would play a growing role in meeting both the strict emissions targets being set globally in a wide range of industries and the requirement for greater efficiency through electrification. The Company was incorporated in 2009 based on a unique patented motor technology invented by the Company’s founder and CTO Dr Tim Woolmer whilst studying for his DPhil at Oxford University. The unique YASA motor technology is ideal for a range of mobile applications such as hydraulics replacement, power generation, traction and propulsion and hybridisation. YASA Motors manufactures a range of standard electric motors and generators based on our unique motor topology at our factory and Company Headquarters in Abingdon, Oxfordshire. The YASA-750, YASA-250 and YASA-400 products have been designed to be integrated into customers’ products in a range of markets and industries with minimal application engineering. In addition to our standard products, YASA has a design and development team dedicated to making bespoke motors for customers for medium-high volume applications.

8Power Limited specializes in the manufacturing of autonomous sensor systems tailored for various sectors, including automotive, transportation, civil engineering, industrial equipment, and utility infrastructure. The company has developed wireless sensor technology that provides real-time condition monitoring data and analytics for industrial applications. This technology enables clients to monitor the performance of their assets, such as pumps, motors, and gearboxes, across numerous remote locations. By offering a cost-effective solution, 8Power facilitates easy installation and effective machine condition monitoring, serving industries such as water and waste treatment, manufacturing, and oil and gas.

Inflowmatix is a spin-out company from the InfraSense Labs at the Department of Civil and Environmental Engineering of Imperial College London. Inflowmatix builds upon the unique cross-disciplinary expertise from sensing to advanced modelling and optimization and the active research collaborations with water utilities and IT system integrators. Inflowmatix creates innovative and customer tailored solutions for the steady-state, resilient and energy efficient operation of water supply networks by continuously monitoring and analyzing the fluid dynamics in complex networks. This allows operators to continuously gain unique insight and proactively optimize the dynamic network performance in order to extend the service life of infrastructure assets. Our expertise in modelling the steady and unsteady-state hydraulics of water distribution networks, combined with knowledge and experience in the design and implementation of embedded electronic systems, yield compelling returns on investment for our customers. Many cities in the world face the problem of ageing infrastructure, increasing population demand and climate change. This combined with increasing regulatory and financial pressure means water utilities are actively seeking novel, integrated and optimized operational strategies for managing leakage, demand and energy efficiency in order to deliver high-quality of service to customers within cost constraints. Water companies and operators are facing unparalleled challenges to meet increasing demand with limited water and financial resources. By successfully applying the technologies and analytics developed by Inflowmatix to water supply networks, we significantly improve the management of leakage, demand, energy and operational incidents, thus providing multiple operational benefits for network operators.

YASA was founded on the principle that small, light electric motors would play a growing role in meeting both the strict emissions targets being set globally in a wide range of industries and the requirement for greater efficiency through electrification. The Company was incorporated in 2009 based on a unique patented motor technology invented by the Company’s founder and CTO Dr Tim Woolmer whilst studying for his DPhil at Oxford University. The unique YASA motor technology is ideal for a range of mobile applications such as hydraulics replacement, power generation, traction and propulsion and hybridisation. YASA Motors manufactures a range of standard electric motors and generators based on our unique motor topology at our factory and Company Headquarters in Abingdon, Oxfordshire. The YASA-750, YASA-250 and YASA-400 products have been designed to be integrated into customers’ products in a range of markets and industries with minimal application engineering. In addition to our standard products, YASA has a design and development team dedicated to making bespoke motors for customers for medium-high volume applications.

High temperature, high performance piezoelectric devices: reducing energy and operating costs, increasing reliability and safety Ionix Advanced Technologies specialises in high performance piezoelectric devices and materials, offering a range of sensors, actuators and transducer devices based on its novel high-temperature piezoelectric materials, with uses including NDT inspection and ultrasonic applications.

Cambridge CMOS Sensors Limited is a semiconductor company based in Cambridge, United Kingdom, founded in 2008 as a spin-off from Cambridge University. The company specializes in developing, manufacturing, and marketing advanced gas sensor solutions for air quality monitoring and breath analysis applications. Its product lineup includes gas sensors, infrared components, and evaluation kits tailored for smartphones, wearables, and smart home devices. Cambridge CMOS Sensors focuses on monitoring hazardous gases and volatile organic compounds (VOCs) and is recognized for its innovative micro hotplate gas-sensor technology, which allows for miniaturization, lower power consumption, and rapid response times. The company serves both consumer and industrial markets, with operations spanning across China, Europe, Japan, Korea, Taiwan, and the United States. As of 2016, it operates as a subsidiary of ams AG.

Surrey NanoSystems manufactures nanoscale materials for use in engineering and product applications. It offers Vantablack, a super-black coating that is applied to surfaces using vacuum-deposition technology, as well as for spraying and post-processing. Surrey NanoSystem’s Vantablack is used in various applications, such as stray light suppression, architectural lighting, aesthetic applications, calibration sources, sensors, telescopes, architecture, IR imaging systems, spectroscopy, automotive, cinematography optics, satellite calibration sources, camera lenses, and other applications. CEVP that began operation in 2006 became Surrey NanoSystems in December 2006, with its headquarters in Newhaven in the United Kingdom.

