Acknowledgments:An earlier version of this paper was the recipient of the 2015 Chris Voss Best Paper Award granted at the 22 nd European Operations Management Association conference. We are most grateful to the EurOMA Scientific Committee for choosing our paper and encouraging us to consider IJPDLM as a publication outlet for our research. We also acknowledge the helpful feedback received at the conference. Moreover, we would like to thank the three anonymous reviewers at IJPDLM who have provided extremely insightful and constructive suggestions which helped us to improve this paper substantially. Finally, we express our gratitude to the Editor, Alexander E. Ellinger, for facilitating a speedy review process. Design/methodology/approach -A dyadic case study design was adopted with a Western European buyer and six of its Chinese suppliers. The database consists of 41 interviews and 81 documents.Findings -Contextual barriers to SDS in global supply chains derive from complexities in the sustainability concept, socio-economic differences, spatial and linguistic distance, as well as cultural differences between buyers and suppliers. Partial remedies include effective joint communications, an open organizational culture, and the fostering of cross-contextual understanding.Research implications -The findings contribute to theory development at the intersection of sustainable and global supply chain management research. They help to explain why scarce sustainability-related progress in global supply chains has occurred in recent years.Practical implications -The identified barriers facilitate managerial decision making that will expedite SDS progress in global contexts.Social implications -By diffusing knowledge regarding available remedies, the study contributes to improving SDS effectiveness, thereby fostering sustainability capabilities and performance of suppliers.Originality/value -This research highlights the criticality of contextual barriers to SDS. The barrier effects that stem from differing real-world conceptions of sustainability may inform future sustainable supply chain management research within and beyond SDS.

Purpose -The purpose of this paper is to explore contextual barriers to supplier development for sustainability (SDS) in global supply chains and managerial remedies to mitigate such barriers. Design/methodology/approach -A dyadic case study design was adopted with a Western European buyer and six of its Chinese suppliers. The database consists of 41 interviews and 81 documents. Findings -Contextual barriers to SDS in global supply chains derive from complexities in the sustainability concept, socio-economic differences, spatial and linguistic distance, as well as cultural differences between buyers and suppliers. Partial remedies include effective joint communications, an open organizational culture, and the fostering of cross-contextual understanding.Research limitations/implications -The findings contribute to theory development at the intersection of sustainable and global supply chain management research. They help to explain why scarce sustainability-related progress in global supply chains has occurred in recent years. Practical implications -The identified barriers facilitate managerial decision making that will expedite SDS progress in global contexts. Social implications -By diffusing knowledge regarding available remedies, the study contributes to improving SDS effectiveness, thereby fostering sustainability capabilities and performance of suppliers. Originality/value -This research highlights the criticality of contextual barriers to SDS. The barrier effects that stem from differing real-world conceptions of sustainability may inform future sustainable supply chain management research within and beyond SDS.

Lab on a chip (LOC) technology is a promising miniaturization approach. The feature that it significantly reduced sample consumption makes great sense in analytical and bioanalytical chemistry. Since the start of LOC technology, much attention has been focused on continuous flow microfluidic systems. At the turn of the century, droplet microfluidics, which was also termed segmented flow microfluidics, was introduced. Droplet microfluidics employs two immiscible phases to form discrete droplets, which are ideal vessels with confined volume, restricted dispersion, limited cross-contamination, and high surface area. Due to these unique features, droplet microfluidics proves to be a versatile tool in microscale sample handling. This article reviews the utility of droplet microfluidics in microanalytical systems with an emphasize on separation science, including sample encapsulation at ultra-small volume, compartmentalization of separation bands, isolation of droplet contents, and related detection techniques.