In 2011, Professor George Whitesides of Harvard University helped rewrite the rules of what a machine could be. He developed biologically inspired 'soft robots', in collaboration with Harvard and the Pentagon's Defense Advanced Research Projects Agency (DARPA).
The challenge he undertook was to create a robot that could manoeuvre through a gap less than two centimetres high. While most robotic engineers tried using traditional, rigid robots, Whitesides drew inspiration from nature and living organisms. He created a new class of soft robots, made entirely from compliant, elastomeric polymers. In contrast to robots made from rigid materials, the soft robot’s flexibility enabled it to accomplish the DARPA challenge easily. It was a breakthrough in the field of robotics.
The earliest technological applications to come out of the DARPA collaboration were in the biomedical field. Soft robotics could be used, adaptively and delicately, to manoeuvre around the body during invasive surgery, or safely transport organs and soft tissue without damage. But it was not long before industrial automation would emerge as an application for this groundbreaking technology.
Industries such as e-commerce, advanced manufacturing, and food and agriculture have been under increasing pressure to find automation solutions to handle a declining labour pool, rising customer demand, and, in the case of food, increasingly stringent safety standards. However, the variable and fragile nature of these industries' products has largely excluded them from automation.
While Whitesides’ work spawned an entirely new focus area for academic research and development, in 2013 Soft Robotics Inc. emerged as a pioneering force developing the first and only commercial applications. It advanced this technology into a commercial product that could unlock automation for industrial customers around the world. By leveraging patented material science and AI, Soft Robotics builds automation solutions that can grasp items with the same dexterity as the human hand. It is revolutionizing robotic automation to feed the world, and enable industrial productivity in every market.
Why do we need soft robotics?
Food handling and packaging, primarily in produce and baked items, is a highly manual process. Labour costs represent a significant input into total product cost. Historically, workers in these markets have been sourced through low-cost migrant labour. But in the past few years, we have seen a significant reduction in the availability of labour for produce and other food production markets.
Whether it is reduced migrant labour in Salinas, California, or the impact of Brexit on labour flows to the UK from EU countries, or the newly passed regulatory barriers to ‘backpacker’ labour in Australia, this is a global problem. It is having a direct impact on the cost and supply of food around the world. As labour continues to become more scarce, producers are turning to automation to maintain productivity and, in many cases, the economic viability of their food production businesses.
Traditional robots have been designed to perform a single task extremely efficiently. But when the item or the task changes, which is often the case with food, these traditional machines need to be reintegrated and reprogrammed, which can take hundreds of hours and significant capital investment.
This problem is not just limited to food. With increased demand for consumer goods, and labour constraints in industries such as advanced manufacturing and e-commerce, the need for robots to solve dexterous manipulation is stronger than ever. Even the US government cites "flexible gripping mechanisms that allow for dexterous manipulation of everyday objects" as a "national imperative", in its 2016 Roadmap for Robotics report.
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The majority of today’s robotic solutions are based on hard linkages and vision systems, making it difficult to pick up soft and variable objects such as food, or interact safely with humans. Traditional robotics manufacturers have attempted to mimic the human hand with rigid linkages, sensors and sophisticated vision systems. Soft Robotics’ approach solves this problem through material science, not through higher levels of cost and complexity.
The design for Soft Robotics’ technology was inspired by the octopus - a paradigm shift from the traditional robotics approach. This led to the invention of soft robotic actuators made entirely of polymers that do not require sensors or other electromechanical devices for operation. The computational power of the system is built into the gripper itself, a proprietary blend of materials with microfluidic channels. When actuated, it mimics the tentacles of an octopus to replicate the grasping and gripping capabilities of the human hand.
Today, only 12% of non-automotive industries are automated by robots, because existing, rigid robots are unable to solve for dexterous manipulation of variable product and unstructured tasks. By leveraging the properties of soft and compliant materials, we are able to build a fundamentally new set of adaptive and dexterous robotic hands that open up completely new applications for these labour-starved industries.
Driving the future of food production
Agriculture in the 21st century faces the challenge of producing more food to feed a growing population, with a smaller rural labour force. Over the last century, the global population has quadrupled, according to the UN. This growth, along with increased incomes in developing countries, is driving up global food demand, which is expected to rise by between 59% to 98% by 2050.
This will shape the agriculture and food market in new ways. Farmers will need to increase production yields. But with labour shortages, production has slowed and expansion is difficult. The farm labour shortage accounted for $3 billion in lost annual revenue between 2002 and 2014. California, which produces a third of America’s vegetables and two thirds of its fruit and nuts, has been particularly affected. The state lost nearly 40% of its agricultural workforce between 2002 and 2014, according to the Farm Labor Survey and US Census of Agriculture. Solving for the productivity challenge in agriculture will not only feed the world, but can create jobs, and turn agriculture-based economies into export economies.
The reality of labour scarcity and food safety concerns are having a direct impact on the cost and availability of food globally. Soft Robotics’ technology helps new industries bring automation into their handling and packaging applications. Every human on earth participates in the global food supply chain. We are working to ensure the economic viability of food producers to supply this market.
Soft Robotics Inc. is a member of the World Economic Forum's 2018 class of Technology Pioneers. Explore this year's full cohort of Technology Pioneers here.