Perpetuum Ltd. specializes in the engineering, manufacturing, and commercialization of electromagnetic vibration harvesting micro generators. Founded in 2004 and based in Southampton, United Kingdom, the company focuses on creating battery-free vibration energy harvesters and wireless sensor nodes for various applications, including rail, oil and gas, chemicals, power generation, and water treatment. Perpetuum's technology converts mechanical vibrations into electrical energy, enabling autonomous, maintenance-free wireless sensors that monitor equipment conditions and processes. This innovative approach enhances efficiency and safety in fleet management and services, particularly within the rail industry. As a technology spin-off from the University of Southampton, Perpetuum has established itself as a leader in vibration energy harvesting, providing practical solutions for wireless automation.

Cambridge CMOS Sensors Limited is a semiconductor company based in Cambridge, United Kingdom, founded in 2008 as a spin-off from Cambridge University. The company specializes in developing, manufacturing, and marketing advanced gas sensor solutions for air quality monitoring and breath analysis applications. Its product lineup includes gas sensors, infrared components, and evaluation kits tailored for smartphones, wearables, and smart home devices. Cambridge CMOS Sensors focuses on monitoring hazardous gases and volatile organic compounds (VOCs) and is recognized for its innovative micro hotplate gas-sensor technology, which allows for miniaturization, lower power consumption, and rapid response times. The company serves both consumer and industrial markets, with operations spanning across China, Europe, Japan, Korea, Taiwan, and the United States. As of 2016, it operates as a subsidiary of ams AG.

Mode Diagnostics focuses on creating innovative diagnostic products for bowel cancer screening by utilizing the electrochemical properties of biomarkers. The company has developed a range of technologies that include assay development techniques, biosensing capabilities, microfabrication, electronics, and wireless communications. Its proprietary platform, known as "measure," is designed to be flexible, low-cost, and hygienic, making it suitable for both physician offices and consumer self-testing. Mode Diagnostics aims to provide user-friendly and medically informative health screening solutions, with its flagship product, measure BOWEL HEALTH, offering significant advancements over traditional fecal occult blood testing methods. This product enhances the efficiency of bowel cancer screening for healthcare providers.

YASA was founded on the principle that small, light electric motors would play a growing role in meeting both the strict emissions targets being set globally in a wide range of industries and the requirement for greater efficiency through electrification. The Company was incorporated in 2009 based on a unique patented motor technology invented by the Company’s founder and CTO Dr Tim Woolmer whilst studying for his DPhil at Oxford University. The unique YASA motor technology is ideal for a range of mobile applications such as hydraulics replacement, power generation, traction and propulsion and hybridisation. YASA Motors manufactures a range of standard electric motors and generators based on our unique motor topology at our factory and Company Headquarters in Abingdon, Oxfordshire. The YASA-750, YASA-250 and YASA-400 products have been designed to be integrated into customers’ products in a range of markets and industries with minimal application engineering. In addition to our standard products, YASA has a design and development team dedicated to making bespoke motors for customers for medium-high volume applications.

Mode Diagnostics focuses on creating innovative diagnostic products for bowel cancer screening by utilizing the electrochemical properties of biomarkers. The company has developed a range of technologies that include assay development techniques, biosensing capabilities, microfabrication, electronics, and wireless communications. Its proprietary platform, known as "measure," is designed to be flexible, low-cost, and hygienic, making it suitable for both physician offices and consumer self-testing. Mode Diagnostics aims to provide user-friendly and medically informative health screening solutions, with its flagship product, measure BOWEL HEALTH, offering significant advancements over traditional fecal occult blood testing methods. This product enhances the efficiency of bowel cancer screening for healthcare providers.

Cambridge CMOS Sensors Limited is a semiconductor company based in Cambridge, United Kingdom, founded in 2008 as a spin-off from Cambridge University. The company specializes in developing, manufacturing, and marketing advanced gas sensor solutions for air quality monitoring and breath analysis applications. Its product lineup includes gas sensors, infrared components, and evaluation kits tailored for smartphones, wearables, and smart home devices. Cambridge CMOS Sensors focuses on monitoring hazardous gases and volatile organic compounds (VOCs) and is recognized for its innovative micro hotplate gas-sensor technology, which allows for miniaturization, lower power consumption, and rapid response times. The company serves both consumer and industrial markets, with operations spanning across China, Europe, Japan, Korea, Taiwan, and the United States. As of 2016, it operates as a subsidiary of ams AG.

YASA was founded on the principle that small, light electric motors would play a growing role in meeting both the strict emissions targets being set globally in a wide range of industries and the requirement for greater efficiency through electrification. The Company was incorporated in 2009 based on a unique patented motor technology invented by the Company’s founder and CTO Dr Tim Woolmer whilst studying for his DPhil at Oxford University. The unique YASA motor technology is ideal for a range of mobile applications such as hydraulics replacement, power generation, traction and propulsion and hybridisation. YASA Motors manufactures a range of standard electric motors and generators based on our unique motor topology at our factory and Company Headquarters in Abingdon, Oxfordshire. The YASA-750, YASA-250 and YASA-400 products have been designed to be integrated into customers’ products in a range of markets and industries with minimal application engineering. In addition to our standard products, YASA has a design and development team dedicated to making bespoke motors for customers for medium-high volume applications.